Kepler-210: An active star with at least two planets
Kepler-210: An active star with at least two planets
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DOI：
10.1051/0004-6361/201322622
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发表时间：
2014-03
影响因子：
6.5
通讯作者：
P. Ioannidis;J. Schmitt;C. Avdellidou;C. V. Essen;E. Agol
中科院分区：
文献类型：
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作者：
P. Ioannidis;J. Schmitt;C. Avdellidou;C. V. Essen;E. Agol
我们报告的检测和表征的两个短周期，海王星大小的行星周围的活跃主机星星开普勒-210。从这些行星得到的宿主星星参数（a）相互不一致，（B）不符合预期的宿主星星参数。此外，我们报告检测过境时间变化（TTV）的O-C图的两颗行星。我们探讨了解释和解决这些差异的各种情况。一个与所有数据一致的简单方案似乎是将大的偏心率归因于内部短周期行星，并将TTV解释为另一个周期稍长的行星的作用。为了证实我们的建议，我们提出了N体模拟的结果，模拟的TTV和检查开普勒-210系统的稳定性。
We report the detection and characterization of two short-period, Neptune-sized planets around the active host star Kepler-210. The host star's parameters derived from those planets are (a) mutually inconsistent and (b) do not conform to the expected host star parameters. We furthermore report the detection of transit timing variations (TTVs) in the O-C diagrams for both planets. We explore various scenarios that explain and resolve those discrepancies. A simple scenario consistent with all data appears to be one that attributes substantial eccentricities to the inner short-period planets and that interprets the TTVs as due to the action of another, somewhat longer period planet. To substantiate our suggestions, we present the results of N-body simulations that modeled the TTVs and that checked the stability of the Kepler-210 system.