Note: this is an archived version which has been superseded.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

2nd quadrant Galactic SNRs

G93.3+6.9 DA 530, 4C(T)55.38.1

• Right Ascension: 20 52 25
• Declination: +55 21
• Size (/arcmin): 27×20
• Type: S
• Flux density at 1 GHz (/Jy): 9
• Spectral Index: 0.54

Notes: Has been called G93.2+6.7.

Radio: Shell, with two bright limbs, highly polarized.

Distance: HI observations suggest 2.2 kpc.

References:

• Roger & Costain 1976, A&A, 51, 151. DRAO at 1.42 GHz (2'×2'.4: S=6.9 Jy). ADS
• Haslam et al. 1980, A&A, 92, 57. Effelsberg 100-m at 1.72 GHz (7'.6: S=6.47±0.52 Jy) and 2.7 GHz (4'.4: S=5.64±0.64 Jy), plus review of flux densities. ADS
• Lalitha et al. 1984, A&A, 131, 196. Effelsberg 100-m at 4.75 GHz (smoothed to 3': S=4.01±0.57 Jy). ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS
• Landecker et al. 1999, ApJ, 527, 866. DRAO at 408 MHz (3'.5×4'.3) and 1.4 GHz (1'.0×1'.2), including polarisation and HI. ADS
• Foster & Routledge 2003, ApJ, 598, 1005. HI for distance. ADS

Last updated: 11 Jan 2004

G93.7-0.2 CTB 104A, DA 551

• Right Ascension: 21 29 20
• Declination: +50 50
• Size (/arcmin): 80
• Type: S
• Flux density at 1 GHz (/Jy): 65
• Spectral Index: 0.4

Notes: Has been called G93.6-0.2 and G93.7-0.3.

Radio: Distorted, faint shell.

Distance: Assocation with HI features suggests 1.5 kpc.

References:

• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5': S=18.4±1.0 Jy). ADS
• Mantovani et al. 1982, A&A, 105, 176. Effelsberg 100-m at 1.7 GHz (7'.6: S=53.5±5.0 Jy), plus review of flux densities. ADS
• Landecker et al. 1985, AJ, 90, 1082. DRAO at 1.4 GHz (smoothed to 2': S=58±6 Jy). ADS
• Mantovani et al. 1991, A&A, 247, 545. Effelsberg 100-m at 4.75 GHz (smoothed to 3': S=33.5±4.0 Jy), including polarization, plus review of flux densities. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS
• Koralesky et al. 1998, AJ, 116, 1323. VLA search for OH emission. ADS
• Uyaniker et al. 2002, ApJ, 565, 1022. DRAO 1.4 GHz (54"×49"), including HI, and 408 MHz (3'.7×2'.8). ADS
• Uyaniker et al. 2003, ApJ, 585, 785. DRAO at 1.4 GHz (1') including polarisation. ADS

Last updated: 11 Jan 2004

G94.0+1.0 3C434.1

• Right Ascension: 21 24 50
• Declination: +51 53
• Size (/arcmin): 30×25
• Type: S
• Flux density at 1 GHz (/Jy): 15
• Spectral Index: 0.44

Radio: Incomplete shell, in complex region.

References:

• Willis 1973, A&A, 26, 237. NRAO 300-ft at 2.7 GHz (5': S=6.1±0.8 Jy), and VRO 37-m at 1.7 GHz (S=11±3 Jy). ADS
• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5': S=5.8±0.4 Jy). Also NRAO 140-ft at 5 GHz (6'). ADS
• Mantovani et al. 1982, A&A, 105, 176. Effelsberg 100-m at 1.7 GHz (7'.6: S=12.0±1.3 Jy), plus review of flux densities. ADS
• Goss et al. 1984, A&A, 138, 469. WSRT at 610 MHz (smoothed to 100": S=16±1.7 Jy) and Effelsberg 100-m at 4.75 GHz (2'.4: S=7.2±0.5 Jy). ADS
• Landecker et al. 1985, AJ, 90, 1082. DRAO at 1.4 GHz (smoothed to 2': S=16±3 Jy). ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS
• Uyaniker et al. 2003, ApJ, 585, 785. DRAO at 1.4 GHz (1') including polarisation. ADS

Last updated: 11 Jan 2004

G106.3+2.7

• Right Ascension: 22 27 30
• Declination: +60 50
• Size (/arcmin): 60×24
• Type: ?
• Flux density at 1 GHz (/Jy): 6
• Spectral Index: 0.6

Notes: Incorporates the proposed smaller remnant G106.6+2.9.

Radio: Faint extended source, which brighter `head' to NE.

Point sources: Pulsar in `head'.

References:

• Pineault & Joncas 2000, AJ, 120, 3218. DRAO at 408 MHz (3'.9×3'.5: S=10.5±0.3 Jy) and 1.4 GHz (1'.2×1'.0: S=4.9±0.6 Jy), plus HI. ADS
• Halpern et al. 2001, ApJ, 547, 323. X-ray and radio observations of the `head'. ADS
• Halpern et al. 2001, ApJ, 552, L125. Pulsar detection. ADS
• Kothes et al. 2001, ApJ, 560, 236. DRAO at 1.4 GHz, including HI, plus CO and other observations. ADS

Last updated: 26 Nov 2001

G109.1-1.0 CTB 109

• Right Ascension: 23 01 35
• Declination: +58 53
• Size (/arcmin): 28
• Type: S
• Flux density at 1 GHz (/Jy): 20
• Spectral Index: 0.50

Radio: Semicircular shell, with the Molecular cloud S152 is to the immediate W.

