Astronomy Seminar: Juggling gas and metals: exploring the role of outflows in galaxy evolution
| Date/Time: | Friday, 12 Oct 2018 from 4:10 pm to 5:10 pm |
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| Location: | Rm. A401, Zaffarano Physics Addn. |
| Cost: | Free |
| Contact: | Curt Struck |
| Phone: | 515-294-3666 |
| Channel: | College of Liberal Arts and Sciences |
| Actions: | Download iCal/vCal | Email Reminder |
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 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.