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The SPLASH Survey: Spectroscopy of 15 M31 Dwarf Spheroidal Satellite Galaxies
Erik J. Tollerud, Rachael L. Beaton, Marla C. Geha +13
We present a resolved-star spectroscopic survey of 15 dwarf spheroidal (dSph) satellites of the Andromeda Galaxy (M31) as part of the Spectroscopic and Photometric Landscape of And…
The SPLASH Survey: A Spectroscopic Portrait of Andromeda's Giant Southern Stream
Karoline M. Gilbert, Puragra Guhathakurta, Priya Kollipara +6
The giant southern stream (GSS) is the most prominent tidal debris feature in M31's stellar halo. The GSS is composed of a relatively metal-rich, high surface-brightness "core" and…
Properties of Dark Matter Revealed by Astrometric Measurements of the Milky Way and Local Galaxies
Edward Shaya, Robert Olling, Massimo Ricotti +19
The fact that dark matter (DM), thus far, has revealed itself only on scales of galaxies and larger, again thrusts onto astrophysics the opportunity and the responsibility to confr…
Galactic Dynamics and Local Dark Matter
Steven R. Majewski, James Bullock, Andreas Burkert +13
The concordance Lambda Cold Dark Matter (Lambda-CDM) model for the formation of structure in the Universe, while remarkably successful at describing observations of structure on la…