X-ray: Incomplete shell, with pulsar at W edge.

Point sources: Long period X-ray pulsar.

Distance: Assocation with HII regions implies 3 kpc.

References:

• Hughes et al. 1981, ApJ, 246, L127. WSRT at 610 MHz (1': S=40±5 Jy) shows bad CLEAN artefacts. ADS
• Blair & Kirshner 1981, Natur, 291, 132. Optical spectra. ADS
• Downes 1983, MNRAS, 203, 695. Effelsberg 100-m at 2.7 GHz (4'.4: S=13.0±1.5 Jy). ADS
• Sofue et al. 1983, PASJ, 35, 447. NRO 45-m at 10.2 GHz (2'.7). ADS
• Hughes et al. 1984, ApJ, 283, 147. WSRT at 610 MHz (20": S=26±3 Jy) 1.4 GHz (10"), DRAO at 1.4 GHz (1'×1'.2: S=16.8±2 Jy) and Algonquin 46-m at 6.5 GHz (4'.5: S=6.7±1 Jy). ADS
• Braun & Strom 1986, A&AS, 63, 345. WSRT HI observations. ADS
• Tatematsu et al. 1987, PASJ, 39, 755. NRO 45-m at 10 GHz (2'.7), plus polarization. ADS
• Tatematsu et al. 1987, A&A, 184, 279. CO observations of the surroundings (2'.7). ADS
• Hanson et al. 1988, A&A, 195, 114. EXOSAT of pulsar. ADS
• Morini et al. 1988, ApJ, 333, 777. EXOSAT observations. ADS
• Koyama et al. 1989, PASJ, 41, 461. X-ray observations of pulsar. ADS
• Coe et al. 1989, MNRAS, 238, 649. IRAS observations of surroundings. ADS
• Green 1989, MNRAS, 238, 737. OH observations. ADS
• Tatematsu et al. 1990, ApJ, 351, 157. CO of surroundings, plus X-ray observations. ADS
• Davies & Coe 1991, MNRAS, 249, 313. Optical and IR observations near pulsar. ADS
• Hurford & Fesen 1995, MNRAS, 277, 549. ROSAT imaging. ADS
• Rho & Petre 1997, ApJ, 484, 828. ROSAT observations. ADS
• Parmar et al. 1998, A&A, 330, 175. X-ray observations. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS
• Koralesky et al. 1998, AJ, 116, 1323. VLA search for OH emission. ADS
• Patel et al. 2001, ApJ, 563, L45. Chandra observations of pulsar. ADS
• Kothes et al. 2002, ApJ, 576, 169. DRAO at 1.4 GHz (68"×59"), including HI, plus CO observations. ADS

Last updated: 7 Jan 2004

G111.7-2.1 Cassiopeia A, 3C461

• Right Ascension: 23 23 26
• Declination: +58 48
• Size (/arcmin): 5
• Type: S
• Flux density at 1 GHz (/Jy): 2720
• Spectral Index: 0.77

Notes: Presumably the remnant of a late 17th century SN.

Radio: Bright shell with compact knots and extended plateau of emission.

Optical: Fast knots and quasi-stationary flocculli, with many filaments at large radii, and NE `jet'.

X-ray: Incomplete shell, with hard spectral component, and compact central source.

Distance: Optical expansion, plus proper motions indicate 3.4 kpc.

References:

