Massive Star Mergers: Induced Mixing and Nucleosynthesis

Details Massive Star Mergers: Induced Mixing and Nucleosynthesis Massive Star Mergers: Induced Mixing and Nucleosynthesis

2001-12-03

arxiv.org/abs/astro-ph/0112039v1

Astronomy and Astrophysics

Astrophysics

4 pages. To be published in Ap&SS

Scientific paper

10.1023/A:1019553109023

We study the nucleosynthesis and the induced mixing during the merging of massive stars inside a common envelope. The systems of interest are close binaries, initially consisting of a massive red supergiant and a main-sequence companion of a few solar masses. We apply parameterized results based on hydrodynamical simulations to model the stream-core interaction and the response of the star in a standard stellar-evolution code. Preliminary results are presented illustrating the possibility of unusual nucleosynthesis and post-merging dredge-up which can cause composition anomalies in the supergiant's envelope.

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