The Dust Mass of Supernova Remnants in M31

Abstract The dust temperature and mass of the supernova remnants (SNRs) in M31 are estimated by fitting infrared spectral energy distribution calculated from images Spitzer/IRAC4 MIPS24, Herschel/PACS70, 100, 160, Herschel/SPIRE 250 350 μ m bands. Twenty SNRs with relatively reliable photometry exhibit an average 20.1 − 1.5 + 1.8 K, which is higher than surrounding indicating heating effect explosion. these ranges about 100 to 800 M ⊙ , much bigger Milky Way. On other hand, this yields surface density ${0.10}_{-0.04}^{+0.07}$?> 0.10 0.04 0.07 pc −2 half area, implies that destroyed temperature, radius, thus all demonstrate studied old very likely snowplow or even fade-away phase because limitation far distance observation resolution M31, results can serve as a reference final explosion on dust.