• Woan & Duffett-Smith 1990, MNRAS, 243, 87. Structure at 81.5 MHz. ADS
• Rees 1990, MNRAS, 243, 637. Flux density decrease at 38 MHz. ADS
• Anderson et al. 1991, ApJ, 373, 146. VLA at 1.4 and 5 GHz (1".3) for spectral variations. ADS
• Reed et al. 1995, ApJ, 440, 706. Optical spectra, for 3-d structure. ADS
• Anderson et al. 1995, ApJ, 441, 300. VLA at 1.4 GHz and 4.8 GHz (both 1".3), for polarization studies. ADS
• Anderson & Rudnick 1995, ApJ, 441, 307. VLA at 1.4 GHz and 4.8 GHz, for proper motion studies. ADS
• Predehl & Schmitt 1995, A&A, 293, 889. ROSAT of dust scattered halo. ADS
• Lawrence et al. 1995, AJ, 109, 2635. Optical imaging spectroscopy. ADS
• Kassim et al. 1995, ApJ, 455, L59. VLA at 74 (25") and 332 MHz (6"), including spectral index comparisons. ADS
• Anderson & Rudnick 1996, ApJ, 456, 234. VLA for spectral index comparisons. ADS
• Agafanov 1996, A&A, 306, 578. Flux density decrease at 102 MHz. ADS
• Vink et al. 1996, A&A, 307, L41. ASCA spectrum. ADS
• Lagage et al. 1996, A&A, 315, L273. ISO observations. ADS
• Keohane et al. 1996, ApJ, 466, 309. Radio and X-ray comparison. ADS
• Hurford & Fesen 1996, ApJ, 469, 246. Optical spectroscopy and reddening studies. ADS
• Fesen & Gunderson 1996, ApJ, 470, 967. Optical observations of NE `jet'. ADS
• Schwarz et al. 1997, A&AS, 123, 43. WSRT at 1.4 GHz (30") for HI absorption. ADS
• Reynoso et al. 1997, A&A, 317, 203. VLA at 1.4 GHz (11"×14") for HI absorption. ADS
• Dupraz et al. 1997, A&A, 324, 683. gamma-ray line detection. ADS
• Koralesky et al. 1998, AJ, 116, 1323. VLA search for OH emission. ADS
• Vink et al. 1998, A&A, 339, 201. Comparison of ROSAT and Einstein images for expansion studies. ADS
• Keohane et al. 1998, ApJ, 503, L175. Deep ROSAT image, and comparison with radio. ADS
• Koralesky et al. 1998, ApJ, 505, L27. Comparison of ROSAT and Einstein images for expansion studies. ADS
• Wright et al. 1999, ApJ, 518, 284. BIMA at 83 GHz (6".5×6".2) at 28 GHz, for comparison with other radio images for spectral index studies. ADS
• Arendt et al. 1999, ApJ, 521, 234. ISO observations. ADS
• O'Sullivan & Green 1999, MNRAS, 303, 575. Flux density changes at 13.5, 15.5 and 16.5 GHz. ADS
• Agüeros & Green 1999, MNRAS, 305, 957. CLFST at 151 MHz for bulk expansion studies. ADS
• Mason et al. 1999, AJ, 118, 2908. Flux density at 32 GHz (S=194±5 Jy). ADS
• Vink et al. 1999, A&A, 344, 289. X-ray line and continuum observations. ADS
• Liszt & Lucas 1999, A&A, 347, 258. NRAO 12-m at 86 GHz (72": S=101±3.3 Jy) and 140 GHz (44": S=69.6±6.3 Jy), plus CO observations. ADS
• Douvion et al. 1999, A&A, 352, L111. ISO observations. ADS
• Hughes et al. 2000, ApJ, 528, L109. Chandra observations. ADS
• Reichart & Stephens 2000, ApJ, 537, 904. Flux density changes at 1405 MHz. ADS
• Hwang et al. 2000, ApJ, 537, L119. Chandra imaging, including lines. ADS
• Chakrabarty et al. 2001, ApJ, 548, 800. Chandra observations, including central compact source. ADS
• Ryan et al. 2001, ApJ, 548, 811. Optical limits in compact central source. ADS
• Gotthelf et al. 2001, ApJ, 552, L39. Chandra observations, showing outer shock. ADS
• Kaplan et al. 2001, ApJ, 558, 270. Search for near-IR counterpart to central source. ADS
• Vink et al. 2001, ApJ, 560, L79. BeppoSAX X-ray line observations. ADS
• Fesen 2001, ApJS, 133, 161. Optical imaging and spectroscopy. ADS
• Bleeker et al. 2001, A&A, 365, L225. XMM-Newton observations. ADS
• Maccarone et al. 2001, A&A, 368, 267. BeppoSAX observations. ADS
• Douvion et al. 2001, A&A, 369, 589. ISO observations. ADS
• Aharonian et al. 2001, A&A, 370, 112. High energy gamma-ray emission detection. ADS
• Gerardy & Fesen 2001, AJ, 121, 2781. IR spectroscopy and imaging. ADS
• Thorstensen et al. 2001, AJ, 122, 297. Optical expansion studies. ADS
• Hwang et al. 2001, ApJ, 560, L175. Chandra observations of Doppler shifted lines. ADS
• Fesen et al. 2001, AJ, 122, 2644. HST observations. ADS
• Willingale et al. 2002, A&A, 381, 1039. XMM-Newton observations. ADS
• Mereghetti et al. 2002, ApJ, 569, 275. XMM-Newton observations of central source. ADS
• Reynoso & Goss 2002, ApJ, 575, 871. VLA at 5 GHz (6".4×6".0) for H₂CO absorption studies. ADS
• Dunne et al. 2003, Natur, 424, 285. Sub-mm dust observations. ADS
• Rho et al. 2003, ApJ, 592, 299. IR observations. ADS
• Laming & Hwang 2003, ApJ, 597, 347. Chandra spectroscopy. ADS
• DeLaney & Rudnick 2003, ApJ, 589, 818. Chandra expansion studies. ADS
• Jones et al. 2003, ApJ, 587, 227. 2.2 micron polarisation. ADS

Last updated: 23 Jan 2004

G114.3+0.3

• Right Ascension: 23 37 00
• Declination: +61 55
• Size (/arcmin): 90×55
• Type: S
• Flux density at 1 GHz (/Jy): 6?
• Spectral Index: 0.3?

Radio: Shell, with HII region S165 within the boundary of the remnant.

Optical: Faint emission in centre and to S.

Distance: Possible association with HI features suggests 3.0-3.8 kpc.

