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arXiv 2201.11629astro-ph.SRastro-ph.EP
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横跨HR图的天文地震学

Asteroseismology across the HR diagram

Donald Kurtz

摘要:

天文地震学从三十年前的开始发展到一个充满发现和应用的成熟领域。空间测光的精度比地面观测高出$10-100$倍,光变曲线几乎连续,持续时间从几周到几年,而大规模的地面勘测则跨越数年,旨在探测所有随时间变化的现象。新的高精度数据充满了惊喜,加深了我们对恒星物理的理解。$\bullet$这篇评论探讨了过去十年来主要由于开普勒和TESS空间任务的光变曲线而产生的星震发展:大质量的上主序OBAF星,前主序星,奇特星,经典双星,白矮星和亚矮星,潮汐相互作用的近距离双星。$\bullet$空间任务使许多类别的制冷剂数量增加了一个数量级。$\bullet$星震学测量基本的恒星参数和恒星内部物理-质量,半径,年龄,金属量,光度,距离,磁场,内部旋转,角动量转移,对流过冲,核心燃烧阶段-支持不同的领域,如银河系考古学,系外行星宿主恒星,超新星祖先,伽马射线和引力波前体,近距离双星起源和演化,标准蜡烛$\bullet$恒星是宇宙的发光示踪物。星震学极大地改进了恒星结构和演化的模型,而所有对恒星的推断都依赖于此。

英文摘要:

Asteroseismology has grown from its beginnings three decades ago to a mature field teeming with discoveries and applications. This phenomenal growth has been enabled by space photometry with precision $10-100$ times better than ground-based observations, with nearly continuous light curves for durations of weeks to years, and by large scale ground-based surveys spanning years designed to detect all time-variable phenomena. The new high precision data are full of surprises, deepening our understanding of the physics of stars. $\bullet$ This review explores asteroseismic developments from the last decade primarily as a result of light curves from the Kepler and TESS space missions for: massive upper main-sequence OBAF stars, pre-main-sequence stars, peculiar stars, classical pulsators, white dwarfs and subdwarfs, and tidally interacting close binaries. $\bullet$ The space missions have increased the numbers of pulsators in many classes by an order of magnitude. $\bullet$ Asteroseismology measures fundamental stellar parameters and stellar interior physics - mass, radius, age, metallicity, luminosity, distance, magnetic fields, interior rotation, angular momentum transfer, convective overshoot, core burning stage - supporting disparate fields such as galactic archeology, exoplanet host stars, supernovae progenitors, gamma ray and gravitational wave precursors, close binary star origins and evolution, and standard candles. $\bullet$ Stars are the luminous tracers of the universe. Asteroseismology significantly improves models of stellar structure and evolution on which all inference from stars depends.

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