Ebb and Flow: Connecting Cosmic Gas Flows, Supermassive Black Hole Growth, and Galactic Evolution

N. Nicole Sanchez
University of Washington
Tuesday, March 9, 2021
2:00 pm
Zoom Seminars
In this talk, I will discuss the effects of supermassive black hole (SMBH) feedback on the evolution of Milky Way-mass (MW-mass) galaxies. The galaxies I will present are drawn from the cosmological volume Romulus25, which uses the N-body+Smoothed particle hydrodynamics code, ChaNGa. To create a second set of simulations, I employ a novel technique called genetic modification (GM) to generate galaxies from nearly identical initial conditions resulting in minor modifications to their accretion histories that maintain the large scale structure and final main halo mass of the original simulation. This technique allows for a truly controlled experiment that can isolate specific physical processes that influence galaxy evolution. Exploring MW-mass galaxies from both of these simulation suites, we find that (1) the SMBH propagates metals from the disk out into CGM and (2) black hole accretion histories can be influenced by larger scale galaxy accretion physics, which work in tandem to quench star formation.
Katy Rodriguez Wimberly