Point sources: Pulsar near centre of remnant.

References:

• Reich & Braunsfurth 1981, A&A, 99, 17. Effelsberg 100-m at 2.7 GHz (4'.4: S=3.6 Jy) and S_{1.4 GHz}=4.4 Jy from 1.4 GHz survey data, plus HI from Maryland-Green Bank survey. ADS
• Kulkarni et al. 1993, Natur, 362, 135. Pulsar association. ADS
• Fürst et al. 1993, A&A, 276, 470. Pulsar association. ADS
• Becker et al. 1996, A&A, 306, 464. ROSAT of pulsar. ADS
• Fesen et al. 1997, AJ, 113, 767. Optical observations. ADS
• Mavromatakis et al. 2002, A&A, 383, 1011. Optical observations. ADS

Last updated: 7 Jan 2004

G116.5+1.1

• Right Ascension: 23 53 40
• Declination: +63 15
• Size (/arcmin): 80×60
• Type: S
• Flux density at 1 GHz (/Jy): 11?
• Spectral Index: 0.8?

Radio: Distinct shell, with high polarization.

Distance: Possible association with HI features suggests 3.6-5.2 kpc.

References:

• Reich & Braunsfurth 1981, A&A, 99, 17. Effelsberg 100-m at 2.7 GHz (4'.4: S=4.7±0.4 Jy) and S_{1.4 GHz}=8.0±0.8 Jy from 1.4 GHz survey data, plus HI from Maryland-Green Bank survey. ADS
• Fesen et al. 1997, AJ, 113, 767. Optical observations. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS

Last updated: 13 Aug 1998

G116.9+0.2 CTB 1

• Right Ascension: 23 59 10
• Declination: +62 26
• Size (/arcmin): 34
• Type: S
• Flux density at 1 GHz (/Jy): 9?
• Spectral Index: 0.5?

Notes: Has been called G117.3+0.1 and G116.9+0.1.

Radio: Incomplete shell.

Optical: Filaments on sky survey.

X-ray: Centrally brightened, with NE `breakout'.

Point sources: Pulsar to NE.

Distance: Possible association with HI features suggests 2.8-4.0 kpc, mean optical velocity suggests 2.7 kpc.

References:

• Willis 1973, A&A, 26, 237. NRAO 300-ft at 2.7 GHz (5': S=3.9±1.0 Jy), and VRO 37-m at 1.7 GHz (S=5.5±2.0 Jy), plus review of flux densities. ADS
• van den Bergh et al. 1973, ApJS, 26, 19. Optical. ADS
• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5': S=4.2±0.2 Jy). ADS
• Angerhofer et al. 1977, A&A, 55, 11. NRAO 140-ft at 5 GHz (6'.8: S=3.0±0.3 Jy). ADS
• Dickel & Willis 1980, A&A, 85, 55. WSRT at 610 MHz (56"×64") and 1.4 GHz (22"×25"). ADS
• Reich & Braunsfurth 1981, A&A, 99, 17. Effelsberg 100-m at 2.7 GHz (4'.4: S=4.8±0.4 Jy) and S_{1.4 GHz}=7.8±0.8 Jy from 1.4 GHz survey data, plus HI from Maryland-Green Bank survey. ADS
• Lozinskaya 1981, SvAL, 7, 17. Mean optical velocity. ADS
• Landecker et al. 1982, AJ, 87, 1379. DRAO at 1.42 GHz and HI (2'×2'.3: S=8.3±0.5 Jy), plus review of flux densities. ADS
• Fesen et al. 1985, ApJ, 292, 29. Optical spectra. ADS
• Hailey & Craig 1994, ApJ, 434, 635. Optical spectroscopy. ADS
• Hailey & Craig 1995, ApJ, 455, L151. ROSAT of nearby pulsar. ADS
• Fesen et al. 1997, AJ, 113, 767. Optical observations. ADS
• Craig et al. 1997, ApJ, 488, 307. ROSAT observations. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS

Last updated: 13 Aug 1998

G119.5+10.2 CTA 1

• Right Ascension: 00 06 40
• Declination: +72 45
• Size (/arcmin): 90?
• Type: S
• Flux density at 1 GHz (/Jy): 36
• Spectral Index: 0.6

Notes: Has been called G119.5+10.3.

Radio: Incomplete shell, with `breakout' to NW.

Optical: Faint diffuse nebulosities.

X-ray: Centrally brightened.

Point sources: Compact, central X-/gamma-ray source.

