Speaker
Description
Gas is the essential component in a galaxy that dominates its evolution. It also provides insight into the large-scale structure and the evolution of the Universe. In this talk, I will introduce an overview of treatments of gas and star formation in our updated semi-analytic model. Our model includes a self-consistent partition of HI and H$_2$ in the cold gas disk, as well as environmental effects on multi-phase gas. It presents one of the best matches with observed gas measurements among the state-of-art models and simulations at z=0. I will discuss the impact of different physical processes on the gas abundances and star formation rates of central and satellite galaxies. I will then introduce our efforts on improving the model predictions at high redshifts.
