Note: this is an archived version which has been superseded. The current SNR catalogue is at http://www.mrao.cam.ac.uk/surveys/snrs/

1st quadrant Galactic SNRs (0°<l<45°)

G0.0+0.0     Sgr A East

• Right Ascension: 17 45 44
• Declination: −29 00
• Size (/arcmin): 3.5×2.5
• Type: S
• Flux density at 1 GHz (/Jy): 100?
• Spectral Index: 0.8?

Radio: Non-thermal shell, in complex region, interacting with molecular material to the west.

X-ray: Diffuse emission, centrally peaked.

Point sources: Compact X-ray source.

References:

• Ekers et al. 1983, A&A, 122, 143. VLA at 1.4 GHz and 5 GHz (both 5''×8''), S_1.4 GHz=77 Jy, S_5.0 GHz=31 Jy. ADS
• Pedlar et al. 1989, ApJ, 342, 769. VLA at 332 MHz (12''), 1.4 GHz (1".3×2".5) and 5 GHz (1".3×2".5). ADS
• Mezger et al. 1989, A&A, 209, 337. Nearby molecular material. ADS
• Ho et al. 1991, Nature, 350, 309. VLA of NH₃ emission from surroundings. ADS
• Anantharamaiah et al. 1991, MNRAS, 249, 262. VLA at 330 MHz (17''×33''). ADS
• Serabyn et al. 1992, ApJ, 395, 166. Nearby molecular material. ADS
• Gray 1994, MNRAS, 270, 835. MOST at 843 MHz (43''×88''). ADS
• Yusef-Zadeh & Mehringer 1995, ApJ, 452, L37. VLA of nearby H₂O masers. ADS
• Yusef-Zadeh et al. 1999, ApJ, 512, 230. OH maser observations. ADS
• Coil & Ho 2000, ApJ, 533, 245. NH₃ observations of surroundings. ADS
• LaRosa et al. 2000, AJ, 119, 207. VLA at 333 MHz (24''×43''). ADS
• Fatuzzo et al. 2001, ApJ, 549, 293. Electron–positron lines from the vicinity. ADS
• Yusef-Zadeh et al. 2001, ApJ, 560, 749. Observations of nearby molecular hydrogen. ADS
• Maeda et al. 2002, ApJ, 570, 671. Chandra observations. ADS
• Sakano et al. 2003, AN, 324 (No S1), 197. XMM observations. ADS
• Roy & Rao 2004, MNRAS, 349, L25. GMRT at 620 MHz (6'.6×11'.4). ADS
• Sakano et al. 2004, MNRAS, 350, 129. XMM observations. ADS
• Yusef-Zadeh et al. 2004, ApJS, 155, 421. VLA at 1.4 GHz (1''×2".2). ADS
• Park et al. 2005, ApJ, 631, 964. Chandra observations. ADS
• Aharonian et al. 2006, ApJ, 636, 777. γ-ray detection. ADS
• Koyama et al. 2007, PASJ, 59, S237. Suzaku observations. ADS
• Lee et al. 2008, ApJ, 674, 247. Molecular H₂ observations of surroundings. ADS
• Sjouwerman & Pihlström 2008, ApJ, 681, 1287. VLA at 1.7 GHz of OH masers. ADS
• Hewitt et al. 2008, ApJ, 683, 189. GBT at 1.6 and 1.7 GHz for OH masers. ADS

Last updated: 18 Feb 2009

G0.3+0.0    

• Right Ascension: 17 46 15
• Declination: −28 38
• Size (/arcmin): 15×8
• Type: S
• Flux density at 1 GHz (/Jy): 22
• Spectral Index: 0.6

Notes: Has been called G0.33+0.04 and G0.4+0.1.

Radio: Bilateral shell, near Galactic Centre.

References:

• Kassim & Frail 1996, MNRAS, 283, L51. VLA at 333 MHz (23''×42''), plus review of flux densities and other observations. ADS
• LaRosa et al. 2000, AJ, 119, 207. VLA at 333 MHz (30''). ADS
• Yusef-Zadeh et al. 2004, ApJS, 155, 421. VLA at 1.4 GHz (30''). ADS

Last updated: 31 Mar 2006

G0.9+0.1    

• Right Ascension: 17 47 21
• Declination: −28 09
• Size (/arcmin): 8
• Type: C
• Flux density at 1 GHz (/Jy): 18?
• Spectral Index: varies

Radio: Flat spectrum core within steep spectrum shell.

X-ray: Central core, with non-thermal spectrum.

References:

• Helfand & Becker 1987, ApJ, 314, 203. VLA at 1.4 and 5 GHz, and Einstein observations. ADS
• Gray 1994, MNRAS, 270, 835. MOST at 843 MHz (43''×91''). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Mereghetti et al. 1998, A&A, 331, L77. X-ray detection. ADS
• LaRosa et al. 2000, AJ, 119, 207. VLA at 333 MHz (43''×24''). ADS
• Sidoli et al. 2000, A&A, 361, 719. BeppoSAX observations. ADS
• Gaensler et al. 2001, ApJ, 556, L107. Chandra observations. ADS
• Porquet et al. 2003, A&A, 401, 197. XMM observations. ADS
• Yusef-Zadeh et al. 2004, ApJS, 155, 421. VLA at 1.4 GHz (8".6×11".3). ADS
• Aharonian et al. 2005, A&A, 432, L25. γ-ray detection. ADS
• Dubner et al. 2008, A&A, 487, 1033. ATCA and VLA at 1.4 GHz (1".2×2".5: S=8.3±0.7 Jy), 5 GHz (1".6×2".5) and 8.3 GHz (0".8×1".5). ADS

Last updated: 18 Feb 2009

G1.0−0.1    

• Right Ascension: 17 48 30
• Declination: −28 09
• Size (/arcmin): 8
• Type: S
• Flux density at 1 GHz (/Jy): 15
• Spectral Index: 0.6?

Notes: Has been called G1.05−0.1 and G1.05−0.15.

Radio: Incomplete shell, to the S of Sgr D.

X-ray: Possibly detected.

References:

• Downes et al. 1979, A&AS, 35, 1. Review of flux densities. ADS
• Anantharamaiah et al. 1991, MNRAS, 249, 262. VLA at 330 MHz (64''×100'': S=12.3 Jy). ADS
• Liszt 1992, ApJS, 82, 495. VLA at 1.6 GHz (13''×23''). ADS
• Gray 1994, MNRAS, 270, 835. MOST at 843 MHz (43''×91''). ADS
• Mehringer et al. 1998, ApJ, 493, 274. VLA at 1.6 GHz (15''×28'') and 5 GHz, including masers observations. ADS
• Yusef-Zadeh et al. 1999, ApJ, 527, 172. VLA of nearby OH masers. ADS
• LaRosa et al. 2000, AJ, 119, 207. VLA at 333 MHz (43''×24''). ADS
• Sidoli et al. 2001, A&A, 372, 651. BeppoSAX possible detection. ADS
• Yusef-Zadeh et al. 2004, ApJS, 155, 421. VLA at 1.4 GHz (30''). ADS
• Hewitt et al. 2008, ApJ, 683, 189. GBT at 1.6 and 1.7 GHz for OH masers. ADS

Last updated: 18 Feb 2009

G1.4−0.1    

• Right Ascension: 17 49 39
• Declination: −27 46
• Size (/arcmin): 10
• Type: S
• Flux density at 1 GHz (/Jy): 2?
• Spectral Index: ?

Radio: Shell, brightest in E.

References:

• Gray 1994, MNRAS, 270, 847. MOST at 843 MHz (43''×92'': S=2 Jy). ADS
• Yusef-Zadeh et al. 1999, ApJ, 527, 172. VLA of nearby OH masers. ADS
• Bhatnagar 2002, MNRAS, 332, 1. GMRT at 327 MHz (2'.7×2'.4: S=4.2±0.5). ADS
• Yusef-Zadeh et al. 2004, ApJS, 155, 421. VLA at 1.4 GHz (8".2×12".2). ADS
• Hewitt et al. 2008, ApJ, 683, 189. GBT at 1.6 and 1.7 GHz for OH masers. ADS

Last updated: 18 Feb 2009

G1.9+0.3    

• Right Ascension: 17 48 45
• Declination: −27 10
• Size (/arcmin): 1.5
• Type: S
• Flux density at 1 GHz (/Jy): 0.6
• Spectral Index: 0.6

Radio: Shell, brighter to the N, brightening.

X-ray: Shell, with bright limbs to E and W.

References:

• Green & Gull 1984, Nature, 312, 527. VLA at 5 GHz (4".4×2''). ADS
• Gray 1994, MNRAS, 270, 835. MOST at 843 MHz (43''×94''). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Yusef-Zadeh et al. 2004, ApJS, 155, 421. VLA at 1.4 GHz (8".3×12''). ADS
• Nord et al. 2004, AJ, 128, 1646. VLA at 330 MHz (7''×12''). ADS
• Green 2004, BASI, 32, 335. VLA at 1.5 GHz (7".2×9".4). ADS
• Reynolds et al. 2008, ApJ, 680, L41. Chandra observations. ADS
• Green et al. 2008, MNRAS, 387, L54. VLA at 4.86 GHz (4''×10''), for expansion studies. ADS
• Murphy et al. 2008, MNRAS, 389, L23. MOST at 843 MHz for flux increase. ADS

Last updated: 18 Feb 2009

G3.7−0.2    

• Right Ascension: 17 55 26
• Declination: −25 50
• Size (/arcmin): 14×11
• Type: S
• Flux density at 1 GHz (/Jy): 2.3
• Spectral Index: 0.65

Notes: Has been called G003.8−00.3.

Radio: Double arc.

References:

• Gray 1994, MNRAS, 270, 847. MOST at 843 MHz (43''×99'': S=2.4 Jy). ADS
• Gaensler 1998, ApJ, 493, 781. VLA at 1.4 GHz (9''×15'': S=1.7±0.1 Jy). ADS
• Yusef-Zadeh et al. 2004, ApJS, 155, 421. VLA at 1.4 GHz (8".4×11".4). ADS

Last updated: 31 Mar 2006

G3.8+0.3    

• Right Ascension: 17 52 55
• Declination: −25 28
• Size (/arcmin): 18
• Type: S?
• Flux density at 1 GHz (/Jy): 3?
• Spectral Index: 0.6

Radio: Incomplete shell.

References:

• Gray 1994, MNRAS, 270, 847. MOST at 843 MHz (43''×100'': S=3.5 Jy). ADS
• Bhatnagar 2002, MNRAS, 332, 1. GMRT at 327 MHz (27''×17'': S=6.0±0.4). ADS

Last updated: 11 Jan 2004

G4.2−3.5    

• Right Ascension: 18 08 55
• Declination: −27 03
• Size (/arcmin): 28
• Type: S
• Flux density at 1 GHz (/Jy): 3.2?
• Spectral Index: 0.6?

Radio: Elongated shell.

References:

• Reich et al. 1988, in SNRISM, p293. Summary of parameters. ADS
• Reich et al. 1990, A&AS, 85, 633. Effelsberg 100-m at 2.7 GHz (4'.3). ADS

Last updated: 19th May 1992

G4.5+6.8     Kepler, SN1604, 3C358

• Right Ascension: 17 30 42
• Declination: −21 29
• Size (/arcmin): 3
• Type: S
• Flux density at 1 GHz (/Jy): 19
• Spectral Index: 0.64

Notes: This is the remnant of Kepler's SN of AD1604.

Radio: Incomplete shell, brighter to the N.

Optical: Faint filaments.

X-ray: Shell, brighter to the N.

Distance: Optical expansion and proper motion indicates about 2.9 kpc, HI observations suggest 3.4 to 6.4 kpc.

