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arXiv 1111.2578astro-ph.SR
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KIC 1571511 B:开普勒场中一颗低质量恒星

KIC 1571511B: A Benchmark Low-Mass Star In An Eclipsing Binary System In The Kepler Field

Aviv Ofir, Davide Gandolfi, Lars Buchhave, Claud H. S. Lacy, Artie P. Hatzes, Malcolm Fridlund

摘要:

KIC 1571511是开普勒数据集中的一颗14维食双星(EB)。这颗EB的伴星是一颗质量非常低的恒星,质量为0.14136 +/- 0.00036 M_sun,半径为0.17831 + 0.00051/-0.00062 R_sun(仅统计误差)。KIC 1571511 B的整体系统参数使其成为理想的“基准天体”:是已知最小、最轻、描述最好的恒星之一,甚至比一些已知的系外行星还要小。目前可用的测光只包括总数的一小部分:未来开普勒数据发布承诺将KIC 1571511 B的许多属性限制到前所未有的水平。然而,在许多光谱单线系统中,当前的误差预算主要是由主要的建模误差,而不是由上述统计误差。我们的结论是,检测RV信号的二次组件是至关重要的,以实现这一可能的基准对象的低质量恒星的研究的全部潜力。

英文摘要:

KIC 1571511 is a 14d eclipsing binary (EB) in the Kepler dataset. The secondary of this EB is a very low mass star with a mass of 0.14136 +/- 0.00036 M_sun and a radius of 0.17831 +0.00051/-0.00062 R_sun (statistical errors only). The overall system parameters make KIC 1571511B an ideal "benchmark object": among the smallest, lightest and best-described stars known, smaller even than some known exoplanet. Currently available photometry encompasses only a small part of the total: future Kepler data releases promise to constrain many of the properties of KIC 1571511B to unprecedented level. However, as in many spectroscopic single-lined systems, the current error budget is dominated by the modeling errors of the primary and not by the above statistical errors. We conclude that detecting the RV signal of the secondary component is crucial to achieving the full potential of this possible benchmark object for the study of low mass stars.

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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