Note: this is
an archived version which has been superseded. The current SNR
catalogue is at 
https://www.mrao.cam.ac.uk/surveys/snrs/
G31.5−0.6
ADS: search fulltext or
 title/keyword/abstract
- 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
 - Dokara et al. 2021, A&A, 651, A86. VLA at 4 to 8 GHz (18'': S=0.3 Jy) including polarisation, and Spitzer observations.
ADS
 - Sofue et al. 2021, ApJS, 253, 17. Nobeyama 45-m CO observations (20'') of region.
ADS
 
Last updated: 20 Dec 2022
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