References:

• Sieber et al. 1979, A&A, 74, 361. Effelsberg 100-m at 2.7 GHz (4'.4: S=23.6±2.8 Jy). ADS
• Sieber et al. 1981, A&A, 103, 393. Effelsberg 100-m at 2.7 GHz and 1.7 GHz (7'.6: S=31.6±2.5 Jy), and 6C at 151 MHz (4': S=62.6±6 Jy). ADS
• Fesen et al. 1981, ApJ, 247, 148. Optical, including spectra. ADS
• Fesen et al. 1983, ApJS, 51, 337. Deep [OIII] imagery. ADS
• Seward 1990, ApJS, 73, 781. Einstein observations. ADS
• Simonetti 1992, ApJ, 386, 170. VLA observations of background sources for rotation measure studies. ADS
• Pineault et al. 1993, AJ, 105, 1060. DRAO at 1.4 GHz (1': S=34±4 Jy), plus HI and IRAS. ADS
• Seward et al. 1995, ApJ, 453, 284. ROSAT observations. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Slane et al. 1997, ApJ, 485, 221. ASCA and ROSAT observations. ADS
• Pineault et al. 1997, A&A, 324, 1152. DRAO at 408 MHz (3'.5) and 1.4 GHz (1'.0). ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS
• Brazier et al. 1998, MNRAS, 295, 819. Studies of central, compact gamma-ray source. ADS
• Mavromatakis et al. 2000, A&A, 353, 371. Optical imagery. ADS
• Roberts et al. 2001, ApJS, 133, 451. ASCA observations. ADS

Last updated: 8 Nov 2001

G120.1+1.4 Tycho, 3C10, SN1572

• Right Ascension: 00 25 18
• Declination: +64 09
• Size (/arcmin): 8
• Type: S
• Flux density at 1 GHz (/Jy): 56
• Spectral Index: 0.61

Notes: This is the remnant of the Tycho's SN of AD1572.

Radio: Shell, brightest to the NE.

Optical: Faint filaments/knots to the NNW, NE and E.

X-ray: Shell, brighter to the NE.

Point sources: Faint radio source near centre of the remnant, thought to be extragalactic.

Distance: HI absorption gives 2-5 kpc, optical proper motion and shock velocity gives 2.4 kpc.

References:

• Duin & Strom 1975, A&A, 39, 33. WSRT at 610 MHz (57"×64") and 5 GHz (7"×8"). ADS
• Klein et al. 1979, A&A, 76, 120. Effelsberg 100-m at 10.7 GHz (1'.2: S=13.1±0.8 Jy), plus review of flux densities. ADS
• Strom et al. 1982, MNRAS, 200, 473. WSRT at 1415 MHz (27"×31") from 1971 and 1979, for expansion. ADS
• Dickel et al. 1982, ApJ, 257, 145. Comparison of Radio, X-ray and Optical. ADS
• Reid et al. 1982, ApJ, 261, 485. Einstein observations. ADS
• Seward et al. 1983, ApJ, 266, 287. Einstein observations. ADS
• Tan & Gull 1985, MNRAS, 216, 949. 5km at 2.7 GHz (4") from 1980 and 1983, and One-Mile Telescope at 1.4 GHz (23") from 1965 and 1980, for expansion. ADS
• Albinson et al. 1986, MNRAS, 219, 427. HI observations. ADS
• Green & Gull 1987, MNRAS, 224, 1055. VLA HI absorption observations towards central radio source. ADS
• Smith et al. 1988, ApJ, 325, 288. EXOSAT spectrum and image (smoothed to 13"). ADS
• Dickel et al. 1991, AJ, 101, 2151. VLA at 1.4 and 5 GHz (1".5). ADS
• Wood et al. 1992, AJ, 103, 1338. VLA at 5 GHz (1".5) polarization studies. ADS
• Fink et al. 1994, A&A, 283, 635. X-ray spectra. ADS
• Vancura et al. 1995, ApJ, 441, 680. X-ray spectra and ROSAT image. ADS
• Predehl & Schmitt 1995, A&A, 293, 889. ROSAT of dust scattered halo. ADS
• Schwarz et al. 1995, A&A, 299, 193. WSRT and Effelsberg 100-m at 1.4 GHz (50"), and VLA at 1.4 GHz (13"), for neutral hydrogen studies. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Hwang & Gotthelf 1997, ApJ, 475, 665. ASCA observations. ADS
• Reynoso et al. 1997, ApJ, 491, 816. VLA at 1.4 GHz (1".4×1".5) from 1984 and 1994 for expansion studies. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS
• Reynoso et al. 1999, AJ, 117, 1827. VLA at 1.4 GHz (13"), for HI studies. ADS
• Katz-Stone et al. 2000, ApJ, 529, 453. VLA at 333 MHz and 1.4 GHz (9".5×7".7), for spectral index studies. ADS
• Ghavamian et al. 2000, ApJ, 535, 266. Optical observations of shock precursors. ADS
• Hughes 2000, ApJ, 545, L53. ROSAT X-ray expansion. ADS
• Decourchelle et al. 2001, A&A, 365, L218. XMM-Newton observations. ADS
• Ghavamian et al. 2001, ApJ, 547, 995. Optical spectroscopy. ADS
• Douvion et al. 2001, A&A, 373, 281. ISO observations. ADS
• Aharonian et al. 2001, A&A, 373, 292. Upper limit on high energy gamma-rays. ADS
• Hwang et al. 2002, ApJ, 581, 1101. Chandra observations. ADS

Last updated: 7 Jan 2004

G126.2+1.6

• Right Ascension: 01 22 00
• Declination: +64 15
• Size (/arcmin): 70
• Type: S?
• Flux density at 1 GHz (/Jy): 7
• Spectral Index: varies

Radio: Poorly defined shell.

Optical: Filaments detected.

