论文标题

群众损失和爱丁顿参数

Mass loss and the Eddington parameter

论文作者

Bestenlehner, Joachim M.

论文摘要

通过恒星风的质量损失在巨大恒星的进化中起主要作用。非常庞大的星星(VMS,$> 100 m _ {\ odot} $)在主序列上显示狼射线光谱形态(WNH)。 Bestenlehner(2020)将Castor,Abbott&Klein(1975)的优雅且广泛使用的恒星风理论从光学薄(O Star)扩展到了光学较厚的主序列(WNH)风状态。新的质量损失描述能够解释对爱丁顿参数的经验质量差异依赖性,并适合将大型恒星的恒星进化模型纳入恒星演化模型。可以使用Vink&Gräfener(2012)中定义的过渡质量损失率进行校准。基于Bestenlehner等人中提出的出色样本。 (2014年)我们使用Bestenlehner的新理论质量损失处方(2020)来得出大麦芽云的质量损失食谱。

Mass loss through stellar winds plays a dominant role in the evolution of massive stars. Very massive stars (VMSs, $> 100 M_{\odot}$) display Wolf-Rayet spectral morphologies (WNh) whilst on the main-sequence. Bestenlehner (2020) extended the elegant and widely used stellar wind theory by Castor, Abbott & Klein (1975) from the optically thin (O star) to the optically thick main-sequence (WNh) wind regime. The new mass-loss description is able to explain the empirical mass-loss dependence on the Eddington parameter and is suitable for incorporation into stellar evolution models for massive and very massive stars. The prescription can be calibrated with the transition mass-loss rate defined in Vink & Gräfener (2012). Based on the stellar sample presented in Bestenlehner et al. (2014) we derive a mass-loss recipe for the Large Magellanic Cloud using the new theoretical mass-loss prescription of Bestenlehner (2020).

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