Michelle L. M. Collins, R. Michael Rich, Scott C. Chapman
Using spectroscopic data taken with Keck II DEIMOS by the Z-PAndAS team in
the Andromeda-Triangulum region, I present a comparison of the disc and
satellite systems of Andromeda with those of our own Galaxy. I discuss the
observed discrepancies between the masses and scale radii of Andromeda dwarf
spheroidal galaxies of a given luminosity with those of the Milky Way. I also
also present an analysis of the newly discovered M31 thick disc, which is
measured to be hotter, more extended and thicker than that seen in the Milky
Way.
View original:
http://arxiv.org/abs/1201.1989
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