Title: The Galaxy Cold Gas Assembly in the Dark Matter Halos

Speaker: 郭宏 研究员，中国科学院上海天文台

Host: 王俊峰

Time: 14:30-16:30, Thursday, Jan 9, 2020

Location: Physics Building 552

Abstract: In this talk, I’ll introduce our recent work on the measurements and models of the galaxy neutral hydrogen gas (HI). The cold gas is the fuel of the star formation in galaxies. Understanding their assembly and distribution in the universe is crucial for the galaxy formation and evolution. We measure the spatial clustering of the HI-selected galaxies from the blind HI surveys and constrain the dark matter halo environments for these galaxies. In the meantime, we also measure the velocity functions of the HI gas. With all these measurements, we can put strong constraints on the gas accretion and the feedback process of galaxy formation.

Bio: Prof. Hong Guo is a research professor at Shanghai Astronomical Observatory (SHAO). He got his PhD from SHAO in 2011 and worked as a postdoc fellow at Case Western Reserve University in 2011 and University of Utah at 2013, respectively. After that, he worked as a faculty member at SHAO in 2015. Prof. Guo’s primary research interests focus on using the galaxy clustering to understand the connection between galaxies and the dark matter halos.