References:

• Reich et al. 1979, A&A, 78, L13. Effelsberg 100-m at 1.4 GHz (9': S=6.8±0.7 Jy) and 2.7 GHz (4'.4: S=3.9±0.4 Jy). ADS
• Blair et al. 1980, ApJ, 242, 592. Optical detection and spectra. ADS
• Rosado 1982, RMxAA, 5, 127. Optical spectra. ADS
• Fesen et al. 1983, ApJS, 51, 337. Deep [OIII] imagery. ADS
• Fürst et al. 1984, A&A, 133, 11. Effelsberg 100-m at 2.7 GHz (4'.4) and 4.8 GHz (2'.6). ADS
• Joncas et al. 1989, A&A, 219, 303. DRAO at 408 MHz (3'.5×3'.9: S=12±2.5 Jy) and part at 1.4 GHz (1'.1×1'.0), plus review of flux densities. ADS
• Xilouris et al. 1993, A&A, 270, 393. Optical imaging. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS
• Reich et al. 2003, A&A, 408, 961. Effelsberg 100-m at 863 MHz (14'.5: S=6.1±1.6 Jy). ADS

Last updated: 7 Jan 2004

G127.1+0.5 R5

• Right Ascension: 01 28 20
• Declination: +63 10
• Size (/arcmin): 45
• Type: S
• Flux density at 1 GHz (/Jy): 13
• Spectral Index: 0.6

Notes: Has been called G127.3+0.7.

Radio: Distinct shell, with bright central source.

Point sources: Flat radio spectrum (extragalactic) source at centre of remnant.

Optical: Detected.

Distance: 1.2-1.3 kpc if associated with NGC559.

References:

• Caswell 1977, MNRAS, 181, 789. Half-Mile Telescope at 1.42 GHz (3'.5×3'.9), plus other observations of central source. ADS
• Salter et al. 1978, A&A, 66, 77. Effelsberg 100-m at 2.7 GHz (4'.4), plus 5 and 8.7 GHz of the central source. ADS
• Pauls 1977, A&A, 59, L13. Effelsberg 100-m at 1.4 GHz (9': S=8±1 Jy). ADS
• Reich et al. 1979, A&A, 78, L13. Effelsberg 100-m at 1.4 GHz (9': S=10.8±1.3 Jy). ADS
• Pauls et al. 1982, A&A, 112, 120. WSRT at 610 MHz (56"×62") and HI absorption to the point source with the VLA. ADS
• Geldzahler & Shaffer 1982, ApJ, 260, L69. Observations of central source. ADS
• Fürst et al. 1984, A&A, 133, 11. Effelsberg 100-m at 2.7 GHz (4'.4) and 4.8 GHz (2'.6). ADS
• Goss & van Gorkom 1984, JApA, 5, 425. WSRT HI absorption of central source. ADS
• Joncas et al. 1989, A&A, 219, 303. DRAO at 408 MHz (3'.5×3'.9: S=17.9±2.0 Jy) and 1.4 GHz (1'.13×1'.0: S=10.1±0.8 Jy), plus review of flux densities. ADS
• Xilouris et al. 1993, A&A, 270, 393. Optical imaging. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS
• Reich et al. 2003, A&A, 408, 961. Effelsberg 100-m at 863 MHz (14'.5: S=14.6±0.8 Jy). ADS

Last updated: 7 Jan 2004

G130.7+3.1 3C58, SN1181

• Right Ascension: 02 05 41
• Declination: +64 49
• Size (/arcmin): 9×5
• Type: F
• Flux density at 1 GHz (/Jy): 33
• Spectral Index: 0.10

Notes: This is the remnant of the SN of AD1181.

Radio: Filled-centre, highly polarized, with high frequency turnover.

Optical: Faint filaments.

X-ray: Centrally brightened with power-law spectrum.

Point sources: Central pulsar.

Distance: HI absorption indicates 3.2 kpc.

References:

