A POPULATION OF VERY HOT SUPER-EARTHS IN MULTIPLE-PLANET SYSTEMS SHOULD BE UNCOVERED BY KEPLER
A POPULATION OF VERY HOT SUPER-EARTHS IN MULTIPLE-PLANET SYSTEMS SHOULD BE UNCOVERED BY KEPLER
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DOI：
10.1088/2041-8205/724/1/l53
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发表时间：
2010-10
期刊：
影响因子：
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通讯作者：
K. Schlaufman;D. Lin;D. Lin;Shigeru Ida
中科院分区：
文献类型：
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作者：
K. Schlaufman;D. Lin;D. Lin;Shigeru Ida
我们模拟了对理论系外行星群的类开普勒观测，结果表明，所观测到的开普勒巨行星候选者的轨道周期分布与区间 106 ≲ Q′* ≲ 107 内的平均恒星特定耗散函数 Q′* 最为匹配。在这种情况下，通过多行星系统中的动态相互作用驱动到轨道周期 P < 1 天的少数超级地球将在潮汐破坏中的很大一部分中幸存下来。恒星宿主的主序寿命。因此，尽管这些非常热的超级地球并不是整个超级地球种群的特征，但它们巨大的凌日概率意味着它们应该对开普勒发现的全部超级地球种群做出重要贡献。因此，CoRoT-7 系统可能是非常热的超级地球群体的第一个代表，我们建议应该在优先绕开普勒样本中耗散最少的恒星宿主运行的多行星系统中找到这些超级地球。
We simulate a Kepler-like observation of a theoretical exoplanet population and show that the observed orbital period distribution of the Kepler giant planet candidates is best matched by an average stellar specific dissipation function Q′* in the interval 106 ≲ Q′* ≲ 107. In that situation, the few super-Earths that are driven to orbital periods of P < 1 day by dynamical interactions in multiple-planet systems will survive tidal disruption for a significant fraction of the main-sequence lifetimes of their stellar hosts. Consequently, though these very hot super-Earths are not characteristic of the overall super-Earth population, their substantial transit probability implies that they should be significant contributors to the full super-Earth population uncovered by Kepler. As a result, the CoRoT-7 system may be the first representative of a population of very hot super-Earths that we suggest should be found in multiple-planet systems preferentially orbiting the least-dissipative stellar hosts in the Kepler sample.