References:

• van den Bergh & Kamper 1977, ApJ, 218, 617. Optical proper motions. ADS
• Leibowitz & Danziger 1983, MNRAS, 204, 273. Optical spectra. ADS
• White & Long 1983, ApJ, 264, 196. Einstein observations. ADS
• Matsui et al. 1984, ApJ, 287, 295. VLA at 1.4 (2".5×3".2) and 5 GHz (3".2×4".8) and Einstein image (5''). ADS
• Dickel et al. 1988, ApJ, 330, 254. VLA at 1.4 (1".2×2".3) and 5 GHz (0".6×1".0) at two epochs. ADS
• Smith et al. 1989, ApJ, 347, 925. EXOSAT observations. ADS
• Hatsukade et al. 1990, PASJ, 42, 279. X-ray spectrum. ADS
• Blair et al. 1991, ApJ, 366, 484. Optical imaging and spectroscopy. ADS
• Bandiera & van den Bergh 1991, ApJ, 374, 186. Optical changes. ADS
• van den Bergh 1991, PASP, 103, 194. Optical imaging. ADS
• Predehl & Schmitt 1995, A&A, 293, 889. ROSAT of dust scattered halo. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Hughes 1999, ApJ, 527, 298. ROSAT and Einstein image comparison for expansion studies. ADS
• Reynoso & Goss 1999, AJ, 118, 926. VLA at 1.4 GHz (23''×13'') for HI studies. ADS
• Kinugasa & Tsunemi 1999, PASJ, 51, 239. ASCA observations. ADS
• Gerardy & Fesen 2001, AJ, 121, 2781. IR spectroscopy and imaging. ADS
• DeLaney et al. 2002, ApJ, 580, 914. VLA at 1.3 to 1.5 GHz and 5 GHz (7".2) for spectral index studies. ADS
• Morgan et al. 2003, ApJ, 597, L33. Sub-mm dust observations. ADS
• Sollerman et al. 2003, A&A, 407, 249. Optical spectroscopy. ADS
• Cassam-Chenaï et al. 2004, A&A, 414, 545. XMM observations. ADS
• Bamba et al. 2005, ApJ, 621, 793. Chandra observations of rim. ADS
• Riesgo & López 2005, RMxAA, 41, 57. Optical observations of filament (previously classified as PN, H 2-12). ADS
• Blair et al. 2007, ApJ, 662, 998. Spitzer IR observations. ADS
• Reynolds et al. 2007, ApJ, 668, L135. Chandra observations. ADS
• Sankrit et al. 2008, AJ, 135, 538. HST observations. ADS
• Aharonian et al. 2008, A&A, 488, 219. γ-ray upper limit. ADS
• Enomoto et al. 2008, ApJ, 683, 383. γ-ray upper limit. ADS
• Katsuda et al. 2008, ApJ, 689, 225. Chandra proper motion studies. ADS
• Vink et al. 2008, ApJ, 689, 231. Chandra proper motion studies. ADS

Last updated: 18 Feb 2009

G4.8+6.2    

• Right Ascension: 17 33 25
• Declination: −21 34
• Size (/arcmin): 18
• Type: S
• Flux density at 1 GHz (/Jy): 3
• Spectral Index: 0.6

Notes: Has been called G4.5+6.2.

Radio: Faint shell.

References:

• Bhatnagar 2000, MNRAS, 317, 453. GMRT at 327 MHz (2'.2×1'.3: S=5.5±1.2 Jy), and NVSS at 1.4 GHz. ADS

Last updated: 12 Oct 2001

G5.2−2.6    

• Right Ascension: 18 07 30
• Declination: −25 45
• Size (/arcmin): 18
• Type: S
• Flux density at 1 GHz (/Jy): 2.6?
• Spectral Index: 0.6?

Radio: Poorly resolved shell.

References:

• Reich et al. 1988, in SNRISM, p293. Summary of parameters. ADS
• Reich et al. 1990, A&AS, 85, 633. Effelsberg 100-m at 2.7 GHz (4'.3). ADS

Last updated: 19th May 1992

G5.4−1.2     Milne 56

• Right Ascension: 18 02 10
• Declination: −24 54
• Size (/arcmin): 35
• Type: C?
• Flux density at 1 GHz (/Jy): 35?
• Spectral Index: 0.2?

Notes: Part been called G5.3−1.0. Has been suggested that this is not a SNR.

Radio: Incomplete shell, including wide `v' of emission to east with small flat-spectrum source at apex.

Optical: Detected.

X-ray: Pulsar detected, with faint extension.

Distance: HI absorption suggests >4.3 kpc.

Point sources: Pulsar nearby, in flat spectrum source.

References:

• Clark et al. 1975, AuJPA, 37, 75. Molonglo at 408 MHz (3': S=38 Jy). ADS
• Becker & Kundu 1975, AJ, 80, 679. NRAO 140-ft at 10.6 GHz (3'). ADS
• Dickel & Milne 1976, AuJPh, 29, 435. Comparison of earlier Parkes 64-m maps at 2.7 GHz (8'.4) and 5 GHz (4'.4). ADS
• Angerhofer et al. 1977, A&A, 55, 11. NRAO 140-ft at 5 GHz (6'.8: S=21.9±2.4 Jy). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Zealey et al. 1979, A&AS, 38, 39. Optical detection. ADS
• Becker & Helfand 1985, Nature, 313, 115. VLA at 1.4 and 5 GHz. ADS
• Helfand & Becker 1985, Nature, 313, 118. Suggesting it is not a SNR. ADS
• Manchester et al. 1985, MNRAS, 212, 975. Pulsar detection. ADS
• Caswell et al. 1987, MNRAS, 225, 329. MOST at 843 MHz (42''×110''). ADS
• Frail & Kulkarni 1991, Nature, 352, 785. Pulsar and remnant association. ADS
• Manchester et al. 1991, MNRAS, 253, 7P. Pulsar and remnant association. ADS
• Milne et al. 1992, MNRAS, 255, 707. Parkes 64-m at 4.75 (4'.5: S=30.8±2.1 Jy) and 8.4 GHz (3': S=24±3 Jy), including polarisation. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.0×4'.9: S=38 Jy). ADS
• Frail et al. 1994, AJ, 107, 1120. VLA at 327 MHz (68''×73''), plus HI absorption. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Gaensler & Frail 2000, Nature, 406, 158. Pulsar observations, including proper motion. ADS
• Kaspi et al. 2001, ApJ, 562, L163. X-ray detection of pulsar, and upper limit for remnant. ADS
• Reich 2002, in NSPS, p1. Effelsberg 100-m at 10.6 GHz, including polarisation. ADS
• Blazek et al. 2006, ApJ, 652, 1523. Proper motion study of pulsar. ADS
• Zeiger et al. 2008, ApJ, 674, 271. Proper motion study of pulsar. ADS

Last updated: 18 Feb 2009

G5.5+0.3    

• Right Ascension: 17 57 04
• Declination: −24 00
• Size (/arcmin): 15×12
• Type: S
• Flux density at 1 GHz (/Jy): 5.5
• Spectral Index: 0.7

Notes: Has been called G5.55+0.32.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=14.3±0.3 Jy), plus other observations. ADS

Last updated: 2006 March 29

G5.9+3.1    

• Right Ascension: 17 47 20
• Declination: −22 16
• Size (/arcmin): 20
• Type: S
• Flux density at 1 GHz (/Jy): 3.3?
• Spectral Index: 0.4?

Radio: Asymmetric shell.

References:

• Reich et al. 1988, in SNRISM, p293. Effelsberg 100-m at 2.7 GHz (4'.3). ADS

Last updated: 19th May 1992

G6.1+0.5    

• Right Ascension: 17 57 29
• Declination: −23 25
• Size (/arcmin): 18×12
• Type: S
• Flux density at 1 GHz (/Jy): 4.5
• Spectral Index: 0.9

Notes: Has been called G6.10+0.53.

Radio: Partial shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=13.4±0.2 Jy), plus other observations. ADS

Last updated: 2006 March 29

G6.1+1.2    

• Right Ascension: 17 54 55
• Declination: −23 05
• Size (/arcmin): 30×26
• Type: F
• Flux density at 1 GHz (/Jy): 4.0?
• Spectral Index: 0.3?

Notes: Has been called G6.1+1.15.

Radio: Faint, diffuse emission.

References:

• Reich et al. 1988, in SNRISM, p293. Summary of parameters. ADS
• Reich et al. 1990, A&AS, 85, 633. Effelsberg 100-m at 2.7 GHz (4'.3). ADS

Last updated: 28 Jun 1995

G6.4−0.1     W28

• Right Ascension: 18 00 30
• Declination: −23 26
• Size (/arcmin): 48
• Type: C
• Flux density at 1 GHz (/Jy): 310
• Spectral Index: varies

Notes: Has been called G6.6−0.2.

Radio: Several non-thermal sources in a ring, with flat spectrum core.

Optical: Diffuse emission.

X-ray: Diffuse emission from most of the remnant.

Point sources: Young pulsar near edge of remnant, but not thought to be related.

Distance: HI observations suggest 1.9 kpc.

References:

• Kundu & Velusamy 1972, A&A, 20, 237. NRAO 140-ft at 10 GHz (3'). ADS
• van den Bergh et al. 1973, ApJS, 26, 19. Optical observations. ADS
• Dickel & Milne 1976, AuJPh, 29, 435. Comparison of earlier Parkes 64-m maps at 2.7 GHz (8'.4) and 5 GHz (4'.4). ADS
• Dopita et al. 1977, ApJ, 214, 179. Some optical line ratios. ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Lozinskaya 1981, SvAL, 7, 17. Mean optical velocity. ADS
• Andrews et al. 1983, ApJ, 266, 684. VLA at 1.4 GHz (8'') 4.9 GHz (3'') and 15 GHz (1'') of central region only, plus Einstein image of central region. ADS
• Bohigas et al. 1983, RMxAA, 8, 155. Optical spectra. ADS
• Odenwald et al. 1984, ApJ, 279, 162. Nearby IR source. ADS
• Andrews et al. 1985, AJ, 90, 310. VLA of central component. ADS
• Long et al. 1991, ApJ, 373, 567. Einstein and optical observations. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.1×4'.4: S=660 Jy). ADS
• Kaspi et al. 1993, ApJ, 409, L57. Pulsar association. ADS
• Frail et al. 1993, Nature, 365, 136. VLA at 327 MHz (smoothed to 65''), plus pulsar association. ADS
• Frail et al. 1994, ApJ, 424, L111. VLA of associated OH masers. ADS
• Esposito et al. 1996, ApJ, 461, 820. Possible associated γ-ray emission. ADS
• Frail et al. 1996, AJ, 111, 1651. OH maser emission. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Claussen et al. 1997, ApJ, 489, 143. VLA of OH masers. ADS
• Claussen et al. 1999, ApJ, 522, 349. High resolution observations of OH masers. ADS
• Arikawa et al. 1999, PASJ, 51, L7. Observations of shocked CO. ADS
• Yusef-Zadeh et al. 2000, ApJ, 540, 842. VLA at 327 MHz (2'.6×5'.5) and 1.48 GHz (40''×65''). ADS
• Dubner et al. 2000, AJ, 120, 1933. VLA at 328 MHz (97''×52'': S=425±40 Jy) and 1415 MHz (88''×48'': S=246±20 Jy), and comparison with other observations. ADS
• Reach & Rho 2000, ApJ, 544, 843. ISO observations of interactions with surroundings. ADS
• Rowell et al. 2000, A&A, 359, 337. Upper limit on high energy γ-rays. ADS
• Douvion et al. 2001, A&A, 373, 281. ISO observations. ADS
• Roberts et al. 2001, ApJS, 133, 451. ASCA observations. ADS
• Velõzquez et al. 2002, AJ, 124, 2145. Parkes 64-m at 1.4 GHz (15') for HI. ADS
• Rho & Borkowski 2002, ApJ, 575, 201. ROSAT and ASCA observations. ADS
• Claussen et al. 2002, ApJ, 580, 909. Observations of nearby source. ADS
• Yusef-Zadeh et al. 2003, ApJ, 583, 267. OH observations. ADS
• Caswell 2004, MNRAS, 349, 99. ATCA at 1.7 GHz of associated OH masers. ADS
• Mavromatakis et al. 2004, A&A, 426, 567. Optical observations. ADS
• Reach et al. 2005, ApJ, 618, 297. Molecular lines and near IR observations. ADS
• Hoffman et al. 2005, ApJ, 620, 257. OH maser observations. ADS
• Kawasaki et al. 2005, ApJ, 631, 935. ASCA observations. ADS
• Neufeld et al. 2007, ApJ, 664, 890. Spitzer IR observations. ADS
• Aharonian et al. 2008, A&A, 481, 401. γ-ray observations. ADS
• Casandjian & Grenier 2008, A&A, 489, 849. γ-ray observations. ADS
• Hewitt et al. 2008, ApJ, 683, 189. GBT at 1.6 and 1.7 GHz for OH masers. ADS

Last updated: 18 Feb 2009

G6.4+4.0    

• Right Ascension: 17 45 10
• Declination: −21 22
• Size (/arcmin): 31
• Type: S
• Flux density at 1 GHz (/Jy): 1.3?
• Spectral Index: 0.4?

Radio: Faint asymmetric shell.

References:

• Reich et al. 1988, in SNRISM, p293. Effelsberg 100-m at 2.7 GHz (4'.3). ADS

Last updated: 19th May 1992

G6.5−0.4    

• Right Ascension: 18 02 11
• Declination: −23 34
• Size (/arcmin): 18
• Type: S
• Flux density at 1 GHz (/Jy): 27
• Spectral Index: 0.6

Notes: Has been called G6.51−0.48, and part has been called G6.67−0.42.

Radio: Shell.

References:

• Yusef-Zadeh et al. 2000, ApJ, 540, 842. VLA at 330 MHz (2'.6×5'.5) and 1.4 GHz (0'.7×1'.1). ADS
• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=60.8±0.4 Jy), plus other observations. ADS
• Casandjian & Grenier 2008, A&A, 489, 849. γ-ray observations. ADS

Last updated: 18 Feb 2009

G7.0−0.1    

• Right Ascension: 18 01 50
• Declination: −22 54
• Size (/arcmin): 15
• Type: S
• Flux density at 1 GHz (/Jy): 2.5?
• Spectral Index: 0.5?

Notes: Has been called G7.06−0.12.

Radio: Double rim, brightest in W, confused by bright HII region M20 in SE.

