337 citations · 842 across the 11 of their papers we have counts for
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The Formation History of the Ultra-Faint Dwarf Galaxies
Thomas M. Brown, Jason Tumlinson, Marla Geha +11
We present early results from a Hubble Space Telescope survey of the ultra-faint dwarf galaxies. These Milky Way satellites were discovered in the Sloan Digital Sky Survey, and app…
The Outer Limits of the M31 System: Kinematics of the Dwarf Galaxy Satellites And XXVIII and And XXIX
Erik J. Tollerud, Marla C. Geha, Luis C. Vargas +1
We present Keck/DEIMOS spectroscopy of resolved stars in the M31 satellites And XXVIII & And XXIX. We show that these are likely self-bound galaxies based on 18 and 24 members in A…
The Distribution of Alpha Elements in Ultra-Faint Dwarf Galaxies
Luis C. Vargas, Marla Geha, Evan N. Kirby +1
The Milky Way ultra-faint dwarf galaxies (UFDs) contain some of the oldest, most metal-poor stars in the Universe. We present [Mg/Fe], [Si/Fe], [Ca/Fe], [Ti/Fe], and mean [alpha/Fe…