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Probing the Baryon Cycle in Galaxy Outskirts

Published online by Cambridge University Press:  21 March 2017

Romeel Davé
Romeel Davé*
Affiliation:
University of the Western Cape, Bellville, Cape Town 7535, South Africa South African Astronomical Observatories, Observatory, Cape Town 7925, South Africa African Institute for Mathematical Sciences, Muizenberg, Cape Town 7945, South Africa email: [email protected]
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Abstract

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Galaxies are born and grow within a cosmic ecosystem, in which they receive material from surrounding intergalactic gas via gravitationally-driven inflows and expel material via powerful galactic outflows. These processes, collectively referred to as the baryon cycle, are increasingly believed to govern galaxy growth over cosmic time. I discuss new insights on the baryon cycle using analytic models and hydrodynamical simulations of galaxy evolution, particularly emphasizing how galaxy outskirts are the prime locale within which to observe these processes in action by examining observational tracers such as rest-ultraviolet absorption lines and the neutral and molecular gas content of galaxies.

Keywords

galaxies: formationgalaxies: evolutiongalaxies: absorption linesgalaxies: ISMmethods: n-body simulations
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 53 - 60
Copyright
Copyright © International Astronomical Union 2017 

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