Jenny Greene, Princeton University

Topic: "Galaxy Nuclei, Galaxy Outskirts"  (Video)

Abstract: I will talk about two different aspects of massive galaxy evolution. First, I will discuss the assembly of ellipical galaxies based on high signal to noise spectra beyond the effective radius taken with an integral-field spectrograph. The stars in the outskirts of these galaxies are enriched in alpha elements but have low metallicity, similiar to thick disk stars in our galaxy. We suggest that thes stars were accreted from small galaxies that formed early and had a truncated star formation history. Second, I will discuss supermassive black hole scaling relations, and what they may tell us about the coevolution of black holes and galaxies. I will end with tantalizing new clues about the lifetimes of sub-pc supermassive black holes binaries.