References:

• Yusef-Zadeh et al. 2000, ApJ, 540, 842. VLA at 327 MHz (2'.6×5'.5) and 1.48 GHz (40''×65''). ADS
• Dubner et al. 2000, AJ, 120, 1933. VLA at 328 MHz (97''×52'') and 1415 MHz (88''×48''). ADS

Last updated: 10th October 2001

G7.2+0.2    

• Right Ascension: 18 01 07
• Declination: −22 38
• Size (/arcmin): 12
• Type: S
• Flux density at 1 GHz (/Jy): 2.8
• Spectral Index: 0.6

Notes: Has been called G7.20+0.20.

Radio: Partial shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=5.2±0.2 Jy), plus other observations. ADS

Last updated: 2006 March 29

G7.7−3.7     1814−24

• Right Ascension: 18 17 25
• Declination: −24 04
• Size (/arcmin): 22
• Type: S
• Flux density at 1 GHz (/Jy): 11
• Spectral Index: 0.32

Radio: Shell, with high polarisation.

References:

• Dickel & Milne 1976, AuJPh, 29, 435. Comparison of earlier Parkes 64-m maps at 2.7 GHz (8'.4) and 5 GHz (4'.4). ADS
• Milne et al. 1986, MNRAS, 223, 487. MOST at 843 MHz (44''×108'') and Parkes 64-m at 8.4 GHz (3': S=4.6±0.5 Jy), with polarisation, plus review of flux densities. ADS
• Dubner et al. 1996, AJ, 111, 1304. VLA at 1.4 GHz (70''×35'': S=9.9±0.1 Jy), including polarisation. ADS

Last updated: 20 Aug 1996

G8.3−0.0    

• Right Ascension: 18 04 34
• Declination: −21 49
• Size (/arcmin): 5×4
• Type: S
• Flux density at 1 GHz (/Jy): 1.2
• Spectral Index: 0.6

Notes: Has been called G8.31−0.09.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=2.3±0.1 Jy), plus other observations. ADS
• Higashi et al. 2008, ApJ, 683, 957. γ-ray detection. ADS

Last updated: 18 Feb 2009

G8.7−5.0    

• Right Ascension: 18 24 10
• Declination: −23 48
• Size (/arcmin): 26
• Type: S
• Flux density at 1 GHz (/Jy): 4.4
• Spectral Index: 0.3

Radio: Asymmetric shell.

References:

• Reich et al. 1988, in SNRISM, p293. Summary of parameters. ADS
• Reich et al. 1990, A&AS, 85, 633. Effelsberg 100-m at 2.7 GHz (4'.3). ADS

Last updated: 19th May 1992

G8.7−0.1     (W30)

• Right Ascension: 18 05 30
• Declination: −21 26
• Size (/arcmin): 45
• Type: S?
• Flux density at 1 GHz (/Jy): 80
• Spectral Index: 0.5

Notes: Has been called G8.6−0.1.

Radio: Clumpy non-thermal shell, with low-frequency turnover.

X-ray: Northern edge detected.

Point sources: Pulsar inside western edge.

References:

• Odegard 1986, AJ, 92, 1372. TPT at 57.5 MHz (7'.2×9'.7: S=190±50 Jy). ADS
• Kassim & Weiler 1990, Nature, 343, 146. VLA at 327 MHz (3'.0×3'.7). ADS
• Kassim & Weiler 1990, ApJ, 360, 184. VLA at 327 MHz (2'.8×4'.1: S=129±11 Jy), and part at 1.4 GHz (0'.9×1'.8), plus review of flux densities. ADS
• Frail et al. 1994, AJ, 107, 1120. VLA at 327 MHz (37''×55''). ADS
• Finley & Ögelman 1994, ApJ, 434, L25. ROSAT observations, including pulsar. ADS
• Aharonian et al. 2005, Science, 307, 1938. γ-ray detection. ADS
• Aharonian et al. 2006, ApJ, 636, 777. γ-ray observations. ADS
• Landi et al. 2006, ApJ, 651, 190. X-ray observations. ADS
• Briskin et al. 2006, ApJ, 652, 554. Pulsar proper motion. ADS

Last updated: 16 Mar 2009

G8.9+0.4    

• Right Ascension: 18 03 58
• Declination: −21 03
• Size (/arcmin): 24
• Type: S
• Flux density at 1 GHz (/Jy): 9
• Spectral Index: 0.6

Notes: Has been called G8.90+0.40.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=18.2±0.5 Jy), plus other observations. ADS

Last updated: 2006 March 29

G9.7−0.0    

• Right Ascension: 18 07 22
• Declination: −20 35
• Size (/arcmin): 15×11
• Type: S
• Flux density at 1 GHz (/Jy): 3.7
• Spectral Index: 0.6

Notes: Has been called G9.7−0.1 and G9.70−0.06.

Radio: Shell.

References:

• Frail et al. 1994, AJ, 107, 1120. VLA at 327 MHz. ADS
• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=6.5±0.2 Jy), plus other observations. ADS

Last updated: 2006 March 29

G9.8+0.6    

• Right Ascension: 18 05 08
• Declination: −20 14
• Size (/arcmin): 12
• Type: S
• Flux density at 1 GHz (/Jy): 3.9
• Spectral Index: 0.5

Radio: Asymmetric shell.

References:

• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Caswell 1983, MNRAS, 204, 833. Molonglo at 408 MHz (3': S=5.8±0.6 Jy). ADS
• Dubner et al. 1993, AJ, 105, 2251. VLA at 1.47 GHz (41''×63'': S=3.5±0.4 Jy). ADS
• Frail et al. 1994, AJ, 107, 1120. VLA at 327 MHz. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS

Last updated: 13 Aug 1998

G9.9−0.8    

• Right Ascension: 18 10 41
• Declination: −20 43
• Size (/arcmin): 12
• Type: S
• Flux density at 1 GHz (/Jy): 6.7
• Spectral Index: 0.4

Notes: Has been called G9.95−0.81.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=11.0±0.3 Jy), plus other observations. ADS

Last updated: 2006 March 29

G10.5−0.0    

• Right Ascension: 18 09 08
• Declination: −19 47
• Size (/arcmin): 6
• Type: S
• Flux density at 1 GHz (/Jy): 0.9
• Spectral Index: 0.6

Notes: Has been called G10.59−0.04.

Radio: Partial shell.

X-ray: Detected.

References:

• Sugizaki et al. 2001, ApJS, 134, 77. ASCA observations. ADS
• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=1.4±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G11.0−0.0    

• Right Ascension: 18 10 04
• Declination: −19 25
• Size (/arcmin): 11×9
• Type: S
• Flux density at 1 GHz (/Jy): 1.3
• Spectral Index: 0.6

Notes: Has been called G11.0+0.0 and G11.03−0.05.

Radio: Partial shell.

X-ray: Diffuse emission.

References:

• Bamba et al. 2003, ApJ, 589, 253. ASCA observations. ADS
• Brogan et al. 2004, AJ, 127, 355. VLA at 330 MHz (25''), 1.5 GHz (25''), and 74 MHz. ADS
• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=3.1±0.2 Jy), plus other observations. ADS

Last updated: 2006 March 29

G11.1−1.0    

• Right Ascension: 18 14 03
• Declination: −19 46
• Size (/arcmin): 18×12
• Type: S
• Flux density at 1 GHz (/Jy): 5.8
• Spectral Index: 0.6

Notes: Has been called G11.2−1.1 and G11.17−1.04.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=11.0±0.3 Jy), plus other observations. ADS

Last updated: 2006 March 29

G11.1−0.7    

• Right Ascension: 18 12 46
• Declination: −19 38
• Size (/arcmin): 11×7
• Type: S
• Flux density at 1 GHz (/Jy): 1.0
• Spectral Index: 0.7

Notes: Has been called G11.15−0.71.

Radio: Partial shell.

References:

• Brogan et al. 2004, AJ, 127, 355. VLA at 330 MHz (25''), 1.5 GHz (25''), and 74 MHz. ADS
• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=2.3±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G11.1+0.1    

• Right Ascension: 18 09 47
• Declination: −19 12
• Size (/arcmin): 12×10
• Type: S
• Flux density at 1 GHz (/Jy): 2.3
• Spectral Index: 0.4

Notes: Has been called G11.18+0.11.

Radio: Shell.

References:

• Brogan et al. 2004, AJ, 127, 355. VLA at 330 MHz (25''), 1.5 GHz (25''), and 74 MHz. ADS
• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=3.5±0.2 Jy), plus other observations. ADS

Last updated: 2006 March 29

G11.2−0.3    

• Right Ascension: 18 11 27
• Declination: −19 25
• Size (/arcmin): 4
• Type: C
• Flux density at 1 GHz (/Jy): 22
• Spectral Index: 0.6

Notes: Probably associated with the SN of AD386.

Radio: Symmetrical clumpy shell, with flatter spectrum core.

X-ray: Shell, with hard spectrum centrally brightened region around pulsar.

Point sources: Central pulsar.

Distance: HI absorption indicates 4.4 kpc.

References:

• Shaver & Goss 1970, AuJPA, 14, 133. Molonglo at 408 MHz (3') and Parkes 64-m at 5 GHz (4'). ADS
• Radhakrishnan et al. 1972, ApJS, 24, 49. HI absorption. ADS
• Becker & Kundu 1975, AJ, 80, 679. NRAO 140-ft at 10.6 GHz (3'). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Downes 1984, MNRAS, 210, 845. VLA at 1465 MHz (20''×25'') and Einstein observations, with review of flux densities. ADS
• Becker et al. 1985, ApJ, 296, 461. VLA at 1.4 and 5 GHz, plus HI absorption, Einstein observations. ADS
• Morsi & Reich 1987, A&AS, 71, 189. Effelsberg 100-m at 32 GHz (26".5: S=4.04±0.24 Jy). ADS
• Green et al. 1988, MNRAS, 231, 735. VLA at 1.4 and 5 GHz. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.2×4'.1: S=39 Jy). ADS
• Reynolds et al. 1994, MNRAS, 271, L1. ROSAT image and spectra. ADS
• Vasisht et al. 1996, ApJ, 456, L59. ASCA observations. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Torii et al. 1997, ApJ, 489, L145. ASCA detection of pulsar. ADS
• Torii et al. 1999, ApJ, 523, L69. X-ray timing observations of pulsar. ADS
• Kothes & Reich 2001, A&A, 372, 627. Effelsberg 100-m at 4.25, 10.45, 14.9 and 32 GHz (2'.5, 1'.1, 0'.86, 0'.45: S=9.6±0.5, 6.3±0.4, 5.7±0.4, 3.8±0.4). ADS
• Kaspi et al. 2001, ApJ, 560, 371. Chandra observations. ADS
• Tam et al. 2002, ApJ, 572, 202. VLA at 1.4/1.5 GHz (2".6×1".8: S=16.6±0.9 Jy) and 5 GHz (2".1×1".5: S=8.4±0.9 Jy) for spectral studies. ADS
• Reich 2002, in NSPS, p1. Effelsberg 100-m at 14.7 GHz. ADS
• Tam & Roberts 2003, ApJ, 598, L27. Multi-epoch VLA observations at 1.4/1.5 GHz and 5 GHz, for expansion studies. ADS
• Roberts et al. 2003, ApJ, 588, 992. Chandra observations. ADS
• Brogan et al. 2004, AJ, 127, 355. VLA at 330 MHz (25''), 1.5 GHz (25''), and 74 MHz. ADS
• Bock & Gaensler 2005, ApJ, 626, 343. BIMA at 88.6 GHz (18''). ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer observations. ADS
• Kaplan & Moon 2006, ApJ, 644, 1056. IR upper limit for pulsar. ADS
• Koo et al. 2007, ApJ, 657, 308. IR observations. ADS
• Dean et al. 2008, MNRAS, 384, L29. Integral observations of pulsar and nebula. ADS

Last updated: 16 Mar 2009

G11.4−0.1    

• Right Ascension: 18 10 47
• Declination: −19 05
• Size (/arcmin): 8
• Type: S?
• Flux density at 1 GHz (/Jy): 6
• Spectral Index: 0.5

Radio: Incomplete shell, possibly with central core.

References:

• Clark et al. 1975, AuJPA, 37, 1. Molonglo at 408 MHz (3': S=9.4 Jy) contaminated by sidelobes of a nearby source, and Parkes 64-m at 5 GHz (4': S=2.8 Jy). ADS
• Angerhofer et al. 1977, A&A, 55, 11. NRAO 140-ft at 5 GHz (6'.8: S=2.0±0.4 Jy). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.2×4'.1: S=18 Jy). ADS
• Dubner et al. 1993, AJ, 105, 2251. VLA at 1.47 GHz (44''×63'': S=5.1±0.6 Jy). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Brogan et al. 2004, AJ, 127, 355. VLA at 330 MHz (25''), 1.5 GHz (25''), and 74 MHz. ADS

Last updated: 18 Apr 2006

G11.8−0.2    

• Right Ascension: 18 12 25
• Declination: −18 44
• Size (/arcmin): 4
• Type: S
• Flux density at 1 GHz (/Jy): 0.7
• Spectral Index: 0.3

Notes: Has been called G11.89−0.21.

