论文标题
IACOB项目。 vii。重新审视银河系巨大的O型星的旋转特性
The IACOB project. VII. The rotational properties of Galactic massive O-type stars revisited
论文作者
论文摘要
对于巨大恒星的形成过程，进化和最终命运而言，恒星旋转至关重要。在本文中，我们回顾了对IACOB和自己项目调查的400多个银河O型星样品的旋转率特性的研究结果。通过将VSINI，TEFF和LOGG估算（由详细的定量光谱分析产生）与样品中恒星重要一部分的光谱二进制状态的信息相结合，我们提供了有关O-Star Domain Domain Domain Dominational of的经验分布的重新概述。然后将所获得的分布与单颗恒星的几个最新进化模型以及包括二进制相互作用在内的种群合成模拟进行比较，并用于提供有关恒星质量的初始速度分布的提示。
Stellar rotation is of key importance for the formation process, evolution, and final fate of massive stars. In this paper we review results from the study of the spin rate properties of a sample of more than 400 Galactic O-type stars surveyed by the IACOB and OWN projects. By combining vsini, Teff, and logg estimates (resulting from a detailed quantitative spectroscopic analysis) with information about the spectroscopic binarity status for an important fraction of the stars in the sample, we provide a renewed overview about how the empirical distribution of projected rotational velocities in the O-star domain depends on mass, evolutionary and binary status. The obtained distributions are then compared with predictions of several state-of-the-art evolutionary models for single stars, as well as from population synthesis simulations including binary interaction, and used to provide hints about the initial velocity distribution of stars with masses in the range ~15-80 Msol.
