Wednesday, January 11, 2012

1201.1989 (Michelle L. M. Collins et al.)

Andromeda and its satellites - a kinematic perspective    [PDF]

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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