Highlights of Discoveries for δ Scuti Variable Stars From the Kepler Era
Highlights of Discoveries for δ Scuti Variable Stars From the Kepler Era
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DOI：
10.3389/fspas.2021.653558
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发表时间：
2021-04
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影响因子：
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通讯作者：
J. Guzik
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文献类型：
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作者：
J. Guzik
NASA开普勒和后续的K2使命（2009-2018）留下了大量的数据和发现，发现了数千颗系外行星，并获得了数十万颗恒星的高精度长时间序列数据，包括许多类型的脉动变量。在这里，我们强调了开普勒数据中关于Scuti δ脉动变星的一些正在进行的发现，这些变星是核心燃烧氢的恒星，质量约为太阳的两倍。我们讨论了许多未解决的问题，围绕这些恒星的可变性的属性，以及开普勒数据在使用脉动来推断其内部结构，一个被称为asteroseismology的研究领域中所取得的进展。
The NASA Kepler and follow-on K2 mission (2009–2018) left a legacy of data and discoveries, finding thousands of exoplanets, and also obtaining high-precision long time-series data for hundreds of thousands of stars, including many types of pulsating variables. Here we highlight a few of the ongoing discoveries from Kepler data on δ Scuti pulsating variables, which are core hydrogen-burning stars of about twice the mass of the Sun. We discuss many unsolved problems surrounding the properties of the variability in these stars, and the progress enabled by Kepler data in using pulsations to infer their interior structure, a field of research known as asteroseismology.