The Impact of Hydrodynamic Mixing on Supernova Progenitors | Zendy

Patrick Young | Zendy; Casey Meakin | Zendy; David Arnett | Zendy; Chris L. Fryer | Zendy

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The Impact of Hydrodynamic Mixing on Supernova Progenitors

Author(s) -

Patrick Young,

Casey Meakin,

David Arnett,

Chris L. Fryer

Publication year - 2005

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/447769

Subject(s) - supernova , mixing (physics) , physics , astrophysics , astronomy , quantum mechanics

Recent multidimensional hydrodynamic simulations have demonstrated theimportance of hydrodynamic motions in the convective boundary and radiativeregions of stars to transport of energy, momentum, and composition. The impactof these processes increases with stellar mass. Stellar models whichapproximate this physics have been tested on several classes of observationalproblems. In this paper we examine the implications of the improved treatmenton supernova progenitors. The improved models predict substantially differentinterior structures. We present pre-supernova conditions and simple explosioncalculations from stellar models with and without the improved mixing treatmentat 23 solar masses. The results differ substantially.Comment: 12 pages, 2 figures, accepted for publication in the Astrophysical Journal Letter

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