Radio: Shell.

X-ray: Detected.

References:

• Sugizaki et al. 2001, ApJS, 134, 77. ASCA observations. ADS
• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=0.9±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G12.0−0.1    

• Right Ascension: 18 12 11
• Declination: −18 37
• Size (/arcmin): 7?
• Type: ?
• Flux density at 1 GHz (/Jy): 3.5
• Spectral Index: 0.7

Radio: Incomplete shell, defined in E only.

X-ray: Detected.

References:

• Clark et al. 1975, AuJPA, 37, 1. Molonglo at 408 MHz (3': S=6.6 Jy) and Parkes 64-m at 5 GHz (4': S=1.1 Jy). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.2×4'.1). ADS
• Dubner et al. 1993, AJ, 105, 2251. VLA at 1.47 GHz (41''×61'': S=0.7 Jy). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Sugizaki et al. 2001, ApJS, 134, 77. ASCA survey observations. ADS

Last updated: 10 Oct 2001

G12.2+0.3    

• Right Ascension: 18 11 17
• Declination: −18 10
• Size (/arcmin): 6×5
• Type: S
• Flux density at 1 GHz (/Jy): 0.8
• Spectral Index: 0.7

Notes: Has been called G12.26+0.30.

Radio: Partial shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=1.5±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G12.5+0.2    

• Right Ascension: 18 12 14
• Declination: −17 55
• Size (/arcmin): 6×5
• Type: C?
• Flux density at 1 GHz (/Jy): 0.6
• Spectral Index: 0.4

Notes: Has been called G12.58+0.22.

Radio: Diffuse, central brightened.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=0.8±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G12.7−0.0    

• Right Ascension: 18 13 19
• Declination: −17 54
• Size (/arcmin): 6
• Type: S
• Flux density at 1 GHz (/Jy): 0.8
• Spectral Index: 0.8

Notes: Has been called G12.72−0.00.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=2.0±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G12.8−0.0    

• Right Ascension: 18 13 37
• Declination: −17 49
• Size (/arcmin): 3
• Type: C?
• Flux density at 1 GHz (/Jy): 0.8
• Spectral Index: 0.5

Notes: Has been called G12.82−0.02 and G12.83−0.02.

Radio: Shell.

X-ray: Diffuse, with central source.

References:

• Sugizaki et al. 2001, ApJS, 134, 77. ASCA observations. ADS
• Brogan et al. 2005, ApJ, 629, L105. VLA at 330 MHz (19''×32''), plus other observations. ADS
• Ubertini et al. 2005, ApJ, 629, L109. X-ray, γ-ray and other observations. ADS
• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=1.2±0.1 Jy), plus other observations. ADS
• Aharonian et al. 2006, ApJ, 636, 777. γ-ray detection. ADS
• Albert et al. 2006, ApJ, 637, L41. γ-ray observations. ADS
• Landi et al. 2006, ApJ, 651, 190. X-ray observations. ADS
• Funk et al. 2007, A&A, 470, 249. XMM observations, CO observations of surroundings. ADS
• Helfand et al. 2007, ApJ, 665, 1297. Chandra observations. ADS

Last updated: 16 Mar 2009

G13.3−1.3    

• Right Ascension: 18 19 20
• Declination: −18 00
• Size (/arcmin): 70×40
• Type: S?
• Flux density at 1 GHz (/Jy): ?
• Spectral Index: ?

Radio: Amorphous emission.

X-ray: Elongated emission.

Optical: Filaments in S.

Distance: Absorption indicates 2–4 kpc.

References:

• Seward et al. 1995, ApJ, 449, 681. ROSAT detection, optical studies and observations of CO. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Koralesky et al. 1998, AJ, 116, 1323. VLA search for OH emission. ADS

Last updated: 1 Aug 2000

G13.5+0.2    

• Right Ascension: 18 14 14
• Declination: −17 12
• Size (/arcmin): 5×4
• Type: S
• Flux density at 1 GHz (/Jy): 3.5?
• Spectral Index: 1.0?

Notes: Has been called G13.46+0.16.

Radio: Elongated, incomplete shell.

References:

• Helfand et al. 1989, ApJ, 341, 151. VLA at 5 GHz (S=0.65±0.05 Jy) and 1.4 GHz (15'': S=2.67±0.5 Jy). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS

Last updated: 13 Aug 1998

G14.1−0.1    

• Right Ascension: 18 15 52
• Declination: −16 34
• Size (/arcmin): 6×5
• Type: S
• Flux density at 1 GHz (/Jy): 0.5
• Spectral Index: 0.6

Notes: Has been called G14.18−0.12.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=0.9±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G14.3+0.1    

• Right Ascension: 18 15 58
• Declination: −16 27
• Size (/arcmin): 5×4
• Type: S
• Flux density at 1 GHz (/Jy): 0.6
• Spectral Index: 0.4

Notes: Has been called G14.30+0.14.

Radio: Partial shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=1.2±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G15.1−1.6    

• Right Ascension: 18 24 00
• Declination: −16 34
• Size (/arcmin): 30×24
• Type: S
• Flux density at 1 GHz (/Jy): 5.5?
• Spectral Index: 0.8?

Radio: Elongated, incomplete shell.

Optical: Diffuse shell.

References:

• Reich et al. 1988, in SNRISM, p293. Summary of parameters. ADS
• Reich et al. 1990, A&AS, 85, 633. Effelsberg 100-m at 2.7 GHz (4'.3). ADS
• Boumis et al. 2008, A&A, 481, 705. Optical detection. ADS

Last updated: 18 Feb 2009

G15.4+0.1    

• Right Ascension: 18 18 02
• Declination: −15 27
• Size (/arcmin): 15×14
• Type: S
• Flux density at 1 GHz (/Jy): 5.6
• Spectral Index: 0.6

Notes: Has been called G15.42+0.18.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=10.9±0.3 Jy), plus other observations. ADS

Last updated: 2006 March 29

G15.9+0.2    

• Right Ascension: 18 18 52
• Declination: −15 02
• Size (/arcmin): 7×5
• Type: S?
• Flux density at 1 GHz (/Jy): 5
• Spectral Index: 0.6?

Radio: Incomplete shell, with bright concentration to the E.

X-ray: Shell, brighter to S and E.

References:

• Clark et al. 1975, AuJPA, 37, 1. Molonglo at 408 MHz (3': S=7.7 Jy) and Parkes 64-m at 5 GHz (4': S=1.9 Jy). ADS
• Angerhofer et al. 1977, A&A, 55, 11. NRAO 140-ft at 5 GHz (6'.8: S=1.1±0.2 Jy). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Caswell et al. 1982, MNRAS, 200, 1143. FIRST at 1415 MHz (58''×44''). ADS
• Dubner et al. 1996, AJ, 111, 1304. VLA at 330 MHz (77''×61'': S=11.2±1.0 Jy), 1.4 GHz (23''×14'': S=3.9±0.1 Jy) and 4.9 GHz (13''×16''). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Reynolds et al. 2006, ApJ, 652, L45. Chandra observations. ADS

Last updated: 18 Feb 2009

G16.0−0.5    

• Right Ascension: 18 21 56
• Declination: −15 14
• Size (/arcmin): 15×10
• Type: S
• Flux density at 1 GHz (/Jy): 2.7
• Spectral Index: 0.6

Notes: Has been called G16.05−0.57.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=4.9±0.2 Jy), plus other observations. ADS

Last updated: 2006 March 29

G16.2−2.7    

• Right Ascension: 18 29 40
• Declination: −16 08
• Size (/arcmin): 17
• Type: S
• Flux density at 1 GHz (/Jy): 2
• Spectral Index: 0.5

Radio: Double rim.

References:

• Trushkin 1999, A&A, 352, L103. Review of radio observations. ADS

Last updated: 18 Feb 2009

G16.4−0.5    

• Right Ascension: 18 22 38
• Declination: −14 55
• Size (/arcmin): 13
• Type: S
• Flux density at 1 GHz (/Jy): 4.6
• Spectral Index: 0.7

Notes: Has been called G16.41−0.55.

Radio: Partial shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=10.0±0.3 Jy), plus other observations. ADS

Last updated: 26 Mar 2009

G16.7+0.1    

• Right Ascension: 18 20 56
• Declination: −14 20
• Size (/arcmin): 4
• Type: C
• Flux density at 1 GHz (/Jy): 3.0
• Spectral Index: 0.6

Notes: Has been called G16.73+0.08.

Radio: Asymmetric shell with flat-spectrum core.

X-ray: Non-thermal core.

References:

• Helfand et al. 1989, ApJ, 341, 151. VLA at 5 GHz (5: S=0.95 Jy) and 1.4 GHz (15'': S=2.43 Jy) and Ooty at 327 MHz (S=5.13 Jy). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations, including masers. ADS
• Reynoso & Mangum 2000, ApJ, 545, 874. CO observations of surroundings. ADS
• Sugizaki et al. 2001, ApJS, 134, 77. ASCA survey observations. ADS
• Helfand et al. 2003, ApJ, 592, 941. XMM observations. ADS
• Bock & Gaensler 2005, ApJ, 626, 343. BIMA at 88.6 GHz (19''×25''). ADS
• Hewitt et al. 2008, ApJ, 683, 189. GBT at 1.6 and 1.7 GHz for OH masers. ADS

Last updated: 18 Feb 2009

G16.8−1.1    

• Right Ascension: 18 25 20
• Declination: −14 46
• Size (/arcmin): 30×24?
• Type: ?
• Flux density at 1 GHz (/Jy): 2?
• Spectral Index: ?

Notes: Has been called G16.85−1.05.

Radio: Overlapping thermal and non-thermal emission, parameters uncertain.

Point sources: Pulsar within boundary of non-thermal emission.

References:

• Reich et al. 1986, A&A, 155, 185. Effelsberg 100-m at 4.75 GHz (2'.4), plus other observations. ADS

Last updated: 13 Aug 1998

G17.0−0.0    

• Right Ascension: 18 21 57
• Declination: −14 08
• Size (/arcmin): 5
• Type: S
• Flux density at 1 GHz (/Jy): 0.5
• Spectral Index: 0.5

Notes: Has been called G17.02−0.04.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=0.7±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G17.4−2.3    

• Right Ascension: 18 30 55
• Declination: −14 52
• Size (/arcmin): 24?
• Type: S
• Flux density at 1 GHz (/Jy): 4.8?
• Spectral Index: 0.8?

Radio: Incomplete, poorly defined shell.

Optical: Filaments to SE, and diffuse emission.

References:

• Reich et al. 1988, in SNRISM, p293. Summary of parameters. ADS
• Reich et al. 1990, A&AS, 85, 633. Effelsberg 100-m at 2.7 GHz (4'.3). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Boumis et al. 2002, A&A, 385, 1042. Optical observations. ADS

Last updated: 7 Jan 2004

G17.4−0.1    

• Right Ascension: 18 23 08
• Declination: −13 46
• Size (/arcmin): 6
• Type: S
• Flux density at 1 GHz (/Jy): 0.4
• Spectral Index: 0.7

Notes: Has been called G17.48−0.12.

Radio: Partial shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=0.9±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G17.8−2.6    

• Right Ascension: 18 32 50
• Declination: −14 39
• Size (/arcmin): 24
• Type: S
• Flux density at 1 GHz (/Jy): 4.0?
• Spectral Index: 0.3?

Radio: Well defined shell.

References:

• Reich et al. 1988, in SNRISM, p293. Summary of parameters. ADS
• Reich et al. 1990, A&AS, 85, 633. Effelsberg 100-m at 2.7 GHz (4'.3). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS

Last updated: 13 Aug 1998

G18.1−0.1    

• Right Ascension: 18 24 34
• Declination: −13 11
• Size (/arcmin): 8
• Type: S
• Flux density at 1 GHz (/Jy): 4.6
• Spectral Index: 0.5

Notes: Has been called G18.1−0.2 and G18.16−0.16.

Radio: Shell.

X-ray: Detected.

References:

• Odegard 1986, AJ, 92, 1372. TPT at 57.5 MHz (8'). ADS
• Sugizaki et al. 2001, ApJS, 134, 77. ASCA observations. ADS
• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=7.6±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G18.6−0.2    

• Right Ascension: 18 25 55
• Declination: −12 50
• Size (/arcmin): 6
• Type: S
• Flux density at 1 GHz (/Jy): 1.4
• Spectral Index: 0.4

Notes: Has been called G18.62−0.28.

Radio: Partial shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=1.9±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G18.8+0.3     Kes 67

• Right Ascension: 18 23 58
• Declination: −12 23
• Size (/arcmin): 17×11
• Type: S
• Flux density at 1 GHz (/Jy): 33
• Spectral Index: 0.4

Notes: Has been called G18.9+0.3.

Radio: Incomplete shell, in complex region near the HII region W39.

Distance: Association with molecular cloud and HI absorption suggests 12 kpc.

