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Title:
Expansion of the Supernova Remnant RCW 103
Authors:
Carter, L. M.; Dickel, J. R.; Bomans, D. J.
Publication:
Publications of the Astronomical Society of the Pacific, v.109, p.990-997 (PASP Homepage)
Publication Date:
09/1997
Origin:
PASP
DOI:
10.1086/133971
Bibliographic Code:
1997PASP..109..990C

Abstract

A new CCD image of the supernova remnant RCW\,103 was taken in 1995 to compare with a photographic plate taken in 1970. We calculated the proper-motion expansion of the outer edge and several filaments by comparing radial slices through each of the data sets. The mean expansion rate of the outer edge is 1\farcs 8~$\pm$~0\farcs 2 per 25 years, or about 1100 km sec$^{-1}$. At this velocity the remnant is most likely around 2000 years old. In addition, it must have made the transition from the double-shock phase of evolution to the point-blast phase fairly recently for the initial energy of the supernova explosion to be within a reasonable rang. (SECTION: Interstellar Medium and Nebulae)

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