The Impact of Hydrodynamic Mixing on Supernova Progenitors

Details The Impact of Hydrodynamic Mixing on Supernova Progenitors The Impact of Hydrodynamic Mixing on Supernova Progenitors

2005-07-05

arxiv.org/abs/astro-ph/0507104v1

Astrophys.J.629:L101-L104,2005

Astronomy and Astrophysics

Astrophysics

12 pages, 2 figures, accepted for publication in the Astrophysical Journal Letters

Scientific paper

10.1086/447769

Recent multidimensional hydrodynamic simulations have demonstrated the importance of hydrodynamic motions in the convective boundary and radiative regions of stars to transport of energy, momentum, and composition. The impact of these processes increases with stellar mass. Stellar models which approximate this physics have been tested on several classes of observational problems. In this paper we examine the implications of the improved treatment on supernova progenitors. The improved models predict substantially different interior structures. We present pre-supernova conditions and simple explosion calculations from stellar models with and without the improved mixing treatment at 23 solar masses. The results differ substantially.

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