期刊
ASTROPHYSICAL JOURNAL
卷 640, 期 2, 页码 891-900出版社
IOP PUBLISHING LTD
DOI: 10.1086/500108
关键词
hydrodynamics; nuclear reactions, nucleosynthesis, abundances; stars : evolution; supernova remnants; supernovae : individual (Cassiopeia A)
We compare a suite of three-dimensional 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 M-circle dot 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 Ti-44 and Ni-56 abundances individually and as an ensemble is considered. A progenitor of 15-25 M-circle dot that loses its hydrogen envelope to a binary interaction and undergoes an energetic explosion can match all the observational constraints.
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