The host stars of Kepler 's habitable exoplanets: superflares, rotation and activity
The host stars of Kepler 's habitable exoplanets: superflares, rotation and activity
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开普勒宜居系外行星的主恒星：超级耀斑、自转和活动
DOI：
10.1093/mnras/stv2419
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发表时间：
2015
影响因子：
4.8
通讯作者：
Armstrong D
中科院分区：
文献类型：
--
作者：
Armstrong D
我们开始详细研究开普勒的最像地球的系外行星的宿主恒星使用完整长度的开普勒数据的光变曲线。我们得到的旋转周期，光度活动指数，耀斑能量，质量损失率，gyrochronous年龄，X射线光度和考虑行星磁层和可居住性的影响。此外，我们提出了探测超耀斑的光变曲线的开普勒-438，迄今为止地球相似性指数最高的系外行星。开普勒-438 b的轨道距离它的主星星0.166 Au，因此可能容易受到大气剥离。我们的样本取自可居住系外行星目录，由开普勒-22，开普勒-61，开普勒-62，开普勒-174，开普勒-186，开普勒-283，开普勒-296，开普勒-298，开普勒-438，开普勒-440，开普勒-442，开普勒-443和KOI-4427组成，其中有15颗最适合居住的过境行星。
We embark on a detailed study of the light curves ofKepler's most Earth-like exoplanet host stars using the full length ofKeplerdata. We derive rotation periods, photometric activity indices, flaring energies, mass-loss rates, gyrochronological ages, X-ray luminosities and consider implications for the planetary magnetospheres and habitability. Furthermore, we present the detection of superflares in the light curve of Kepler-438, the exoplanet with the highest Earth Similarity Index to date. Kepler-438b orbits at a distance of 0.166 au to its host star, and hence may be susceptible to atmospheric stripping. Our sample is taken from the Habitable Exoplanet Catalogue, and consists of the stars Kepler-22, Kepler-61, Kepler-62, Kepler-174, Kepler-186, Kepler-283, Kepler-296, Kepler-298, Kepler-438, Kepler-440, Kepler-442, Kepler-443 and KOI-4427, between them hosting 15 of the most habitable transiting planets known to date fromKepler.