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Metal-poor dwarf galaxies in the SIGRID galaxy sample. II. The electron temperature-abundance calibration and the parameters that affect it
David C. Nicholls, Michael A. Dopita, Ralph S. Sutherland +3
In this paper, we use the Mappings photoionization code to explore the physical parameters that impact on the measurement of electron temperature and abundance in HII regions. In t…
Metal-poor dwarf galaxies in the SIGRID galaxy sample. I. HII region observations and chemical abundances
David C. Nicholls, Michael A. Dopita, Ralph S. Sutherland +3
In this paper we present the results of observations of seventeen HII regions in thirteen galaxies from the SIGRID sample of isolated gas rich irregular dwarf galaxies. The spectra…
Choirs HI Galaxy Groups: The metallicity of dwarf galaxies
Sarah M. Sweet, Michael J. Drinkwater, Gerhardt Meurer +4
We present a recalibration of the luminosity-metallicity relation for gas-rich, star-forming dwarfs to magnitudes as faint as M ~ -13. We use the Dopita et al. (2013) metallici…