The Nature and Geometry of the Light Echo from SN 2006X
Abstract
We report on the discovery of the geometry producing the light echo emanating from Supernova 2006X, a nearby but underluminous Type Ia in M100 (= NGC 4321). This offers a rare chance to study the environment of a Type Ia supernova. Contrary to previous reports, there is little evidence of a circumstellar component in the light echo morphology or in the light curve of the unresolved SN point source. Instead, the obvious and dominant echo contribution comes from what is probably a relatively thin sheet of material some 26 pc in front of SN 2006X. Of the four known Type Ia light echoes, three show no evidence of a circumstellar echo and the fourth needs to be confirmed. We consider other evidence for circumstellar material around SN Ia, which may be rare.
Keywords
Cite
@article{arxiv.0804.2030,
title = {The Nature and Geometry of the Light Echo from SN 2006X},
author = {Arlin Crotts and David Yourdon},
journal= {arXiv preprint arXiv:0804.2030},
year = {2009}
}
Comments
17 pages, 2 figures, submitted to Astrophysical Journal Letters