RSAA Colloquia / Seminars / Feast-of-Facts: Friday, 09 September 2016, 14:00-15:00; Duffield Lecture Theatre

Glenn Kacprzak

"The Circumgalactic Medium and its Role in Galaxy Evolution"

The evolution of galaxies is directly linked to the gas reservoirs surrounding them, known as the circumgalactic medium (CGM). CGM gas flows into galaxies along filaments and forms new stars. Eventually stars explode as supernovae and gas is ejected, feeding back into the CGM. This feedback loop continuously affects the morphology, mass growth and chemical make-up of galaxies. Understanding this gas cycle is key to determining how galaxies evolve. In this talk, I will present our latest results and provide an overview of our current understanding of the CGM-galaxy relationship. I’ll further show how these gas flows directly affect well known empirical relations that are commonly used to interpret how galaxies evolve.