Title: Observationally constraining planet-formation models
Speaker: Hauyu Liu 吕浩宇
Institute: Institute of Astronomy and Astrophysics Academia Sinica
Host: Siyi Feng
Time: 14:30-16:30, Thursday, September, 15
Location: Physics Building 552 (online)
The Nobel Prize in 2019 has given a taste that planet-formation is becoming a research field that is as significant as cosmology. Planet-formation remains a young and growing research field. Similar to the cosmology research before year 2000, there are various possible theoretical models and (self-)contradictory observational suggestions. In this presentation, I will introduce the central debates over the last three years, and how I gauge them with archival and PI ALMA observations. I will specifically focus on topics that are related to dust masses, grain sizes, and composition in the protoplanetary disks, which are the most directly relevant to the formation of our own Earth.
吕浩宇，观测天文物理学家。藉由分析阿塔卡玛毫米与次毫米波阵列观测数据提出2019以前的观测工作，可能系统性地低估原恒星盘内尘埃质量一至两个数量级，并高估尘埃颗粒大小两至三个数量级，命名为<Anomalously Reddening>效应，以Astrophysical Physical Journal Letter形式发表。2015-2018年间于德国嘉兴任ESO Fellow、2022年获吴大猷奖。自2020起任次毫米波阵列观测时间分派委员会co-chair至今。