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报告题目：Dissecting Galaxy Ecosystems in Space and Time

主讲人：李成 清华大学 教授

主持人：杨雪娟 教授

报告时间：2024年3月28日（周四）16:00-17:00

报告地点：物理院主楼306报告厅

内容简介：Galaxies are evolving ecosystems of multiple components which interplay with each other and are distributed over a wide range of spatial scale, from sub-galactic scales up to scales of dark matter halos. Therefore, in order to have a complete picture of galaxy formation and evolution, one has to obtain observational data with multiple wavebands and different spatial resolutions to probe physical processes both internal and external to galaxies. Current integral field unit (IFU) surveys such as MaNGA are providing resolved spectroscopy for large samples of galaxies in the local Universe, allowing the stellar populations, dust attenuation and gas ionization, as well as star formation histories across the whole galaxy area to be studied with high accuracy. I will present our recent studies of the MaNGA galaxies. If time allows, I'll extend to larger scales and briefly talk about the content of atomic gas and warm gas in/around low-z galaxies out to scales of dark matter halos.

讲者简介：李成，清华大学天文学系教授。在2015年9月加入清华大学之前，他在上海天文台担任课题组组长(2010-2015)。德国马克斯-普朗克天体物理研究所博士后(2007-2010)、上海天文台博士后(2006-2007)。2006年获中国科学技术大学博士学位。研究主要集中在星系的结构、形成和演化，以及宇宙的大尺度结构。主持国家杰出青年科学基金(2013)。SDSS-IV项目(2014-2020)和即将到来的Subaru/PFS项目的成员。

恒星与星际物质湖南省高校重点实验室

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