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The DEEP Groth Strip Survey VII: The Metallicity of Field Galaxies at 0.26<z<0.82 and the Evolution of the Luminosity-Metallicity Relation

Henry A. Kobulnicky·Christopher N. A. Willmer·Benjamin J. Weiner·David C. Koo·Andrew C. Phillips·S. M. Faber·Vicki L. Sarajedini·Luc Simard·Nicole P. Vogt
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Abstract

Using spectroscopic data from the Deep Extragalactic Evolutionary Probe (DEEP) Groth Strip survey (DGSS), we analyze the gas-phase oxygen abundances in the warm ionized medium for 64 emission-line field galaxies in the redshift range 0.26 -19) end of the sample and vanishingly small for objects at the high-luminosity end of the sample (M_B ~ -22). Simple galaxy evolution models can produce reasonable agreement with observations for low-mass galaxies when least two of the following are true: 1) low-mass galaxies have lower effective chemical yields than massive galaxies, 2) low-mass galaxies assemble on longer timescales than massive galaxies, 3) low-mass galaxies began the assembly process at a later epoch than massive galaxies. (abridged)

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Henry A. Kobulnicky, Christopher N. A. Willmer, Benjamin J. Weiner, David C. Koo, Andrew C. Phillips, S. M. Faber, Vicki L. Sarajedini, Luc Simard, Nicole P. Vogt. 2003-10-14. The DEEP Groth Strip Survey VII: The Metallicity of Field Galaxies at 0.26<z<0.82 and the Evolution of the Luminosity-Metallicity Relation. https://doi.org/10.1086/379360

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