References:

• Willis 1973, A&A, 26, 237. NRAO 300-ft at 2.7 GHz (5': S=17±7 Jy). ADS
• Clark et al. 1975, AuJPA, 37, 75. Molonglo at 408 MHz (3': S=38 Jy). ADS
• Caswell et al. 1975, A&A, 45, 239. Parkes HI absorption. ADS
• Dickel & Milne 1976, AuJPh, 29, 435. Comparison of earlier Parkes 64-m maps at 2.7 GHz (8'.4) and 5 GHz (4'.4). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Milne et al. 1989, PASA, 8, 187. Parkes 64-m at 8.4 GHz (3'.0: S=12.9±1.0 Jy), including polarisation. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (2'.9×3'.5: S=55 Jy). ADS
• Dubner et al. 1996, AJ, 111, 1304. VLA at 1.4 GHz (75''×55'': S=29.9±0.3 Jy). ADS
• Dubner et al. 1999, AJ, 118, 930. Parkes 64-m at 1.6 GHz (15'') for HI, VLA at 1.6 GHz (17''×12'') for OH, plus CO observations. ADS
• Dubner et al. 2004, A&A, 426, 201. CO observations of environment. ADS
• Tian et al. 2007, A&A, 474, 541. VGPS at 1.4 GHz (1') including HI, plus CO of surroundings. ADS

Last updated: 30 Mar 2009

G18.9−1.1    

• Right Ascension: 18 29 50
• Declination: −12 58
• Size (/arcmin): 33
• Type: C?
• Flux density at 1 GHz (/Jy): 37
• Spectral Index: varies

Notes: Has been called G18.95−1.1 and G18.94−1.04.

Radio: Non-thermal, diffuse partially limb-brightened, with central ridge.

X-ray: Partial shell.

Distance: Various observations suggest 2 kpc.

References:

• Fürst et al. 1985, Nature, 314, 720. Effelsberg 100-m at 4.75 GHz (2'.4: S=23.8 Jy), plus other flux densities. ADS
• Odegard 1986, AJ, 92, 1372. TPT at 57.5 MHz (7'.2×8': S=82±15 Jy), plus review of flux densities. ADS
• Barnes & Turtle 1988, in SNRISM, p347. Molonglo at 408 MHz (2'.9×3'.1: S=58±9 Jy) and Parkes 64-m at 5 GHz (4'.4×4'.1: S=23±6 Jy). ADS
• Patnaik et al. 1988, Nature, 332, 136. Ooty at 327 MHz (0'.6×1'.6). ADS
• Fürst et al. 1989, A&A, 209, 361. Effelsberg 100-m at 4.75 GHz (2'.45: S=23.8 Jy) and VLA at 1.5 and 4.9 GHz (19''×14''), and Effelsberg 100-m at 1.4 GHz (9') for HI. ADS
• Aschenbach et al. 1991, A&A, 246, L32. ROSAT observations. ADS
• Fürst et al. 1997, A&A, 319, 655. ROSAT observations, and Effelsberg 100-m at 10.6 GHz (1'.1). ADS
• Reich 2002, in NSPS, p1. Effelsberg 100-m at 10.6 GHz, including polarisation. ADS
• Harrus et al. 2004, ApJ, 603, 152. ROSAT and ASCA observations. ADS

Last updated: 26 Mar 2009

G19.1+0.2    

• Right Ascension: 18 24 56
• Declination: −12 07
• Size (/arcmin): 27
• Type: S
• Flux density at 1 GHz (/Jy): 10
• Spectral Index: 0.5

Notes: Has been called G19.15+0.27.

Radio: Partial shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=17.4±0.4 Jy), plus other observations. ADS

Last updated: 2006 March 29

G20.0−0.2    

• Right Ascension: 18 28 07
• Declination: −11 35
• Size (/arcmin): 10
• Type: F
• Flux density at 1 GHz (/Jy): 10
• Spectral Index: 0.0

Radio: Faint, filled-centre, polarised.

Point sources: OH source 20.1−0.1 is nearby.

References:

• Becker & Helfand 1985, ApJ, 297, L25. VLA at 1.4 and 5 GHz (12''). ADS
• Odegard 1986, AJ, 92, 1372. TPT at 57.5 MHz (7'.2×8': S=8.5±2 Jy), plus review of flux densities. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS

Last updated: 13 Aug 1998

G20.4+0.1    

• Right Ascension: 18 27 51
• Declination: −11 00
• Size (/arcmin): 8
• Type: S
• Flux density at 1 GHz (/Jy): 3.1
• Spectral Index: 0.4

Notes: Has been called G20.47+0.16.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=4.2±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G21.0−0.4    

• Right Ascension: 18 31 12
• Declination: −10 47
• Size (/arcmin): 9×7
• Type: S
• Flux density at 1 GHz (/Jy): 1.1
• Spectral Index: 0.6

Notes: Has been called G21.04−0.47.

Radio: Shell.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=2.3±0.2 Jy), plus other observations. ADS

Last updated: 2006 March 29

G21.5−0.9    

• Right Ascension: 18 33 33
• Declination: −10 35
• Size (/arcmin): 4
• Type: C
• Flux density at 1 GHz (/Jy): 6?
• Spectral Index: 0.0

Notes: Early observations relate to the central core only.

Radio: Filled-centre, with high frequency turnover.

X-ray: Central core, with extended, faint halo.

Point sources: Central pulsar.

Distance: HI absorption indicates 4.6 kpc.

References:

• Wilson & Weiler 1976, A&A, 53, 89. WSRT at 5 GHz (6''×35''). ADS
• Becker & Kundu 1976, ApJ, 204, 427. NRAO interferometer at 2.7 GHz (20''×5'') and 8 GHz (7''×2''), plus review of flux densities. ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Becker & Szymkowiak 1981, ApJ, 248, L23. VLA at 5 GHz (8''), and Einstein observations. ADS
• Davelaar et al. 1986, ApJ, 300, L59. EXOSAT X-ray spectrum, and VLA HI observations. ADS
• Morsi & Reich 1987, A&AS, 69, 533. Effelsberg 100-m at 32 GHz (26".5: S=5.64±0.29 Jy). ADS
• Fürst et al. 1988, PASJ, 40, 347. NRO array at 22.3 GHz (4".4×7".3). ADS
• Salter et al. 1989, A&A, 225, 167. Observations at 90.7 (29".5: S=3.8±0.4 Jy) and 141.9 GHz (S=2.5±1.2 Jy). ADS
• Salter et al. 1989, ApJ, 338, 171. NRAO 12-m at 84.2 GHz (S=3.94±0.70 Jy), plus review of flux densities. ADS
• Asaoka & Koyama 1990, PASJ, 42, 625. Ginga X-ray spectrum. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.3×3'.4: S=9 Jy). ADS
• Wallace et al. 1994, A&A, 286, 565. HI of surroundings. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Slane et al. 2000, ApJ, 533, L29. Chandra observations identifying X-ray halo. ADS
• Warwick et al. 2001, A&A, 365, L248. XMM observations of X-ray halo. ADS
• Bock et al. 2001, ApJ, 561, L203. BIMA at 94 GHz (8".6×4".6). ADS
• Safi-Harb et al. 2001, ApJ, 561, 308. Chandra and other X-ray observations. ADS
• Reich 2002, in NSPS, p1. Effelsberg 100-m at 22 GHz (8'') and 32 GHz, including polarisation. ADS
• La Palombara & Mereghetti 2002, A&A, 383, 916. XMM upper limit on pulsations. ADS
• Bocchino et al. 2005, A&A, 442, 539. XMM and Chandra observations. ADS
• Gupta et al. 2005, Current Science, 89, 853. Pulsar discovery. ADS
• Camilo et al. 2006, ApJ, 637, 456. Pulsar discovery. ADS
• Bietenholz & Bartel 2008, MNRAS, 386, 1411. VLA at 4.75 GHz (0".53×0".82) for expansion studies. ADS
• Tian & Leahy 2008, MNRAS, 391, L54. VGPS at 1.4 GHz (1') including HI. ADS

Last updated: 18 Feb 2009

G21.5−0.1    

• Right Ascension: 18 30 50
• Declination: −10 09
• Size (/arcmin): 5
• Type: S
• Flux density at 1 GHz (/Jy): 0.4
• Spectral Index: 0.5

Notes: Has been called G21.56−0.10.

Radio: Partial shell.

X-ray: Detected.

References:

• Sugizaki et al. 2001, ApJS, 134, 77. ASCA observations. ADS
• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42'': S=0.5±0.1 Jy), plus other observations. ADS

Last updated: 2006 March 29

G21.8−0.6     Kes 69

• Right Ascension: 18 32 45
• Declination: −10 08
• Size (/arcmin): 20
• Type: S
• Flux density at 1 GHz (/Jy): 69
• Spectral Index: 0.5

Radio: Incomplete shell.

X-ray: Detected.

Distance: HI absorption indicates 5.5 to 7.4 kpc.

References:

• Shaver & Goss 1970, AuJPA, 14, 133. Molonglo at 408 MHz (3') and Parkes 64-m at 5 GHz (4'). ADS
• Wilson 1972, A&A, 19, 354. H₂CO absorption. ADS
• Kundu et al. 1974, AJ, 79, 132. NRAO 140-ft at 5 GHz (6') and 10 GHz (3'). ADS
• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft et 2.7 GHz (5': S=42.3±4.6 Jy). ADS
• Dickel & Milne 1976, AuJPh, 29, 435. Comparison of earlier Parkes 64-m maps at 2.7 GHz (8'.4) and 5 GHz (4'.4). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Seward 1990, ApJS, 73, 781. Einstein observations. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.3×3'.5: S=132 Jy). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations, including masers. ADS
• Yusef-Zadeh et al. 2003, ApJ, 585, 319. X-ray observations. ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer observations. ADS
• Hewitt et al. 2008, ApJ, 683, 189. GBT at 1.6 and 1.7 GHz for OH masers. ADS
• Wood et al. 2008, AJ, 135, 2358. VLA at 4.8 GHz, including polarisation. ADS
• Tian & Leahy 2008, MNRAS, 391, L54. VGPS at 1.4 GHz (1') including HI. ADS

Last updated: 16 Mar 2009

G22.7−0.2    

• Right Ascension: 18 33 15
• Declination: −09 13
• Size (/arcmin): 26
• Type: S?
• Flux density at 1 GHz (/Jy): 33
• Spectral Index: 0.6

Radio: Non-thermal ring in complex region, overlapping G23.3−0.3.

References:

• Shaver & Goss 1970, AuJPA, 14, 133. Molonglo at 408 MHz (3') and Parkes 64-m at 5 GHz (4'). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.3×3'.4: S=82 Jy). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer observations. ADS

Last updated: 16 Mar 2009

G23.3−0.3     W41

• Right Ascension: 18 34 45
• Declination: −08 48
• Size (/arcmin): 27
• Type: S
• Flux density at 1 GHz (/Jy): 70
• Spectral Index: 0.5

Radio: Distorted ring, in complex region, overlapping G22.7−0.2.

X-ray: Possible extended emission, with compact sources.

Point sources: Pulsar association suggested.

Distance: HI and CO observations indicate 4.2 kpc.

References:

• Shaver & Goss 1970, AuJPA, 14, 133. Molonglo at 408 MHz (3') and Parkes 64-m at 5 GHz (4'). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.3×3'.4: S=138 Jy). ADS
• Gaensler & Johnston 1995, MNRAS, 275, L73. Possible pulsar association. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Aharonian et al. 2005, Science, 307, 1938. γ-ray detection. ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer possible detection. ADS
• Aharonian et al. 2006, ApJ, 636, 777. γ-ray observations. ADS
• Albert et al. 2006, ApJ, 643, L53. γ-ray observations. ADS
• Landi et al. 2006, ApJ, 651, 190. X-ray observations. ADS
• Tian et al. 2007, ApJ, 657, L25. VGPS at 1.4 GHz (1') including HI, plus XMM observations. ADS
• Leahy & Tian 2008, AJ, 135, 167. VGPS at 1.4 GHz (1') including HI, plus CO observations. ADS

Last updated: 16 Mar 2009

G23.6+0.3    

• Right Ascension: 18 33 03
• Declination: −08 13
• Size (/arcmin): 10?
• Type: ?
• Flux density at 1 GHz (/Jy): 8?
• Spectral Index: 0.3

Radio: Not well resolved, in complex region.

References:

• Shaver & Goss 1970, AuJPA, 14, 133. Molonglo at 408 MHz (3') and Parkes 64-m at 5 GHz (4'). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS

Last updated: 13 Aug 1998

G24.7−0.6    

• Right Ascension: 18 38 43
• Declination: −07 32
• Size (/arcmin): 15?
• Type: S?
• Flux density at 1 GHz (/Jy): 8
• Spectral Index: 0.5

Radio: Incomplete shell, defined in SW.

References:

• Clark et al. 1975, AuJPA, 37, 1. Molonglo at 408 MHz (3': S=12.3 Jy) and Parkes 64-m at 5 GHz (4': S=3.6 Jy). ADS
• Angerhofer et al. 1977, A&A, 55, 11. NRAO 140-ft at 5 GHz (6'.8: S=2.2±0.5 Jy). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Dubner et al. 1993, AJ, 105, 2251. VLA at 1.47 GHz (44''×56'': S=1.9 Jy). ADS
• Frail et al. 1996, AJ, 111, 1651. OH emission near remnant. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS

Last updated: 13 Aug 1998

G24.7+0.6    

• Right Ascension: 18 34 10
• Declination: −07 05
• Size (/arcmin): 30×15
• Type: C?
• Flux density at 1 GHz (/Jy): 20?
• Spectral Index: 0.2?

