arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.11162astro-ph.SR
收藏

大质量恒星的星震学:用空间望远镜对恒星内部的新认识

Asteroseismology of high-mass stars: new insights of stellar interiors with space telescopes

Dominic M. Bowman

摘要:

大质量恒星是宇宙中重要的金属工厂。它们的生命短暂而充满活力,其中许多不可避免地爆炸为超新星,成为中子星或黑洞。反过来,大质量恒星的形成、演化和爆炸性死亡会影响周围的星际介质,并塑造其宿主星系的演化。然而,大质量恒星的化学和动力学演化,包括最终超新星的化学产额和致密天体的残余质量,强烈依赖于祖星的内部物理。我们目前缺乏经验校准处方的各种物理过程中工作的大质量恒星,但这是现在正在弥补的asteroseismology。利用恒星振荡研究恒星结构和演化-星震学-由于空间望远镜的高精度时间序列测光,在过去二十年中经历了一场革命。特别是,MOST、CoRoT、BRITE、Kepler/K2和TESS飞行任务提供的长期光变曲线在光度精度、持续时间和频率分辨率方面提供了宝贵的数据集,以便成功地将星震学应用于大质量恒星并探测其内部物理。对大质量恒星中恒星脉动的观测和随后的建模揭示了这些恒星的恒星结构和演化模型中缺少的关键成分。因此,星震学打开了一个新的窗口,校准恒星物理学的高度简并的一部分,赫兹斯普朗-罗素图。在这篇评论中,我提供了一个历史性的进展,使用地面和早期的空间任务的概述,并讨论了最近的进展和突破,我们的理解大质量的恒星内部通过asteroseismology与现代空间望远镜。

英文摘要:

Massive stars are important metal factories in the Universe. They have short and energetic lives, and many of them inevitably explode as a supernova and become a neutron star or black hole. In turn, the formation, evolution and explosive deaths of massive stars impact the surrounding interstellar medium and shape the evolution of their host galaxies. Yet the chemical and dynamical evolution of a massive star, including the chemical yield of the ultimate supernova and the remnant mass of the compact object, strongly depend on the interior physics of the progenitor star. We currently lack empirically calibrated prescriptions for various physical processes at work within massive stars, but this is now being remedied by asteroseismology. The study of stellar structure and evolution using stellar oscillations - asteroseismology - has undergone a revolution in the last two decades thanks to high-precision time series photometry from space telescopes. In particular, the long-term light curves provided by the MOST, CoRoT, BRITE, Kepler/K2 and TESS missions provided invaluable data sets in terms of photometric precision, duration and frequency resolution to successfully apply asteroseismology to massive stars and probe their interior physics. The observation and subsequent modelling of stellar pulsations in massive stars has revealed key missing ingredients in stellar structure and evolution models of these stars. Thus asteroseismology has opened a new window into calibrating stellar physics within a highly degenerate part of the Hertzsprung-Russell diagram. In this review, I provide a historical overview of the progress made using ground-based and early space missions, and discuss more recent advances and breakthroughs in our understanding of massive star interiors by means of asteroseismology with modern space telescopes.

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。

↑