AAS 207th Meeting, 8-12 January 2006
Session 43 Galaxy Evolution
Oral, Monday, 10:00-11:30am, January 9, 2006, Balcony A

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[43.02] Quantitative Spectral Diagnostics of Galaxy Evolution to z~0.8

J. Moustakas (University of Arizona), R. C. Kennicutt, Jr. (University of Cambridge), D. Zaritsky (University of Arizona), AGN and Galaxy Evolution Survey Collaboration

We have obtained spatially integrated, optical spectrophotometry for several hundred nearby star-forming galaxies, focusing on the population of nearby starburst galaxies that likely dominate at high redshift. We use these data to develop quantitative spectral diagnostics that measure the star-formation rates and gas-phase chemical abundances of distant galaxies. We apply these diagnostics to a sample of 6,000 galaxies at 0 < z < 0.8 from the AGN and Galaxy Evolution Survey to measure the evolution in the luminosity- and mass-metallicity relations of star-forming galaxies. We quantify the chemical enrichment of galaxies at fixed blue luminosity and stellar mass as a function of redshift, and compare our results with simple chemical evolution models and N-body hydrodynamic simulations of galaxy formation.

The author(s) of this abstract have provided an email address for comments about the abstract: jmoustakas@as.arizona.edu

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