EAS Publications Series
Volume 24, 2007CRAL-2006. Chemodynamics: From First Stars to Local Galaxies
|Page(s)||191 - 202|
|Published online||21 April 2007|
E. Emsellem, H. Wozniak, G. Massacrier, J.-F. Gonzalez, J. Devriendt and N. Champavert (eds)
EAS Publications Series, 24 (2007) 191-202
Galaxy Metallicities, Masses and Outflows at Redshifts 1 ≲ Z ≲ 3: An Observational Perspective
Harvard-Smithsonian Center for
Astrophysics, 60 Garden St., Cambridge, MA 02138, USA
I review the most widely used methods of determining chemical abundances in galaxies at 1≲ z ≲ 3, including emission and absorption line techniques (including a brief discussion of Damped Lyman Alpha systems). Most star-forming galaxies at these redshifts show significant enrichment, with ~1/3 solar to ~solar metallicities. They are overluminous for their metallicities compared to local galaxies, and the mass-metallicity relation at z ~ 2 is offset to lower metallicities compared to the local relation. Metals are also seen in the IGM at these redshifts, most likely from galactic-scale outflows in the galaxies themselves.
© EAS, EDP Sciences, 2007
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