中国科学院云南天文台学术报告通知

2026年第12期

报告题目：Star Formation and Metal Enrichment in Galaxies: A Gas-Regulator Perspective
报告人：王恩赐 教授

报告人单位：中国科学技术大学

报告语言： 中文

报告时间：2026年3月17日（星期二）10:30-12:00

报告地点：科研3号楼106会议室

报告摘要：

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Star-forming galaxies continuously accrete gas from their surrounding environment over cosmic time, while stellar feedback simultaneously drives gas outflows and enriches the interstellar and intergalactic medium. The interplay between gas inflow, outflow, and star formation therefore plays a central role in shaping the formation and evolution of galaxies, as well as the key observational relations associated with them. From this perspective, the gas-regulator model can explain a wide range of observed galaxy scaling relations, including the existence and scatter of the star-forming main sequence, the mass–metallicity relation and its dependence on SFR and galaxy size, as well as the HI scaling relations, all arising from time-varying gas inflow during galaxy evolution. In addition, we develop a leaky accretion-disk model to describe the formation of gaseous disks in galaxies. This model quantitatively reproduces the radial gradients of gas-phase metallicity and further suggests that the exponential structure of star-forming disks originates from viscous processes driven by magneto-rotational instability.
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报告人简介： 

In 2011, Enci Wang received the bachelor's degree from the Department of Astronomy, University of Science and Technology of China. In 2016, he obtained the doctorate degree in astrophysics from Shanghai Astronomical Observatory, Chinese Academy of Sciences. From June 2016 to June 2018, he was back to USTC as a postdoctoral researcher. After July 2018, he moved to ETH Zurich and started his second postdoctoral research career. After May 2023, he returned to China and Joined in USTC as a faculty member in department of astronomy.

云台邀请方：星系类星体研究团组
邀请方联系人：赵应和