Radio: Filled-centre, with faint shell, and a compact HII region to the S.

References:

• Shaver & Goss 1970, AuJPA, 14, 133. Molonglo at 408 MHz (3') and Parkes 64-m at 5 GHz (4'). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Reich et al. 1984, A&A, 133, L4. Effelsberg 100-m at 2.7 GHz (4'.3: S=19±3 Jy) and 4.75 GHz (2'.4: S=17±4 Jy) and NRO 45-m at 10.2 GHz (2'.7: S=15±3 Jy). ADS
• Becker & Helfand 1987, ApJ, 316, 660. VLA at 1.4 GHz (12''), and X-ray upper limit. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS

Last updated: 13 Aug 1998

G27.4+0.0     4C−04.71

• Right Ascension: 18 41 19
• Declination: −04 56
• Size (/arcmin): 4
• Type: S
• Flux density at 1 GHz (/Jy): 6
• Spectral Index: 0.68

Notes: Early references refer to G27.3−0.1 (Kes 73), a supposed larger remnant.

Radio: Incomplete shell.

X-ray: Diffuse emission, with central low period pulsar.

Point sources: Central AXP.

Distance: HI absorption suggests 7.5 to 9.8 kpc.

References:

• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5'). ADS
• Dickel & Milne 1976, AuJPh, 29, 435. Comparison of earlier Parkes 64-m maps at 2.7 GHz (8'.4) and 5 GHz (4'.4). ADS
• Angerhofer et al. 1977, A&A, 55, 11. NRAO 140-ft at 5 GHz (6'.8: S=2.0±0.5 Jy). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Clark et al. 1975, AuJPA, 37, 75. Molonglo at 408 MHz (3': S=4.4 Jy). ADS
• Caswell et al. 1982, MNRAS, 200, 1143. FIRST at 1415 MHz (60''×45'': S=3.5 Jy). Revise S_408 MHz=10.4 Jy, and S_5 GHz=1.9±0.2 Jy. ADS
• Kriss et al. 1985, ApJ, 288, 703. Einstein observations, plus VLA at 1.4 and 5 GHz (12''). ADS
• Sanbonmatsu & Helfand 1992, AJ, 104, 2189. VLA at 1.4 GHz for HI absorption. ADS
• Helfand et al. 1994, ApJ, 434, 627. ROSAT observations, particularly of central source. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations, including nearby masers. ADS
• Vasisht & Gotthelf 1997, ApJ, 486, L129. ASCA detection of pulsar. ADS
• Gotthelf & Vasisht 1997, ApJ, 486, L133. ASCA observations. ADS
• Gotthelf et al. 1999, ApJ, 522, L49. X-ray timing observations of pulsar. ADS
• Sugizaki et al. 2001, ApJS, 134, 77. ASCA survey observations. ADS
• Mereghetti et al. 2001, MNRAS, 321, 143. Search for optical/IR counterpart to pulsar. ADS
• Kuiper et al. 2004, ApJ, 613, 1173. X-ray observations of pulsar. ADS
• Tian & Leany 2008, ApJ, 677, 292. VGPS at 1.4 GHz (1') including HI. ADS

Last updated: 18 Feb 2009

G27.8+0.6    

• Right Ascension: 18 39 50
• Declination: −04 24
• Size (/arcmin): 50×30
• Type: F
• Flux density at 1 GHz (/Jy): 30
• Spectral Index: varies

Radio: Filled-centre, with spectral turnover.

References:

• Reich et al. 1984, A&A, 133, L4. Effelsberg 100-m at 2.7 GHz (4'.3: S=23±2 Jy), and 4.75 GHz (2'.4: S=18±2 Jy) and NRO 45-m at 10.2 GHz (smoothed to 4'.3: S=8.5±2 Jy). ADS
• Frail et al. 1996, AJ, 111, 1651. OH emission near remnant. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Casandjian & Grenier 2008, A&A, 489, 849. γ-ray observations. ADS

Last updated: 18 Feb 2009

G28.6−0.1    

• Right Ascension: 18 43 55
• Declination: −03 53
• Size (/arcmin): 13×9
• Type: S
• Flux density at 1 GHz (/Jy): 3?
• Spectral Index: ?

Radio: Poorly defined regions of non-thermal emission.

X-ray: Diffuse shell, with thermal and non-thermal emission.

References:

• Helfand et al. 1989, ApJ, 341, 151. VLA at 1.4 GHz (15'') and 5 GHz (15''). ADS
• Bamba et al. 2001, PASJ, 53, L21. ASCA observations. ADS
• Ueno et al. 2003, ApJ, 588, 338. Chandra observations. ADS

Last updated: 11 Jan 2004

G28.8+1.5    

• Right Ascension: 18 39 00
• Declination: −02 55
• Size (/arcmin): 100?
• Type: S?
• Flux density at 1 GHz (/Jy): ?
• Spectral Index: 0.4?

Radio: Part of rim detected.

X-ray: Diffuse, Centrally brightened.

References:

• Schwentker 1994, A&A, 286, L47. ROSAT observations. ADS
• Song et al. 2000, PASJ, 52, 181. ASCA observations. ADS
• Casandjian & Grenier 2008, A&A, 489, 849. γ-ray observations. ADS

Last updated: 18 Feb 2009

G29.6+0.1    

• Right Ascension: 18 44 52
• Declination: −02 57
• Size (/arcmin): 5
• Type: S
• Flux density at 1 GHz (/Jy): 1.5?
• Spectral Index: 0.5?

Radio: Diffuse shell.

Point sources: AXP associated.

References:

• Gaensler et al. 1999, ApJ, 526, L37. VLA at 5 GHz (13'') and 8 GHz (8'') ADS
• Vasisht et al. 2000, ApJ, 542, L49. X-ray observations of AXP. ADS

Last updated: 10 Oct 2001

G29.7−0.3     Kes 75

• Right Ascension: 18 46 25
• Declination: −02 59
• Size (/arcmin): 3
• Type: C
• Flux density at 1 GHz (/Jy): 10
• Spectral Index: 0.7

Notes: Has erroneously been called G29.6+0.1.

Radio: Shell with flatter spectrum emission from centre.

X-ray: Thermal shell and non-thermal core, and central pulsar.

Point sources: X-ray pulsar.

Distance: HI absorption indicates possibly <7.5 kpc.

References:

• Shaver & Goss 1970, AuJPA, 14, 133. Molonglo at 408 MHz (3') and Parkes 64-m at 5 GHz (4'). ADS
• Milne & Dickel 1974, AuJPh, 27, 549. Parkes 64-m at 2.7 GHz (8'.4: S=5±20% Jy). ADS
• Becker & Kundu 1975, AJ, 80, 679. NRAO 140-ft at 10.6 GHz (3'). ADS
• Becker & Kundu 1976, ApJ, 204, 427. NRAO interferometer at 2.7 GHz (20''×7'') and 8 GHz (25''×8''), plus review of flux densities. ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Becker et al. 1983, ApJ, 268, L93. VLA at 1.4 GHz (3''), plus Einstein observations. ADS
• Becker & Helfand 1984, ApJ, 283, 154. VLA at 5 GHz (2".6), plus HI. ADS
• Morsi & Reich 1987, A&AS, 71, 189. Effelsberg 100-m at 32 GHz (26".5: S=1.02±0.07 Jy). ADS
• Salter et al. 1989, ApJ, 338, 171. NRAO 12-m at 84.2 GHz of core, plus review of flux densities. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.4×3'.7: S=27.4 Jy). ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Blanton & Helfand 1996, ApJ, 470, 961. ASCA observations. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Gotthelf et al. 2000, ApJ, 542, L37. X-ray pulsar detection. ADS
• Sugizaki et al. 2001, ApJS, 134, 77. ASCA survey observations. ADS
• Mereghetti et al. 2002, ApJ, 574, 873. BeppoSAX observations of pulsar. ADS
• Helfand et al. 2003, ApJ, 582, 783. Chandra observations. ADS
• Bock & Gaensler 2005, ApJ, 626, 343. BIMA at 88.6 GHz (10''×13''). ADS
• Morton et al. 2007, ApJ, 667, 219. Spitzer and Chandra observations. ADS
• McBride et al. 2008, A&A, 477, 249. γ-ray and Chandra observations. ADS
• Leahy & Tian 2008, A&A, 480, L25. VGPS at 1.4 GHz (1') including HI. ADS
• Kumar & Safi-Harb 2008, ApJ, 678, L43. Chandra observations. ADS
• Ng et al. 2008, ApJ, 686, 508. Chandra observations. ADS
• Gavriil et al. 2008, Science, 319, 1802. X-ray observations of pulsar. ADS

Last updated: 19 Feb 2009

G30.7−2.0    

• Right Ascension: 18 54 25
• Declination: −02 54
• Size (/arcmin): 16
• Type: ?
• Flux density at 1 GHz (/Jy): 0.5?
• Spectral Index: 0.7?

Radio: Poorly defined.

References:

• Reich et al. 1988, in SNRISM, p293. Summary of parameters. ADS
• Reich et al. 1990, A&AS, 85, 633. Effelsberg 100-m at 2.7 GHz (4'.3). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS

Last updated: 13 Aug 1998

G30.7+1.0    

• Right Ascension: 18 44 00
• Declination: −01 32
• Size (/arcmin): 24×18
• Type: S?
• Flux density at 1 GHz (/Jy): 6
• Spectral Index: 0.4

Radio: Non-thermal, highly polarised part shell?

Point sources: Compact source near centre.

References:

• Reich et al. 1986, A&A, 155, 185. Effelsberg 100-m at 4.75 GHz (2'.4: S=3.4±0.4 Jy), plus other flux densities. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.6×3'.9: S=8.6 Jy). ADS
• Gorham et al. 1996, ApJ, 458, 257. Pulsar search. ADS

Last updated: 13 Aug 1998

G31.5−0.6    

• Right Ascension: 18 51 10
• Declination: −01 31
• Size (/arcmin): 18?
• Type: S?
• Flux density at 1 GHz (/Jy): 2?
• Spectral Index: ?

Notes: Has been called G31.55−0.65.

Radio: Distorted shell? near HII region.

Optical: Diffuse, incomplete shell.

References:

• Fürst et al. 1987, A&AS, 69, 403. Effelsberg 100-m at 4.75 GHz (2'.4), plus other flux densities. ADS
• Mavromatakis et al. 2001, A&A, 370, 265. Optical observations. ADS

Last updated: 17 Oct 2001

G31.9+0.0     3C391

• Right Ascension: 18 49 25
• Declination: −00 55
• Size (/arcmin): 7×5
• Type: S
• Flux density at 1 GHz (/Jy): 24
• Spectral Index: 0.49

Radio: Shell, brightest in NW, with low frequency turnover.

X-ray: Diffuse with central core.

Distance: HI absorption is seen to the tangent point (8.5 kpc).

References:

• Radhakrishnan et al. 1972, ApJS, 24, 49. HI absorption. ADS
• Becker & Kundu 1975, AJ, 80, 679. NRAO 140-ft at 10.6 GHz (3'). ADS
• Green et al. 1975, A&A, 44, 187. Effelsberg 100-m at 15 GHz (58'': S>1.6). ADS
• Becker & Kundu 1976, ApJ, 204, 427. NRAO interferometer at 2.7 GHz (20''×23'') and 8 GHz (24''×9''), plus review of flux densities. ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Goss et al. 1979, A&A, 78, 75. FIRST at 1.4 GHz (54''×66'': S=20±2 Jy) and Effelsberg 100-m at 10.7 GHz (77'': S=7.5±0.8 Jy). ADS
• Wang & Seward 1984, ApJ, 279, 705. Einstein observations. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.4×3'.7: S=44.8 Jy). ADS
• Reynolds & Moffett 1993, AJ, 105, 2226. VLA at 1.4 GHz (6''), including possible associated CO. ADS
• Moffett & Reynolds 1994, ApJ, 425, 668. VLA at 330 MHz (smoothed to 30'': S=38.5±0.5 Jy) 1.46 GHz (6".7) and 4.85 GHz (6".2×6".4), including spectral index and polarisation studies. ADS
• Frail et al. 1996, AJ, 111, 1651. OH emission near remnant, including masers. ADS
• Gorham et al. 1996, ApJ, 458, 257. Pulsar search. ADS
• Reach & Rho 1996, A&A, 315, L277. ISO spectroscopy. ADS
• Rho & Petre 1996, ApJ, 467, 698. ROSAT observations. ADS
• Wilner et al. 1998, AJ, 115, 247. CO observations of surroundings. ADS
• Reach & Rho 1998, ApJ, 507, L93. ISO observations. ADS
• Reach & Rho 1999, ApJ, 511, 836. CO, HCO⁺ and CS observations of surroundings. ADS
• Reach & Rho 2000, ApJ, 544, 843. ISO observations of interactions with surroundings. ADS
• Sugizaki et al. 2001, ApJS, 134, 77. ASCA survey observations. ADS
• Chen & Slane 2001, ApJ, 563, 202. ASCA observations. ADS
• Reach et al. 2002, ApJ, 564, 302. Observations of shocked molecular species. ADS
• Chen et al. 2004, ApJ, 616, 885. Chandra observations. ADS
• Brogan et al. 2005, AJ, 130, 148. VLA at 74 MHz, 330 MHz and 1.5 GHz (70''). ADS
• Kawasaki et al. 2005, ApJ, 631, 935. ASCA observations. ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer observations. ADS
• Neufeld et al. 2007, ApJ, 664, 890. Spitzer IR observations. ADS
• Hewitt et al. 2008, ApJ, 683, 189. GBT at 1.6 and 1.7 GHz for OH masers. ADS

Last updated: 16 Mar 2009

G32.0−4.9     3C396.1

• Right Ascension: 19 06 00
• Declination: −03 00
• Size (/arcmin): 60?
• Type: S?
• Flux density at 1 GHz (/Jy): 22?
• Spectral Index: 0.5?

