University of Missouri
Tuesday, November 12, 2019
Ever since the identification of a large population of Ultra-Diffuse Galaxies (UDGs) in the Coma Cluster, there has been renewed interest in the properties of low-surface brightness galaxies. Motivated by evidence that cluster environments play an important role in UDG evolution, I will present a model for the formation of UDGs through tidal heating of dwarf-elliptical galaxies in clusters. This model is able to reproduce many aspects of the observed UDG population, including the size distribution and the dependence of UDG abundance with cluster mass. Additionally, by incorporating recipes for globular cluster formation into this model, I am able to explain some of the puzzling measurements of globular clusters around UDGs. Lastly, I will discuss evidence for non-smooth in high-z galaxies, and the implication of this result with regards to dwarf galaxies in clusters.