Formation and evolution of star clusters across cosmic time
Hui Li (Columbia University)
Tuesday 08/03/2022 @ 14:00, Remote talk
Clustered star formation is the dominant star formation mode in both local and high-z galaxies. Recent observations of globular clusters (GCs) reveal tight connections with their host galaxies, suggesting a co evolution of the cluster populations and galaxies in the framework of hierarchical structure formation. In this talk, I will present some of my recent works of modeling the formation, evolution, and disruption of clusters across cosmic time in cosmological simulations. We find that the formation efficiency of YMCs are strongly enhanced during major merger events, suggesting a promising link between the merger history of the host galaxies and origin of GCs. Based on the merger-driven scenario, we designed a series of semi-analytical models to understand the demographics of GCs. The model successfully explains various scaling relationships between GC populations and their host galaxies from dwarf to giant.