Schedule Feb 17, 2012
Distribution of Alpha Elements in Ultra-Faint Dwarf Galaxies
Luis C. Vargas (Yale), Marla Geha (Yale), Evan Kirby (Caltech), Joshua Simon (OCIW)

We present alpha-element abundances (Mg, Si, Ca, Ti) for 56 stars in 7 ultra-faint dwarf spheroidal galaxies, based on medium-resolution Keck/DEIMOS spectroscopy and spectral synthesis. We discuss the most salient abundance trends, and compare them against the Milky Way halo abundance patterns.


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