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Ionized gas in dwarf galaxies: Abundance indicators
Published online by Cambridge University Press: 01 June 2008
Abstract
We discuss the four basic methods to derive HII region abundances in metal-poor galaxies by presenting a few recent results obtained with these methods. We end up by commenting on the yet unsolved problem of temperature fluctuations in HII regions, which may plague abundance determinations, as well as the discrepancy between abundances derived from recombination lines and collisionally excited lines, to which inhomogeneous chemical composition might be the explanation.
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- Copyright © International Astronomical Union 2008
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