• Green et al. 1975, A&A, 44, 187. Effelsberg 100-m at 15.0 GHz (58": S=26.7±0.5 Jy). ADS
• Wilson & Weiler 1976, A&A, 49, 357. WSRT at 610 MHz (58"×64"), 1.4 GHz (24"×27") and 5 GHz (7"×8"). ADS
• van den Bergh 1978, ApJ, 220, L9. Optical observations. ADS
• Becker et al. 1982, ApJ, 255, 557. X-ray observations. ADS
• Green & Gull 1982, Natur, 299, 606. HI absorption distance. ADS
• Fesen 1983, ApJ, 270, L53. Optical spectra. ADS
• Reynolds & Aller 1985, AJ, 90, 2312. VLA at 1.4 GHz (2'), for limits of shell. ADS
• Davelaar et al. 1986, ApJ, 300, L59. EXOSAT spectrum. ADS
• Green 1986, MNRAS, 218, 533. CLFST at 151 MHz (1'.2×1'.3: S=36±4 Jy), 5km at 2.7 GHz (4"), plus Einstein observations for limit on shell. ADS
• Green 1987, MNRAS, 225, 11P. Flux density increase at 408 MHz. ADS
• Morsi & Reich 1987, A&AS, 69, 533. Effelsberg 100-m at 32 GHz (26".5: S=24.2±1.4 Jy). ADS
• Reynolds & Aller 1988, ApJ, 327, 845. VLA at 1.4 (2".4) and 4.9 GHz (2".5). ADS
• Salter et al. 1989, ApJ, 338, 171. NRAO 12-m at 84.2 GHz (90": S=15.0±2.0 Jy), plus review of flux densities. ADS
• Asaoka & Koyama 1990, PASJ, 42, 625. Ginga X-ray spectrum. ADS
• Green & Scheuer 1992, MNRAS, 258, 833. IRAS upper limits. ADS
• Roberts et al. 1993, A&A, 274, 427. HI absorption. ADS
• Wallace et al. 1994, A&A, 286, 565. HI of surroundings. ADS
• Helfand et al. 1995, ApJ, 453, 741. ROSAT observations. ADS
• Torii et al. 2000, PASJ, 52, 875. ASCA observations. ADS
• Bietenholz et al. 2001, ApJ, 560, 772. VLA at 74 MHz (26": S=33.6 Jy) and 327 MHz (8".2: S=33.9 Jy), for spectral index studies, and comparison with earlier observations for expansion studies. ADS
• Bocchino et al. 2001, A&A, 369, 1078. XMM-Newton observations. ADS
• Murray et al. 2002, ApJ, 568, 226. Chandra pulsar detection. ADS
• Camilo et al. 2002, ApJ, 571, L41. Pulsar detection in radio. ADS
• Slane et al. 2002, ApJ, 571, L45. Chandra observations. ADS

Last updated: 7 Jan 2004

G132.7+1.3 HB3

• Right Ascension: 02 17 40
• Declination: +62 45
• Size (/arcmin): 80
• Type: S
• Flux density at 1 GHz (/Jy): 45
• Spectral Index: 0.6

Notes: Has been called G132.4+2.2.

Radio: Faint shell, adjacent to W3/4/5 complex.

Optical: Complete, filamentary shell, shock excited spectra.

X-ray: Partial shell.

Point sources: Pulsar nearby.

Distance: Interaction with surroundings suggests 2.2 kpc.

References:

• van den Bergh et al. 1973, ApJS, 26, 19. Optical. ADS
• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5': S=33.8±7.0 Jy). ADS
• d'Odorico & Sabbadin 1977, A&AS, 28, 439. Optical spectra. ADS
• Read 1981, MNRAS, 194, 863. 6C at 151 MHz (4'.4) and Half-Mile Telescope at 1.4 GHz (2') showing HI shell. ADS
• Lozinskaya 1981, SvAL, 7, 17. Mean optical velocity. ADS
• Fesen & Gull 1983, PASP, 95, 196. Optical image. ADS
• Leahy et al. 1985, ApJ, 294, 183. Einstein observations. ADS
• Landecker et al. 1987, AJ, 94, 111. DRAO at 408 MHz (3'.5×4': S=75±15 Jy), plus review of flux densities. ADS
• Routledge et al. 1991, A&A, 247, 529. DRAO at 1.4 GHz (1'.0×1'.1) for HI, plus CO observations. ADS
• Fesen et al. 1995, AJ, 110, 2876. Optical imaging and spectroscopy, DRAO at 408 MHz (3'.5×4') and 1.4 GHz (1'.0×1'.1). ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS
• Koralesky et al. 1998, AJ, 116, 1323. VLA detection of compact OH emission. ADS
• Reich et al. 2003, A&A, 408, 961. Effelsberg 100-m at 863 MHz (14'.5: S=51.5±3.5 Jy). ADS

Last updated: 7 Jan 2004

G156.2+5.7

• Right Ascension: 04 58 40
• Declination: +51 50
• Size (/arcmin): 110
• Type: S
• Flux density at 1 GHz (/Jy): 5
• Spectral Index: 0.5

Radio: Faint shell.

X-ray: Faint shell.

References:

• Pfeffermann et al. 1991, A&A, 246, L28. ROSAT detection. ADS
• Reich et al. 1992, A&A, 256, 214. Effelsberg 100-m at 1.4 (9': S=4.2±1.0 Jy) and 2.7 GHz (4'.3: S=3.0±1.0 Jy), plus HI and IRAS. ADS
• Yamauchi et al. 1993, PASJ, 45, 795. Hard X-ray observations. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS
• Yamauchi et al. 1999, PASJ, 51, 13. ASCA observations of some regions. ADS

Last updated: 13 Aug 2000

G160.9+2.6 HB9

• Right Ascension: 05 01 00
• Declination: +46 40
• Size (/arcmin): 140×120
• Type: S
• Flux density at 1 GHz (/Jy): 110
• Spectral Index: 0.6

Notes: Has been called G160.5+2.8 and G160.4+2.8.

Radio: Large, filamentary shell.

Optical: Incomplete shell.

X-ray: Centrally brightened.

Point sources: Pulsar within boundary of the remnant, plus several nearby compact radio sources.

Distance: Various observations suggests less than 4 kpc.

