来自开普勒的Transit定时观测：VII。通过Transit定时变化和轨道稳定性确认13个多行星系统中的27颗行星
Transit Timing Observations from Kepler: VII. Confirmation of 27 planets in 13 multiplanet systems via Transit Timing Variations and orbital stability
摘要：
我们确认了13个行星系中的27颗行星，通过显示存在统计上显著的反相关过境时间变化（TTV），这表明行星候选人在同一个系统中，以及长期的动力学稳定性，这限制了候选人的质量-表明它们是行星。%这种行星确认的总体方法首先应用于\kepler系统23到32。所有这些新确认的行星系都有接近一阶平均运动共振（MMR）的轨道周期，包括6个接近2：1 MMR的系统，5个接近3：2的系统，以及4：3，5：4和6：5的系统。此外，在一些系统中存在几颗未经证实的候选行星（目前无法用这种方法证实）。这些候选者中的一些也将与已确认的行星或其他候选者接近一阶MMR。开普勒-56（KOI-1241）是一对行星，围绕着一颗12等的巨星运行，其半径超过太阳的三倍，有效温度为4900 K-是已知拥有凌日系外行星系统的最大恒星。
英文摘要：
We confirm 27 planets in 13 planetary systems by showing the existence of statistically significant anti-correlated transit timing variations (TTVs), which demonstrates that the planet candidates are in the same system, and long-term dynamical stability, which places limits on the masses of the candidates---showing that they are planetary. %This overall method of planet confirmation was first applied to \kepler systems 23 through 32. All of these newly confirmed planetary systems have orbital periods that place them near first-order mean motion resonances (MMRs), including 6 systems near the 2:1 MMR, 5 near 3:2, and one each near 4:3, 5:4, and 6:5. In addition, several unconfirmed planet candidates exist in some systems (that cannot be confirmed with this method at this time). A few of these candidates would also be near first order MMRs with either the confirmed planets or with other candidates. One system of particular interest, Kepler-56 (KOI-1241), is a pair of planets orbiting a 12th magnitude, giant star with radius over three times that of the Sun and effective temperature of 4900 K---among the largest stars known to host a transiting exoplanetary system.
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