arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1209.5928astro-ph.SRastro-ph.COastro-ph.GAastro-ph.HE
收藏

最大质量恒星的质量损失和命运

Mass loss and fate of the most massive stars

Jorick S. Vink

摘要:

300 Msun以下的大质量恒星的命运非常不确定。这些天体会产生对不稳定性爆炸还是正常的Ic型超新星?为了解决这些问题,我们需要知道它们在生命中的质量损失率。在这里,我们提出的质量损失预测的超大质量恒星(VMS)的范围在60-300 Msun。我们使用一种新的方法,同时预测风终极速度(vinf)和质量损失率(dM/dt)作为恒星参数的函数:(i)光度/质量伽马,(ii)金属丰度Z,和(iii)有效温度Teff。利用我们的结果,我们评估了最大质量恒星的可能结果。

英文摘要:

The fate of massive stars up to 300 Msun is highly uncertain. Do these objects produce pair-instability explosions, or normal Type Ic supernovae? In order to address these questions, we need to know their mass-loss rates during their lives. Here we present mass-loss predictions for very massive stars (VMS) in the range of 60-300 Msun. We use a novel method that simultaneously predicts the wind terminal velocities (vinf) and mass-loss rate (dM/dt) as a function of the stellar parameters: (i) luminosity/mass Gamma, (ii) metallicity Z, and (iii) effective temperature Teff. Using our results, we evaluate the likely outcomes for the most massive stars.

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。

↑