Note: this is an archived version which has been superseded.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

G49.2-0.7 (W51)

• Right Ascension: 19 21 30
• Declination: +14 00
• Size (arcmin): 30
• Type: S?
• Flux density at 1 GHz (Jy): 160?
• Spectral Index: 0.3?

Radio: In complex region, parameters uncertain.

X-ray: Elongated east--west.

Distance: HI absorption suggests 4.1 kpc.

References:

• Shaver & Goss 1970, AuJPA, 14, 133. Parkes 64-m at 5 GHz (4').
• Sato 1973, PASJ, 25, 135. HI absorption.
• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5'), S=51.5±3.2, for the non-thermal component, but probably confused.
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6). ADS
• Seward 1990, ApJS, 73, 781. IPC observations. ADS
• Copetti & Schmidt 1991, MNRAS, 250, 127. CLFST at 151 MHz. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.1×3'.5). ADS
• Subrahmanyan & Goss 1995, MNRAS, 275, 755. VLA at 330 MHz (1'.1). ADS
• Koo et al. 1995, ApJ, 447, 211. ROSAT observations. ADS
• Frail et al. 1996, AJ, 111, 1651. OH emission near remnant. ADS

Last updated: 20 AUG 1996