报告题目：Exoplanet Population: Census & Demographic Analysis

报 告 人：Dong Subo (IAS, Princeton)

报告时间：2013年1月3日13点30分

报告地点：物理系三楼报告厅

报告摘要： In the last two decades, exoplanet hunters have expanded into the 'Wild West' of planet discoveries, revealing surprisingly diverse exoplanet systems. Time has come for statistics inference on planet population and understanding the physics behind the emerging patterns in their distribution. I will discuss our works on exploring the demography of extrasolar planet systems. Microlensing is uniquely sensitive to "cold" planets, and it allowed us to measure planet frequency beyond the "snow line" for the first time. Kepler mission has made orders-of-magnitude leaps in detecting planets within ~1 AU and has also discovered hundreds of multiple-planet systems. I will present our works on Kepler planet statistics. After planets are formed, dynamical processes may leave strong imprints on the planet architecture, and in particular, close-in Jupiters may have migrated to their current locations on highly-eccentric orbits. We show that the predictions of such 'high-e' mechanisms can be tested by Kepler, radial velocity and direct-imaging surveys.