Title: What drives galaxy quenching? Insights from current IFU surveys

Speaker: 李成 教授(国家杰出青年科学基金获得者)
Institute: 清华大学(THU)
Time: 2017.11.09（Thursday） 10:00
Place: Physics Building 573, Haiyun Campus, Xiamen University

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 drive this process. Current integral field unit (IFU) surveys such as CALIFA and MaNGA are providing resolved spectroscopy for large samples of galaxies, allowing the star formation histories across the whole galaxy area and the quenching processes to be studied with high accuracy. I'll talk about our recent work based on CALIFA, MaNGA and SDSS, particularly the roles of environmental effect, dark matter halo and internal structure in driving the quenching process.