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.
@article{arxiv.1201.1989,
title = {Andromeda and its satellites - a kinematic perspective},
author = {Michelle L. M. Collins and R. Michael Rich and Scott C. Chapman},
journal= {arXiv preprint arXiv:1201.1989},
year = {2012}
}
Comments
2 pages, contribution to the Third Subaru Conference, Galactic Archaeology: Near Field Cosmology and the Formation of the Milky Way ed. Wako Aoki