20 cm VLA radio-continuum study of M31 - images and point source catalogues DR2: Extraction of a supernova remnant sample

Abstract

We present Data Release 2 of the Point Source Catalogue created from a series of previously constructed radio-continuum images of M31 at λ=20 cm (ν=1.4 GHz) from archived VLA observations. In total, we identify a collection of 916 unique discrete radio sources across the field of M31. Comparing these detected sources to those listed by Gelfand et al. (2004) at λ=92 cm, the spectral index of 98 sources has been derived. The majority (73%) of these sources exhibit a spectral index of α