Chemical Abundances of Metal-poor stars in Dwarf Galaxies

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Venn, Kim A.
Jablonka, Pascale
Hill, Vanessa
Starkenburg, Else
Lemasle, Bertrand
Shetrone, Matthew
Irwin, Mike
Norris, John
Yong, David
Gilmore, Gerry

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Stars in low-mass dwarf galaxies show a larger range in their chemical properties than those in the Milky Way halo. The slower star formation efficiency make dwarf galaxies ideal systems for testing nucleosynthetic yields. Not only are alpha-poor stars found at lower metallicities, and a higher fraction of carbon-enhanced stars, but we are also finding stars in dwarf galaxies that appear to be iron-rich. These are compared with yields from a variety of supernova predictions.

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Proceedings of the International Astronomical Union

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