论文标题
原始巨大恒星进化的研究
A Study of Primordial Very Massive Star Evolution
论文作者
论文摘要
我们提出了原始恒星的新进化模型，最初的质量从$ 100 \，\ mathrm {{m} _ {\ odot}} $到$ 1000 \，\ m athrm {{m Mathrm {{m} _ {\ odot}} $，该_ {\ yext odot} _核心C，NE或O燃烧，具体取决于恒星的质量和金属性。质量损失是辐射驱动的风以及主序列和红色超级阶段的脉动驱动的质量损失。在检查了进化特性后，我们关注模型的最终结果和相关的紧凑型残余物。避免配对超新星通道的星星应产生黑洞，质量从$ \约40 \，\ mathrm {{m} _ {\ odot}} $到$ \ of 1000 \，\ mathrm {{m} {m} {m} _ {\ odot} _ {\ odot}} $。特别是，初始质量约100美元的星星{{m} _ {\ odot}} $可能留下$ \ simeq 85-90 \，\ mathrm {{m} _ {\ odot}} $一致的黑洞的黑洞，值与估计的黑洞群体一致。总体而言，这些结果可能有助于解释来自下一代重力波检测器的未来数据，例如爱因斯坦望远镜和宇宙资源管理器，它们将可以访问尚未探索的BH质量范围，约为10^2-10^4 \，
We present new evolutionary models of primordial very massive stars, with initial masses ranging from $100\,\mathrm{{M}_{\odot}}$ to $1000\,\mathrm{{M}_{\odot}}$, that extend from the main sequence until the onset of dynamical instability caused by the creation of electron-positron pairs during core C, Ne, or O burning, depending on the star's mass and metallicity. Mass loss accounts for radiation-driven winds as well as pulsation-driven mass-loss on the main sequence and during the red supergiant phase. After examining the evolutionary properties, we focus on the final outcome of the models and associated compact remnants. Stars that avoid the pair-instability supernova channel, should produce black holes with masses ranging from $\approx 40\, \mathrm{{M}_{\odot}}$ to $\approx 1000\,\mathrm{{M}_{\odot}}$. In particular, stars with initial masses of about $100\,\mathrm{{M}_{\odot}}$ could leave black holes of $\simeq 85-90\, \mathrm{{M}_{\odot}}$, values consistent with the estimated primary black hole mass of the GW190521 merger event. Overall, these results may contribute to explain future data from next-generation gravitational-wave detectors, such as the Einstein Telescope and Cosmic Explorer, which will have access to as-yet unexplored BH mass range of $\approx 10^2-10^4\,\mathrm{{M}_{\odot}}$ in the early universe.
