Note: this is an archived version which has been superseded.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

G74.0-8.5 Cygnus Loop

• Right Ascension: 20 49 00
• Declination: +30 30
• Size (arcmin): 230×160
• Type: S
• Flux density at 1 GHz (Jy): 210
• Spectral Index: varies

Radio: Shell, brightest to the NE, with fainter breakout region to S, with spectral variations.

Optical: Large filamentary loop, brightest to the NE, not well defined to the S or W.

X-ray: Shell in soft X-rays.

Point sources: Several compact radio sources within the boundary of the remnant, including CL4.

References:

• Keen et al. 1973, A&A, 28, 197. Effelsberg 100-m at 2.7 GHz (4'.8), NE at 10.7 GHz (1'.25).
• Dickel & Willis 1980, A&A, 85, 55. WSRT at 610 MHz (56"×107") of NE area (NGC6992) only. ADS
• Seaquist & Gilmore 1982, AJ, 87, 378. VLA observations of CL4. ADS
• Fesen et al. 1982, ApJ, 262, 171. Optical spectroscopy. ADS
• Hester et al. 1983, ApJ, 273, 219. Optical imagery. ADS
• Ku et al. 1984, ApJ, 278, 615. IPC and HRI X-ray observations. ADS
• Green 1984, MNRAS, 211, 433. Most of remnant at 408 MHz (80"×160") with OMT. ADS
• Charles et al. 1985, ApJ, 295, 456. IPC observations. ADS
• Braun & Strom 1986, A&A, 164, 208. IRAS observations. ADS
• Straka et al. 1986, ApJ, 306, 266. Radio and optical comparison of NE. VLA at 1.6 GHz (4".7) plus optical. ADS
• Raymond et al. 1988, ApJ, 324, 869. Detailed optical study of filaments. ADS
• Ballet et al. 1989, A&A, 211, 217. [FeX] and [FeXIV] spectroscopy. ADS
• Ballet & Rothenflug 1989, A&A, 218, 277. EXOSAT observations. ADS
• Green 1990, AJ, 100, 1927. DRAO at 408 MHz (3'.3×6'.7) for spectral index study, plus X-ray and optical. ADS
• Graham et al. 1991, AJ, 101, 175. Shocked molecular H outside rim in NE. ADS
• Shull & Clarke 1991, PASP, 103, 811. Optical spectroscopy of nearside filaments. ADS
• Blair et al. 1991, ApJ, 374, 202. Far UV mapping. ADS
• Blair et al. 1991, ApJ, 379, L33. UV spectroscopy. ADS
• Greidanus & Strom 1992, A&A, 257, 265. Optical kinematics. ADS
• Shull & Hippelein 1992, ApJ, 383, 714. Optical kinematics and proper motion. ADS
• Fesen et al. 1992, AJ, 104, 719. Halpha imagery. ADS
• Cornett et al. 1992, ApJ, 395, L9. UV imagery. ADS
• Long et al. 1992, ApJ, 400, 214. Optical of Balmer dominated filament. ADS
• Arendt et al. 1992, ApJ, 400, 562. IRAS observations. ADS
• Vancura et al. 1993, ApJ, 417, 663. Far UV observations. ADS
• Hester et al. 1994, ApJ, 420, 721. Halpha, [OIII] and other optical observations of Balmer dominated filaments in NE. ADS
• Miyata et al. 1994, PASJ, 46, L101. X-ray observations of NE. ADS
• Graham et al. 1995, ApJ, 444, 787. X-ray and optical studies of interaction with surroundings. ADS
• Sauvageot & Decourchelle 1995, A&A, 296, 201. [FeX] and [FeXIV] observations. ADS

Last updated: 31 JUL 1995