Starspots meet planets: A new tool to investigate the physics of transiting exoplanetary systems around active stars

我们建议利用开普勒和CoRoT空间望远镜获得的高精度长期光度测量来研究围绕活动恒星运行的系外行星。提出的调查的主要目标是通过系统和全面的分析凌日系统样本中的点交叉事件来测量自旋轨道（错）对准，以及当行星被主恒星遮挡时，在这些数据中系统地搜索二次日食。自旋轨道对准的测量对于太阳系外行星系统结构的统计评估非常重要，而二次日食及其深度的测量为测量太阳系外行星的几何反照率提供了独特的机会，从而可以得出关于其大气层的结论。这里提出的研究项目与构成SPP~1992基础的两个基本问题之一直接相关（“系外行星的多样性告诉我们它们的形成过程以及行星和行星系统的演化？”）”)，建议的研究具体包括在www.dfg.de/foerderung/info_wissenschaft/info_wissenschaft_16_46/index.html下宣布的优先计划“探索系外行星的多样性”（SPP 1992）中的科学领域，即系外行星性质的观测表征和对其形成和演化过程的理解。

We propose to utilize the high-precision long-term photometry obtained with the Kepler and CoRoT space telescopes to study extrasolar planets orbiting active stars. The primary goals of the proposed investigations are the measurement of spin-orbit (mis-)alignment through a systematic and comprehensive analysis of spot-crossing events in a larger sample of transiting systems, as well as a systematic search for secondary eclipses in these data when the planet is occulted by the host star.Measurements of the spin-orbit alignment are important for a statistical assessment of the architecture of extrasolar planetary systems and the measurement of secondary eclipses and their depth provide the unique opportunity to measure the geometric albedo of extrasolar planets, which in turn allows to draw conclusions on their atmospheres.The here proposed research project is directly related to one of the two fundamental questions forming the basis of SPP~1992 (``What does the diversity of exoplanets tell us about their formation processes and the evolution of planets and planetary systems?'') and the proposed research specifically includes the science areas in the announcement of the Priority Programme ''Exploring the Diversity of Extrasolar Planets'' (SPP 1992) under www.dfg.de/foerderung/info_wissenschaft/info_wissenschaft_16_46/index.html, viz.the observational characterization of exoplanetary properties and an understanding of their formation and evolution processes.