Mapping the stars, gas and dust in nearby galaxies

主讲人 (Speaker): 

李成

主讲人单位 (Speaker's Institute): 

清华大学

邀请人 (Invited by): 

林伟鹏

时间 (Time): 

星期三, 2019/05/22 - 15:00 to 16:00

地点 (Location): 

珠海校区海滨红楼17栋107 (Rm 107, Red House 17)

摘要 (Abstract): 

       The cosmic star formation rate density has been declining since z~2-3, suggesting that the cessation of star formation has been the dominating process in galaxy evolution since then. However, it is unclear how the star formation gets quenched inside the galaxies and what physical mechanisms have been driving this process. Current integral field unit (IFU) surveys such as CALIFA and MaNGA are providing resolved spectroscopy for large samples of galaxies in the local Universe, allowing the star formation histories across the whole galaxy area to be studied with high accuracy. In addition, maps of molecular gas are also being obtained by arrays of radio antenna, thus providing additional data for linking the star formation and gas accretion processes in the IFU era. I'll talk about our recent works based on the CALIFA, MaNGA and CARMA-EDGE surveys, particularly focusing on the roles of environmental effect,dark matter halo and internal structure in driving galaxy evolution.

主讲人简介 (Speaker's CV): 

李成，清华大学教授，国家杰出青年。研究领域：星系形成与演化、星系环境、宇宙大尺度结构。工作经历：2015年9月起，清华大学物理系教授；2011年1月起，中科院-德国马普伙伴小组组长；2010年10月起，中科院上海天文台研究员；2007年9月至2010年9月，德国马普天体物理所博士后；2006年10月至2007年8月，中科院上海天文台-德国马普天体物理所联合博士后。教育经历：2006年毕业于中国科学技术大学天文系，获天体物理博士学位；2000年毕业于中国科学技术大学天文与应用物理系，获天体物理学士学位。