Colloquium:- The Three Evolutionary Pathways of Galaxy Ecosystems- Recent Achievements and Open Questions
Galaxies form at the center of dark matter halos through the cooling and condensation of gas. Internal structure such as spiral arms and bars as well as minor mergers/interactions with surrounding satellite galaxies may drive the “secular evolution” in central galaxies. Some central galaxies may fall into more massive halos and become satellite galaxies suffering from gas stripping and star formation quenching due to environmental effects. In addition, central galaxies may experience major mergers with other central galaxies of comparable mass, leading to the formation of galaxies with early-type morphology or bulge-dominated red disk galaxies. The three evolutionary pathways together can explain the diverse properties of the observed galaxies in large surveys, but a number of key questions still remain open. The speaker will review some of the recent achievements based on both observations and simulations, as well as open questions that may be answered in the near future.
時間：2024.03.22(五) 16:00~17:00
地點：香港中文大學 科學館L2演講室
講者：Prof. LI Cheng 李成 教授 (中国 清华大學 天文系*)
語言：英語
免費會議，歡迎參加
【此屬轉載信息，以主事單位發布為準】
*Department of Astronomy, Tsinghua University, China
此活動由香港中文大學物理系主辦。
https://newww.phy.cuhk.edu.hk/wp-content/uploads/24-03-22-Li-C.pdf
