Ionized gas in dwarf galaxies: Abundance indicators

Details Ionized gas in dwarf galaxies: Abundance indicators Ionized gas in dwarf galaxies: Abundance indicators

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..255..375s&link_type=abstract

Low-Metallicity Star Formation: From the First Stars to Dwarf Galaxies, Proceedings of the International Astronomical Union, IAU

Astronomy and Astrophysics

Astronomy

3

(Ism:) Hii Regions, Galaxies: Abundances, Galaxies: Dwarf

Scientific paper

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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