Constraints on the Progenitor of Cassiopeia A

By P. Young, Chris L. Fryer, A. Hungerford, D. Arnett, Gabriel Rockefeller, Francis Timmes, Benedict F. Voit, C. Meakin, Kristoffer A. Eriksen Los Alamos Natl. Lab., S. Observatory and 2 more. 2005

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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☉ 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 M☉ that loses its hydrogen envelope to a binary interaction and undergoes an energetic explosion can match all the observational constraints.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/963d7804478409cff444d73513b12f402a939101

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