报告摘要：Orbits and physical properties of exoplanets may keep evolving after formation. For example, it has long been discussed that the shortest-period planets may have orbits unstable to tidal dissipation and spiral into their host stars. Recent transit observations of low-mass planets have also provided evidence for evaporation of their atmospheres, which provides clues to the internal composition of those planets. Understanding such evolution is crucial for comprehending the diversity of exoplanetary systems and placing our solar system in a broader context. In this talk, I will present our ongoing efforts to probe these changes statistically by examining the dependence of exoplanet occurrence rates on stellar age. I will discuss our recent work on deriving age-dependent occurrence rates of giant planets orbiting Sun-like stars using isochronal ages, and also mention insights into rotation-based ages from high-resolution spectroscopy of Sun-like stars in twin binaries.
主讲人简介：Dr. Masuda is an associate professor in the Department of Earth and Space Science at Osaka University, Japan. Before joining Osaka University in 2020, he spent four years at Princeton University and the Institute for Advanced Study in the United States. He earned his Ph.D. in physics from the University of Tokyo in 2016.
