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arXiv 1005.3496astro-ph.SR
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脉动与行星:星震学-太阳系外-行星的联系

Pulsations and planets: the asteroseismology-extrasolar-planet connection

Sonja Schuh

摘要:

在高精度测光时间序列观测分支中,星震学和太阳系外行星科学的学科有系统地重叠。除其他外,光变曲线可用于测量由于振荡引起的恒星固有变化,以及发现和表征那些在其宿主恒星前面过境的太阳系外行星,周期性地导致观测到的亮度的浅下降。这两个领域最终得出恒星和行星物体的基本参数,允许在恒星和行星系统形成和演化的整体背景下研究例如各类脉动恒星的物理学或各种行星系统。这两种方法通常还需要广泛的光谱跟踪,以充分探索正在调查的过程的动态特性。在特别有趣的情况下,结合观测到的脉动和行星的特征,可以通过结合互补信息来高度完整地描述系统的组成部分。因此,相关空间飞行任务的规划在科学方面趋于一致,而在科学方面,最初主要是仪器和技术方面的巧合。无论是太空还是地面,一种特定类型的恒星脉动本身都可以以创新的方式用于搜索太阳系外行星。从这个额外的方法在接口的恒星脉动研究和系外行星狩猎在超越主流地区的结果。

英文摘要:

The disciplines of asteroseismology and extrasolar planet science overlap methodically in the branch of high-precision photometric time series observations. Light curves are, amongst others, useful to measure intrinsic stellar variability due to oscillations, as well as to discover and characterize those extrasolar planets that transit in front of their host stars, periodically causing shallow dips in the observed brightness. Both fields ultimately derive fundamental parameters of stellar and planetary objects, allowing to study for example the physics of various classes of pulsating stars, or the variety of planetary systems, in the overall context of stellar and planetary system formation and evolution. Both methods typically also require extensive spectroscopic follow-up to fully explore the dynamic characteristics of the processes under investigation. In particularly interesting cases, a combination of observed pulsations and signatures of a planet allows to characterize a system's components to a very high degree of completeness by combining complementary information. The planning of the relevant space missions has consequently converged with respect to science cases, where at the outset there was primarily a coincidence in instrumentation and techniques. Whether space- or ground-based, a specific type of stellar pulsations can themselves be used in an innovative way to search for extrasolar planets. Results from this additional method at the interface of stellar pulsation studies and exoplanet hunts in a beyond-mainstream area are presented.

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。

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