Colloquium on 7 September 2017
Observations and modeling of gas in and around galaxies

Details

Title: Observations and modeling of gas in and around galaxies
Speaker: Prof. Guinevere Kauffmann (Max Planck Institute for Astrophysics)
Date: Thursday, 7 September 2017
Time: 11:00 - 12:00
Venue: SAAO Auditorium

Abstract

This talk will focus on gas around galaxies in the low redshift universe. I will review recent advances in quantifying scaling relations for atomic hydrogen in galaxies using radio telescopes, as well as the diffuse gas around galaxies using Hubble Space Telescope UV spectroscopy of quasars whose sight-lines pass through the halos of galaxies similar to our own Milky Way. I will show how such observations constrain galaxy formation models, in particular the physical processes that regulate the heating and cooling of gas as a function of cosmic epoch.

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