Some statistics of Galactic SNRs

Details Some statistics of Galactic SNRs Some statistics of Galactic SNRs

2005-05-20

arxiv.org/abs/astro-ph/0505428v1

Mem.Soc.Ast.It. 76 (2005) 534-541

Astronomy and Astrophysics

Astrophysics

8 pages, 5 figures; proceedings of a workshop on Stellar End Product, to appear in MmSAI (expected to be 2006, volume 77, numb

Scientific paper

The selection effects applicable to the identification of Galactic supernova remnants (SNRs) at radio wavelengths are discussed. Low surface brightness remnants are missing, as are those with small angular sizes (including young but distant SNRs). Several statistical properties of Galactic SNRs are discussed, including the surface-brightness/diameter (Sigma-D) relation. The wide range of intrinsic properties of Galactic remnants with known distances, and the observational selection effects, means that the Sigma-D relation is of limited use to derive diameters and hence distances for individual SNRs, or for statistical studies.

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