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Stars form in cluster environments, and the clusters can provide homogenious and accurate parameters of cluster members, to investigate the correlation between planetary systems and hosts. In this talk, I will briefly introduce the UPiC program to explore the planet formation and evolution correlated with the open clusters and associations, via simulations and statistics based on Kepler-TESS-Gaia sample. The simulations reveal the stability of cold planets in OCs, as well as the the disk lifetime in cluster environment due to external photoevaporation. Combining Kepler and Gaia data, we provide observational evidences of the influence on Kepler's planet occurrence rate due to dynamical history. We also collect a largest exoplanet catalogues in clusters and associations to do statistics, and constarin the mechanism of formation of HJs and Hot-Neptune desert.
Liu Hui-Gen is an associate professor in NJU. He got his PHD degree of astronomy in 2002, and work in NJU, Schoole of Astronomy and Space Science untill now. His research field including planetary dynamics, planet detection, planet atmosphere characterizing and habitability of exoplanets. He is also in charge of the science goal and observational strategies of TiDO telescopes (Time domain observatory of NJU in Lenghu), and is deeply involved in the space projects of exoplanet detection and characterizing, e.g. CSST, UVEyes (紫瞳), MEAYIN（觅音），TWINKLE，etc.