arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1908.02771astro-ph.IMastro-ph.SR
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用径向速度表征行星的参数分布对理解行星形成和演化至关重要

Characterizing the Distribution of Parameters of Planets Found by Radial Velocity is Essential for Understanding Planet Formation and Evolution

Stuart F. Taylor

摘要:

系外行星参数按周期分布的特征表明,行星参数的分布具有丰富的信息,可以为理解行星历史提供必要的指导。在行星-恒星“物体”的周期计数中发现了结构,在这些结构中,偏心率与行星数量、恒星金属丰度、每对数周期行星计数密度、恒星多样性和行星质量有不同的相关性。它们似乎彼此变化,并随着恒星质量而变化,但行星太少,无法轻松可靠地研究这些重要关系。这些关系是大量的可观测数据,行星形成和演化理论必须根据这些数据进行检验。确定系外行星参数之间关系的性质的机会证明了在从几天到几千天甚至更长的时间内找到更多行星的价值。我们建议支持继续寻找更多的行星,甚至是巨行星,其周期长达几千天。我们还建议支持对许多系外行星参数分布的研究。

英文摘要:

Features in the distribution of exoplanet parameters by period demonstrate that the distribution of planet parameters is rich with information that can provide essential guidance to understanding planet histories. Structure has been found in the counts of planet-star "objects" by period, and within these structures, there are different correlations of eccentricity with planet number, stellar metallicity, planet count density per log period, stellar multiplicity, and planet mass. These appear to change with each other, and with stellar mass, but there are too few planets to easily and reliably study these important relationships. These relationships are the bulk observables against which the theory of planet formation and evolution must be tested. The opportunity to determine the nature of the relationships of the exoplanet parameters on each other demonstrate the value of finding more planets across period ranging from days to thousands of days and beyond. We recommend support for continuing to find more planets, even giant planets, with periods up to periods of a few thousand days. We also recommend support for the study of the distribution of the many exoplanet parameters.

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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