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Choirs HI galaxy groups: The metallicity of dwarf galaxies

Sweet, Sarah M; Drinkwater, Michael John; Meurer, Gerhardt; Bekki, Kenji; Dopita, Michael; Nicholls , David; Kilborn, Virginia A


We present a recalibration of the luminosity-metallicity relation for gas-rich, star-forming dwarfs to magnitudes as faint as MR -13. We use the Dopita et al. metallicity calibrations to calibrate the relation for all the data in this analysis. In metallicity-luminosity space, we find two subpopulations within a sample of high-confidence Sloan Digital Sky Survey (SDSS) DR8 star-forming galaxies: 52% are metal-rich giants and 48% are metal-medium galaxies. Metal-rich dwarfs classified as tidal...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/782/1/35
Access Rights: Open Access


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