Radio: Possible large shell?

References:

• Milne & Hill 1969, AuJPh, 22, 211. Parkes 64-m at 635 MHz (31': S=25±30% Jy), 1410 MHz (15': S=19±15% Jy) and 2650 MHz (8'.4: S=8.6±30% Jy). Fluxes if size is 60', plus review of flux densities. ADS
• Caswell 1970, AuJPh, 23, 105. Revision of low frequency flux densities. ADS
• Dickel & DeNoyer 1975, AJ, 80, 437. Arecibo at 111 MHz (S=105±30 Jy). ADS

Last updated: 25th February 1988

G32.1−0.9    

• Right Ascension: 18 53 10
• Declination: −01 08
• Size (/arcmin): 40?
• Type: C?
• Flux density at 1 GHz (/Jy): ?
• Spectral Index: ?

Radio: Possible faint shell, not well defined.

X-ray: Diffuse, with clumps.

References:

• Folgheraiter et al. 1997, MNRAS, 292, 365. ROSAT and ASCA observations. ADS

Last updated: 17 Aug 1998

G32.4+0.1    

• Right Ascension: 18 50 05
• Declination: −00 25
• Size (/arcmin): 6
• Type: S
• Flux density at 1 GHz (/Jy): 0.25?
• Spectral Index: ?

Notes: Has been called G32.45+0.1.

Radio: Shell.

X-ray: Shell.

Distance: X-ray absorption suggests 17 kpc.

References:

• Yamaguchi et al. 2004, PASJ, 56, 1059. XMM and other observations. ADS
• Ueno et al. 2005, in XRRC, E4.18. XMM observations. ADS

Last updated: 16 Mar 2009

G32.8−0.1     Kes 78

• Right Ascension: 18 51 25
• Declination: −00 08
• Size (/arcmin): 17
• Type: S?
• Flux density at 1 GHz (/Jy): 11?
• Spectral Index: 0.2?

Notes: Part has been called G33.1−0.1.

Radio: Elongated shell?

References:

• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft et 2.7 GHz (5': S=7.2±0.5 Jy). ADS
• Dickel & DeNoyer 1975, AJ, 80, 437. Arecibo at 430 MHz (S=19.0±15.5 Jy). ADS
• Becker & Kundu 1975, AJ, 80, 679. NRAO 140-ft at 10.6 GHz (3'). ADS
• Caswell et al. 1975, AuJPA, 37, 39. Molonglo at 408 MHz (3': S=12.8 Jy) and Parkes 64-m at 5 GHz (4': S=7.7 Jy). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.6×3'.8: S=31.3 Jy). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Koralesky et al. 1998, AJ, 116, 1323. VLA detection of compact OH emission. ADS

Last updated: 1 Aug 2000

G33.2−0.6    

• Right Ascension: 18 53 50
• Declination: −00 02
• Size (/arcmin): 18
• Type: S
• Flux density at 1 GHz (/Jy): 3.5
• Spectral Index: varies

Radio: Incomplete shell.

References:

• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Reich 1982, A&A, 106, 314. Effelsberg 100-m at 2.7 GHz (4'.4: S=2.6±0.3 Jy) and 4.75 GHz (2'.5: S=1.75±0.2 Jy). ADS
• Dubner et al. 1996, AJ, 111, 1304. VLA at 1.4 GHz (68''×52'': S=2.7±0.3 Jy). ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS

Last updated: 13 Aug 1998

G33.6+0.1     Kes 79, 4C00.70, HC13

• Right Ascension: 18 52 48
• Declination: +00 41
• Size (/arcmin): 10
• Type: S
• Flux density at 1 GHz (/Jy): 22
• Spectral Index: 0.5

Notes: Has been called G33.7+0.0.

Radio: Shell, with bright central region, in complex region.

X-ray: Multiple shells and filaments.

Point sources: Central X-ray pulsar.

Distance: HI absorption gives about 7.8 kpc.

References:

• Caswell et al. 1975, AuJPA, 37, 39. Molonglo at 408 MHz (3': S=35.5 Jy) and Parkes 64-m at 5 GHz (4': S=7.8 Jy). ADS
• Caswell et al. 1975, A&A, 45, 239. HI absorption. ADS
• Dickel & DeNoyer 1975, AJ, 80, 437. Arecibo S_430 MHz=69±33 Jy. ADS
• Becker & Kundu 1975, AJ, 80, 679. NRAO 140-ft at 10.6 GHz (3': S=6.8±1.5 Jy). ADS
• Angerhofer et al. 1977, A&A, 55, 11. NRAO 140-ft at 5 GHz (6'.8: S=11.4±1.1 Jy). ADS
• Caswell et al. 1981, MNRAS, 195, 89. FIRST at 1415 MHz (1'), plus observations of the nearby point source. ADS
• van Gorkom et al. 1982, MNRAS, 198, 757. WSRT HI absorption to nearby point source, possibly extragalactic. ADS
• Seaquist & Gilmore 1982, AJ, 87, 378. VLA observations of nearby source, plus Einstein observations. ADS
• Green 1989, MNRAS, 238, 737. OH absorption. ADS
• Frail & Clifton 1989, ApJ, 336, 854. VLA at 1.4 GHz (1'×2'.9), including HI absorption. ADS
• Velusamy et al. 1991, AJ, 102, 676. VLA at 327 MHz (1'), 1.5 (7''×14'') and 5 GHz (7''), including spectral comparison. ADS
• Green & Dewdney 1992, MNRAS, 254, 686. Observations of adjacent molecular material. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.6×3'.8: S=34.8 Jy). ADS
• Seward & Velusamy 1995, ApJ, 439, 715. ROSAT observations. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Koralesky et al. 1998, AJ, 116, 1323. VLA search for OH emission. ADS
• Sugizaki et al. 2001, ApJS, 134, 77. ASCA survey observations. ADS
• Tsunemi & Enoguchi 2002, PASJ, 54, 735. ASCA observations. ADS
• Seward et al. 2003, ApJ, 584, 414. Chandra observations. ADS
• Stanimirović 2003, ApJ, 592, 953. Arecibo OH absorption. ADS
• Sun et al. 2004, ApJ, 605, 742. Chandra observations. ADS
• Gotthelf et al. 2005, ApJ, 627, 390. XMM pulsar detection. ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer possible detection. ADS
• Halpern et al. 2007, ApJ, 665, 1304. X-ray pulsar timing observations. ADS

Last updated: 16 Mar 2009

G34.7−0.4     W44, 3C392

• Right Ascension: 18 56 00
• Declination: +01 22
• Size (/arcmin): 35×27
• Type: C
• Flux density at 1 GHz (/Jy): 230
• Spectral Index: 0.37

Notes: Has been called G34.6−0.5.

Radio: Distorted shell, brighter to the E, with pulsar and associated nebula.

Optical: Diffuse emission.

X-ray: Centrally concentrated, thermal spectrum, plus pulsar wind nebula.

Point sources: Pulsar within the boundary of the remnant.

Distance: HI absorption indicates 2.8 kpc.

References:

• Kundu & Velusamy 1972, A&A, 20, 237. NRAO 140-ft at 10.7 GHz (3': S=105±7 Jy). ADS
• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5': S=177±10 Jy). ADS
• Caswell et al. 1975, A&A, 45, 239. HI absorption. ADS
• Clark et al. 1975, AuJPA, 37, 75. Molonglo at 408 MHz (3': S=299 Jy). ADS
• Dickel & DeNoyer 1975, AJ, 80, 437. Arecibo S_430 MHz=540±187 Jy. ADS
• Dickel & Milne 1976, AuJPh, 29, 435. Comparison of earlier Parkes 64-m maps at 2.7 GHz (8'.4) and 5 GHz (4'.4). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Smith et al. 1985, MNRAS, 217, 99. Einstein observations. ADS
• Wolszczan et al. 1991, ApJ, 372, L99. Pulsar detection. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.6×3'.8: S=469 Jy). ADS
• Jones et al. 1993, MNRAS, 265, 631. VLA at 1.4 GHz (15''), plus X-ray spectra. ADS
• Rho et al. 1994, ApJ, 430, 757. Optical and ROSAT observations. ADS
• Koo & Heiles 1995, ApJ, 442, 679. HI of surrounding shell. ADS
• Esposito et al. 1996, ApJ, 461, 820. Possible associated γ-ray emission. ADS
• Harrus et al. 1996, ApJ, 464, L161. ASCA observations. ADS
• Frail et al. 1996, ApJ, 464, L165. VLA at 1.5 and 8.4 GHz (8".9×7".8) of pulsar nebula. ADS
• Frail et al. 1996, AJ, 111, 1651. OH maser emission. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Reach & Rho 1996, A&A, 315, L277. ISO spectroscopy. ADS
• Harrus et al. 1997, ApJ, 488, 781. X-ray observations. ADS
• Claussen et al. 1997, ApJ, 489, 143. VLA of associated OH masers. ADS
• Giacani et al. 1997, AJ, 113, 1379. VLA at 1.4 GHz (15''), plus optical images. ADS
• Seta et al. 1998, ApJ, 505, 286. CO observations of surroundings. ADS
• Cox et al. 1999, ApJ, 524, 179. Revision of distance. ADS
• Reach & Rho 2000, ApJ, 544, 843. ISO observations of interactions with surroundings. ADS
• Roberts et al. 2001, ApJS, 133, 451. ASCA observations. ADS
• Petre et al. 2002, ApJ, 579, 404. Chandra observations of pulsar and wind nebula. ADS
• Mavromatakis et al. 2003, A&A, 405, 591. Optical observations. ADS
• Shelton et al. 2004, ApJ, 611, 906. Chandra observations of part. ADS
• Reach et al.2005, ApJ, 618, 297. Molecular line and near-IR observations. ADS
• Hoffman et al. 2005, ApJ, 627, 803. Observations of OH masers. ADS
• Kawasaki et al. 2005, ApJ, 631, 935. ASCA observations. ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer observations. ADS
• Neufeld et al. 2007, ApJ, 664, 890. Spitzer IR observations. ADS
• Hewitt et al. 2008, ApJ, 683, 189. GBT at 1.6 and 1.7 GHz for OH masers. ADS
• Castelletti et al. 2007, A&A, 471, 537. VLA at 74 MHz (36''×39'': S=634±70 Jy) and 324 MHz (13'': S=411±50 Jy). ADS

Last updated: 16 Mar 2009

G36.6−0.7    

• Right Ascension: 19 00 35
• Declination: +02 56
• Size (/arcmin): 25?
• Type: S?
• Flux density at 1 GHz (/Jy): ?
• Spectral Index: ?

Radio: polarised arc, possibly part of a larger shell?

References:

• Fürst et al. 1987, A&AS, 69, 403. Effelsberg 100-m at 4.75 GHz (2'.4), plus other flux densities. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.4×3'.7: S=6.7 Jy). ADS
• Gorham et al. 1996, ApJ, 458, 257. Pulsar search. ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer possible detection. ADS

Last updated: 16 Mar 2009

G36.6+2.6    

• Right Ascension: 18 48 49
• Declination: +04 26
• Size (/arcmin): 17×13?
• Type: S
• Flux density at 1 GHz (/Jy): 0.7?
• Spectral Index: 0.5?

Radio: Poorly resolved shell.

References:

• Reich et al. 1988, in SNRISM, p293. Summary of parameters. ADS
• Reich et al. 1990, A&AS, 85, 633. Effelsberg 100-m at 2.7 GHz (4'.3). ADS

Last updated: 19th May 1992

G39.2−0.3     3C396, HC24, NRAO 593

• Right Ascension: 19 04 08
• Declination: +05 28
• Size (/arcmin): 8×6
• Type: C
• Flux density at 1 GHz (/Jy): 18
• Spectral Index: 0.6

Radio: Shell, brighter to W, with faint `tail' to E.

X-ray: Diffuse, brighter to W, with central core.

Point sources: Central X-ray source.

Distance: HI absorption suggests >7.7 kpc.

