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测光来研究围绕活动恒星运行的太阳系外行星。拟议调查的主要目标是通过对凌日系统中的黑子交叉事件进行系统和全面的分析来测量自旋-轨道(mis-)排列，以及在这些数据中系统地搜索行星被主星遮挡时的二次日食。自旋-轨道排列的测量对于统计评估太阳系外行星系统的结构非常重要，而测量二次日食及其深度为测量太阳系外行星的几何反照率提供了独特的机会，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关于它们的形成过程以及行星和行星系统的演化有什么？‘)拟议的研究具体包括www.dfg.de/foerderung/info_wissenschaft/info_wissenschaft_16_46/index.html，优先方案“探索太阳系外行星多样性”(SPP1992)宣布的科学领域，即对系外行星性质的观测特征及其形成和演化过程的了解。

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.