References:

• d'Odorico & Sabbadin 1977, A&AS, 28, 439. Optical spectra. ADS
• Damashek et al. 1978, ApJ, 225, L31. Pulsar. ADS
• Lozinskaya 1981, SvAL, 7, 17. Mean optical velocity. ADS
• Dwarakanath et al. 1982, JApA, 3, 207. Radio observations at 34.5 MHz (26'×40': S=750±150 Jy), plus review of flux densities. ADS
• van Gorkom et al. 1982, MNRAS, 198, 757. WSRT HI absorption to nearby point source. ADS
• Seaquist & Gilmore 1982, AJ, 87, 378. VLA observations of nearby source. ADS
• Leahy 1988, ApJ, 322, 917. Einstein observations. ADS
• Leahy & Roger, 1991, AJ, 101, 1033. DRAO at 408 MHz (3'.5×4'.8) and 1.4 GHz (1'.0×1'.4), including HI and discussion of distance. ADS
• Yamauchi & Koyama 1993, PASJ, 45, 545. Hard X-ray observations. ADS
• Leahy & Aschenbach 1995, A&A, 293, 853. ROSAT observations. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Leahy et al. 1998, A&A, 339, 601. Miyun at 232 MHz (3'.8×5'.2), CLFST at 151 MHz (4'.2×5'.8) and Effelsberg 100-m at 4.7 GHz (2'.5) for spectral index studies. ADS
• Roger et al. 1999, A&AS, 137, 7. 22 MHz flux density (S=1130±340 Jy). ADS
• Reich et al. 2003, A&A, 408, 961. Effelsberg 100-m at 863 MHz (14'.5: S=91±3 Jy). ADS

Last updated: 7 Jan 2004

G166.0+4.3 VRO 42.05.01

• Right Ascension: 05 26 30
• Declination: +42 56
• Size (/arcmin): 55×35
• Type: S
• Flux density at 1 GHz (/Jy): 7?
• Spectral Index: 0.4?

Radio: Two arcs of strikingly different radii.

Optical: Nearly complete ring.

X-ray: Predominantly in SW.

Distance: HI indicates 4.5 kpc.

References:

• van den Bergh et al. 1973, ApJS, 26, 19. Optical. ADS
• Willis 1973, A&A, 26, 237. NRAO 300-ft at 2.7 GHz (5': S=5.2±1.0 Jy). ADS
• Lozinskaya 1979, AuJPh, 32, 113. Halpha interferometry. ADS
• Landecker et al. 1982, ApJ, 261, L41. DRAO at 1.4 GHz (1'.0×1'.4), plus review of flux densities. ADS
• Fesen et al. 1983, ApJS, 51, 337. Deep [OIII] imagery. ADS
• Pineault et al. 1985, A&A, 151, 52. VLA at 1.4 GHz (16"×20") of part of remnant, and optical. ADS
• Pineault et al. 1987, ApJ, 315, 580. DRAO and VLA combined at 1.4 GHz (20"). ADS
• Fesen et al. 1985, ApJ, 292, 29. Optical spectra. ADS
• Braun & Strom 1986, A&AS, 63, 345. WSRT HI Observations. ADS
• Landecker et al. 1989, MNRAS, 237, 277. DRAO at 1.4 GHz (1'.0×1'.4), including HI. ADS
• Burrows & Guo 1994, ApJ, 421, L19. ROSAT images and spectra. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Guo & Burrows 1997, ApJ, 480, L51. ASCA observations. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS

Last updated: 13 Aug 1998

G166.2+2.5 OA 184

• Right Ascension: 05 19 00
• Declination: +41 55
• Size (/arcmin): 90×70
• Type: S
• Flux density at 1 GHz (/Jy): 11
• Spectral Index: 0.5

Radio: Large, faint shell.

Optical: Nearly complete ring.

Distance: HI indicates 8±2 kpc.

References:

• Willis 1973, A&A, 26, 237. NRAO 300-ft at 2.7 GHz (5': S=6.0±2.2 Jy). ADS
• Dickel & DeNoyer 1975, AJ, 80, 437. Arecibo 111 MHz. ADS
• Lozinskaya 1981, SvAL, 7, 17. Mean optical velocity. ADS
• Fesen et al. 1985, ApJ, 292, 29. Optical spectra. ADS
• Routledge et al. 1986, MNRAS, 221, 809. DRAO at 1.4 GHz (1'×1'.4: S=9.0±0.5 Jy) including HI, plus review of flux densities. ADS
• Kim et al. 1988, AJ, 96, 704. VLA of background sources for magnetic field structure of the remnant. ADS
• Leahy & Marshall 1988, MNRAS, 235, 805. IRAS observations. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS

Last updated: 13 Aug 1998

G179.0+2.6

• Right Ascension: 05 53 40
• Declination: +31 05
• Size (/arcmin): 70
• Type: S?
• Flux density at 1 GHz (/Jy): 7
• Spectral Index: 0.4

Radio: Thick shell, with background extragalactic sources near centre.

References:

• Fürst & Reich 1986, A&A, 154, 303. Effelsberg 100-m at 1.4 (9'.4), 2.7 (4'.3) and 4.75 GHz (2'.4). ADS
• Fürst et al. 1989, A&A, 223, 66. Observations of central, extragalactic source. ADS
• Lorimer et al. 1998, A&A, 331, 1002. Pulsar search. ADS

Last updated: 13 Aug 1998