References:

• Shaver & Goss 1970, AuJPA, 14, 133. Molonglo at 408 MHz (3'). ADS
• Dickel & DeNoyer 1975, AJ, 80, 437. Arecibo S_430 MHz=54±38 Jy. ADS
• Becker & Kundu 1975, AJ, 80, 679. NRAO 140-ft at 10.6 GHz (3': S=4.1±1.0 Jy). ADS
• Caswell et al. 1975, A&A, 45, 239. HI absorption. ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Caswell et al. 1982, MNRAS, 200, 1143. FIRST at 1.4 GHz (65''×48''). ADS
• Becker & Helfand 1987, AJ, 94, 1629. VLA at 1.4 GHz (12'': S=14 Jy) and 5 GHz, plus Einstein observations. ADS
• Patnaik et al. 1990, A&A, 232, 467. VLA at 1.5 GHz (25'') and 1.4 GHz (7".8×7".5) and 5 GHz (25'') including polarisation, plus Ooty at 327 MHz (100''×31''), including review of flux densities. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.5×3'.6: S=42.5 Jy). ADS
• Anderson & Rudnick 1993, ApJ, 408, 514. VLA at 1.45 and 4.89 GHz for spectral index studies. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Gorham et al. 1996, ApJ, 458, 257. Pulsar search. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Koralesky et al. 1998, AJ, 116, 1323. VLA search for OH emission. ADS
• Harrus & Slane 1999, ApJ, 516, 811. ASCA observations. ADS
• Aharonian et al. 2001, A&A, 375, 1008. Limit on high energy γ-rays. ADS
• Olbert et al. 2003, ApJ, 592, L45. Chandra observations. ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer observations. ADS
• Scaife et al. 2007, MNRAS, 377, L69. 33 GHz observations. ADS

Last updated: 16 Mar 2009

G39.7−2.0     W50, SS433

• Right Ascension: 19 12 20
• Declination: +04 55
• Size (/arcmin): 120×60
• Type: ?
• Flux density at 1 GHz (/Jy): 85?
• Spectral Index: 0.7?

Notes: Eastern part has been called G40.0−3.1. Is this a SNR?

Radio: Elongated shell, containing SS433, adjacent to the HII region S74.

Optical: Faint filaments at the edge of the radio emission.

X-ray: Emission from SS433 and two lobes.

Point sources: SS433 is the compact source in the centre of the W50.

Distance: HI absorption indicates 6.0±0.5 kpc.

References:

• van den Bergh 1980, ApJ, 236, L23. Optical in Hα and [SII]. ADS
• Zealey et al. 1980, MNRAS, 192, 731. Optical spectra. ADS
• van Gorkom et al. 1982, MNRAS, 198, 757. WSRT HI absorption to nearby point source (not SS433). ADS
• Seaquist & Gilmore 1982, AJ, 87, 378. VLA observations of nearby source. ADS
• Watson et al. 1983, ApJ, 273, 688. X-ray observations. ADS
• Downes et al. 1986, MNRAS, 218, 393. Effelsberg 100-m at 4.75 GHz (2'.4: S=34±4 Jy), plus previous 1.7 and 2.7 GHz data. ADS
• Romney et al. 1987, ApJ, 321, 822. VLBI of SS433, including distance. ADS
• Elston & Baum 1987, AJ, 94, 1633. Mosaic with VLA at 1.4 GHz (30'') of fine structure only. ADS
• Kawai et al. 1989, PASJ, 41, 491. X-ray observations of SS433. ADS
• Band 1989, ApJ, 336, 937. Einstein and EXOSAT observations. ADS
• Yamauchi et al. 1994, PASJ, 46, L109. X-ray spectral observations. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Brinkmann et al. 1996, A&A, 312, 306. ROSAT observations. ADS
• Kotami et al. 1996, PASJ, 48, 619. X-ray line emission from SS433. ADS
• Safi-Harb & Ögelman 1997, ApJ, 483, 868. ROSAT observations. ADS
• Dubner et al. 1998, AJ, 116, 1842. VLA at 328 MHz (64''×60'': S=160±20 Jy), and 1.4 GHz (56''×54''), plus NRAO 140-ft at 1.4 GHz (21') for HI observations. ADS
• Safi-Harb & Petre 1999, ApJ, 512, 784. X-ray observations. ADS
• Aharonian et al. 2001, A&A, 375, 1008. Limit on high energy γ-rays. ADS
• Brinkmann et al. 2007, A&A, 463, 611. XMM observations of E lobe. ADS
• Boumis et al. 2007, MNRAS, 381, 308. Optical observations. ADS
• Lockman et al. 2007, MNRAS, 381, 881. HI observations. ADS

Last updated: 19 Feb 2009

G40.5−0.5    

• Right Ascension: 19 07 10
• Declination: +06 31
• Size (/arcmin): 22
• Type: S
• Flux density at 1 GHz (/Jy): 11
• Spectral Index: 0.5

Radio: Shell, brightest to the NE.

References:

• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Downes et al. 1980, A&A, 92, 47. Effelsberg 100-m at 1.7 GHz (7'.6: S=9.3±1.3 Jy), and 2.7 GHz (4'.4: S=7.2±0.5 Jy), plus review of flux densities. ADS
• Aharonian et al. 2001, A&A, 375, 1008. Limit on high energy γ-rays. ADS
• Yang et al. 2006, ChJAA, 6, 210. CO observations of surroundings. ADS
• Abdo et al. 2007, ApJ, 664, L91. γ-ray observations. ADS

Last updated: 19 Feb 2009

G41.1−0.3     3C397

• Right Ascension: 19 07 34
• Declination: +07 08
• Size (/arcmin): 4.5×2.5
• Type: S
• Flux density at 1 GHz (/Jy): 22
• Spectral Index: 0.48

Radio: 3C397 is two sources: the E is the SNR, the W is a HII region.

X-ray: Brighter to the E and W, with central component.

Distance: Possible limit of >7.5 kpc for non-thermal component from HI absorption.

References:

• Kundu et al. 1974, AJ, 79, 132. NRAO 140-ft at 10 GHz (3') and 5 GHz (6'). ADS
• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5': S=21.3±1.2 Jy for both components). ADS
• Caswell et al. 1975, A&A, 45, 239. HI absorption. ADS
• Dickel & DeNoyer 1975, AJ, 80, 437. Arecibo S_430 MHz=82±51 Jy, also Algonquin 46-m at 10.6 GHz (3': S=12±2 Jy), and Haystack 36-m at 15.5 GHz (2'.3: S=8.5±3.0 Jy). ADS
• Caswell et al. 1975, AuJPA, 37, 39. Molonglo at 408 MHz (3': S=29.8 Jy) and Parkes 64-m at 5 GHz (4': S=8.7 Jy). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Caswell et al. 1982, MNRAS, 200, 1143. FIRST at 1.4 GHz (58''×52''). ADS
• Becker et al. 1985, ApJ, 296, 461. VLA at 1.4 and 5 GHz (8''), plus Einstein observations. ADS
• Morsi & Reich 1987, A&AS, 71, 189. Effelsberg 100-m at 32 GHz (smoothed to 30'': S=1.10±0.19 Jy). ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.5×3'.6: S=46.3 Jy). ADS
• Anderson & Rudnick 1993, ApJ, 408, 514. VLA at 1.45 and 4.89 GHz, for spectral index studies. ADS
• Gorham et al. 1996, ApJ, 458, 257. Pulsar search. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Chen et al. 1999, ApJ, 520, 737. ASCA and ROSAT observations. ADS
• Dyer & Reynolds 1999, ApJ, 526, 365. VLA at 1.5 GHz (6".9×6".6) and 4.8 GHz (46".4×5".6), including polarisation and comparison with ROSAT image. ADS
• Safi-Harb et al. 2000, ApJ, 545, 922. ROSAT, ASCA and other X-ray observations. ADS
• Sugizaki et al. 2001, ApJS, 134, 77. ASCA survey observations. ADS
• Aharonian et al. 2001, A&A, 375, 1008. Limit on high energy γ-rays. ADS
• Safi-Harb et al. 2005, ApJ, 618, 321. Chandra observations. ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer observations. ADS

Last updated: 16 Mar 2009

G42.8+0.6    

• Right Ascension: 19 07 20
• Declination: +09 05
• Size (/arcmin): 24
• Type: S
• Flux density at 1 GHz (/Jy): 3?
• Spectral Index: 0.5?

Notes: Has been called G42.8+0.65.

Radio: Faint shell.

Point sources: Near soft gamma repeater, and young pulsar.

References:

• Fürst et al. 1987, A&AS, 69, 403. Effelsberg 100-m at 4.75 GHz (2'.4: S=1.5±0.2 Jy), plus other flux densities. ADS
• Vasisht et al. 1994, ApJ, 431, L35. VLA at 327 MHz (3'.2×3'.4). ADS
• Hurley et al. 1996, ApJ, 463, L13. Observations of soft gamma repeater field. ADS
• Lorimer & Xilouris 2000, ApJ, 545, 385. Pulsar detection. ADS
• Aharonian et al. 2001, A&A, 375, 1008. Limit on high energy γ-rays. ADS
• Kaplan et al. 2002, ApJ, 566, 378. VLA at 333 MHz (50''), and other observations of the region. ADS

Last updated: 11 Jan 2004

G43.3−0.2     W49B

• Right Ascension: 19 11 08
• Declination: +09 06
• Size (/arcmin): 4×3
• Type: S
• Flux density at 1 GHz (/Jy): 38
• Spectral Index: 0.48

Radio: Shell, brightest to the SE and W, near the HII region W49A.

X-ray: Centrally brightened, elongated E–W.

Distance: HI absorption indicates 10 kpc.

References:

• Shaver & Goss 1970, AuJPA, 14, 133. Molonglo at 408 MHz (3') and Parkes 64-m at 2.7 GHz (4'). ADS
• Downes & Wilson 1974, A&A, 34, 133. Effelsberg 100-m at 10.7 GHz (1'.3). ADS
• Green et al. 1975, A&A, 44, 187. Effelsberg 100-m at 15.0 GHz (58'': S=9.0±0.7 Jy). ADS
• Lockhart & Goss 1978, A&A, 67, 355. HI absorption. ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Pye et al. 1984, MNRAS, 207, 649. Einstein observations, and VLA at 1.4 and 5 GHz (both 12''). ADS
• Smith et al. 1985, ApJ, 296, 469. EXOSAT spectrum. ADS
• Morsi & Reich 1987, A&AS, 71, 189. Effelsberg 100-m at 32 GHz (smoothed to 30'': S=6.90±0.38 Jy). ADS
• Moffett & Reynolds 1994, ApJ, 437, 705. VLA at 330 MHz (6".7×7".7: S=64.4 Jy), 1.48 GHz (4".8×5".2: S=31.8 Jy) and 4.85 GHz (4".0×4".1), including polarisation. ADS
• Fujimoto et al. 1995, PASJ, 47, L31. ASCA observations. ADS
• Gorham et al. 1996, ApJ, 458, 257. Pulsar search. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations. ADS
• Hwang et al. 2000, ApJ, 532, 970. ROSAT image and ASCA spectroscopy. ADS
• Sugizaki et al. 2001, ApJS, 134, 77. ASCA survey observations. ADS
• Aharonian et al. 2001, A&A, 375, 1008. Limit on high energy γ-rays. ADS
• Brogan & Troland 2001, ApJ, 550, 799. VLA at 1.4 GHz (27''×24'' and 5'') for HI Zeeman splitting. ADS
• Lacey et al. 2001, ApJ, 559, 954. VLA at 74 MHz (26''×23'': S=55.6 Jy) and 326 MHz (6".6×6".2: S=56.0 Jy). ADS
• Kaplan et al. 2002, ApJ, 566, 378. VLA at 333 MHz (50''), and other observations of the region. ADS
• Kawasaki et al. 2005, ApJ, 631, 935. ASCA observations. ADS
• Reach et al. 2006, AJ, 131, 1479. Spitzer observations. ADS
• Miceli et al. 2006, A&A, 453, 567. XMM observations. ADS
• Keohane et al. 2007, ApJ, 654, 938. IR and Chandra observations. ADS

Last updated: 16 Mar 2009

G43.9+1.6    

• Right Ascension: 19 05 50
• Declination: +10 30
• Size (/arcmin): 60?
• Type: S?
• Flux density at 1 GHz (/Jy): 8.6?
• Spectral Index: 0.2?

Radio: Large, poorly defined faint shell.

Point sources: Soft gamma repeater nearby.

References:

• Reich et al. 1988, in SNRISM, p293. Summary of parameters. ADS
• Reich et al. 1990, A&AS, 85, 633. Effelsberg 100-m at 2.7 GHz (4'.3). ADS
• Vasisht et al. 1994, ApJ, 431, L35. VLA at 327 MHz (3'.2×3'.4). ADS
• Hurley et al. 1996, ApJ, 463, L13. Observations of soft gamma repeater field. ADS
• Kaplan et al. 2002, ApJ, 566, 378. VLA at 333 MHz (50''), and other observations of the region. ADS

Last updated: 11 Jan 2004