Note: this is an archived version which has been superseded.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

G41.1-0.3 3C397

• Right Ascension: 19 05 08
• Declination: +07 03
• 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.

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

References:

• Kundu et al. 1974, AJ, 79, 1332. NRAO 140-ft at 10 GHz (3') and 5 GHz (6').
• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5': S=21.3±1.2 for both components).
• Caswell et al. 1975, A&A, 45, 239. HI absorption. ADS
• Dickel & DeNoyer 1975, AJ, 80, 437. Arecibo S(430)=82±51, also Algonquin 46-m at 10.6 GHz (3': S=12±2), and Haystack 36-m at 15.5 GHz (2'.3: S=8.5±3.0). ADS
• Caswell et al. 1975, AuJPA, 37, 39. Molonglo at 408 MHz (3': S=29.8) and Parkes 64-m at 5 GHz (4': S=8.7). 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 HRI and IPC observations. ADS
• Morsi & Reich 1987, A&AS, 71, 189. Effelsberg 100-m at 32 GHz (smoothed to 30": S=1.10±0.19). ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (3'.5×3'.6: S=46.3). ADS
• Anderson & Rudnick 1993, ApJ, 408, 514. VLA at 1.45 and 4.89 GHz, for spectral index studies. ADS

Last updated: 27 JUN 1995