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arXiv 1406.3473astro-ph.SR
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恒星风的质量传递

Mass Transfer by Stellar Wind

Henri M. J. Boffin

摘要:

我回顾的过程中,通过恒星风的质量转移在一个二元系统,重点是系统包含一个红巨星。我如何风吸积在一个二进制系统是不同的,从通常假设的邦迪-霍伊尔近似,首先就流的结构而言,但最重要的是,也为质量吸积和特定的角动量损失。这对轨道参数的演变具有重要意义。本文还讨论了风吸积对吸积恒星的化学污染和自转变化的影响。最后一节涉及观测,并涵盖了最有可能经历风质量转移的系统:钡星和相关恒星,共生星和行星状星云(CSPN)的中心星。最近对钡星的冷CSPN祖星以及富碳后共包络系统的观测,对质量传递过程提供了独特的约束。

英文摘要:

I review the process of mass transfer in a binary system through a stellar wind, with an emphasis on systems containing a red giant. I show how wind accretion in a binary system is different from the usually assumed Bondi-Hoyle approximation, first as far as the flow's structure is concerned, but most importantly, also for the mass accretion and specific angular momentum loss. This has important implications on the evolution of the orbital parameters. I also discuss the impact of wind accretion, on the chemical pollution and change in spin of the accreting star. The last section deals with observations and covers systems that most likely went through wind mass transfer: barium and related stars, symbiotic stars and central stars of planetary nebulae (CSPN). The most recent observations of cool CSPN progenitors of barium stars, as well as of carbon-rich post-common envelope systems, are providing unique constraints on the mass transfer processes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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