Constraints on the Progenitor of Cassiopeia A
Astrophysics
2009-11-13 v1
Abstract
We compare a suite of 3D explosion calculations and stellar models incorporating advanced physics with observational constraints on the progenitor of Cassiopeia A. We consider binary and single stars from 16 to 40 solar masses with a range of explosion energies and geometries. The parameter space allowed by observations of nitrogen rich high velocity ejecta, ejecta mass, compact remnant mass, and 44Ti and 56Ni abundances individually and as an ensemble is considered. A progenitor of 15-25 solar masses which loses its hydrogen envelope to a binary interaction and undergoes an energetic explosion can match all the observational constraints.
Cite
@article{arxiv.astro-ph/0511806,
title = {Constraints on the Progenitor of Cassiopeia A},
author = {Patrick A. Young and Chris L. Fryer and Aimee Hungerford and David Arnett and Gabriel Rockefeller and F. X. Timmes and Benedict Voit and Casey Meakin and Kristoffer A. Eriksen},
journal= {arXiv preprint arXiv:astro-ph/0511806},
year = {2009}
}
Comments
31 pages, 4 figures, accepted for publication to the Astrophysical Journal