The Department of Physics welcomes Charlotte Christensen, an assistant professor in the Department of Physics at Grinnell College.
Abstract: Galaxies evolve through a balance of gas accretion and loss. In fact, these two phenomena are intrinsically connected through a self-regulating process: gas accretion enables the formation of stars, and energy from recently formed populations of stars remove gas from the galaxy in a a process termed feedback. Using high resolution, detailed simulations of galaxies, I follow this cycle and quantify the efficiency of feedback-driven gas loss, the probability of material being reaccreted, and the final distribution of material originally in the galaxy. I also show the observable consequences of the outflows, in particular the redistribution of heavy elements produced by stars from the disk of the galaxy to the surrounding halo material.
This talk is part of the Physics Colloquium Series.
All talks begin promptly at 12:10 p.m. Lunch will be served from 11:50 a.m. to 12:10 p.m.
Friday, October 5, 2018 at 12:10pm to 1:00pm
Hayes Hall, 211/213
201 North College Road, Gambier, OH 43022