Disk-Bulge-Halo Models for the Andromeda Galaxy

  title={Disk-Bulge-Halo Models for the Andromeda Galaxy},
  author={Lawrence M. Widrow and Kathryn Perrett and Sherry H. Suyu Queen's University and California Institute of Technology.},
  journal={The Astrophysical Journal},
We present a suite of semianalytic disk-bulge-halo models for the Andromeda galaxy (M31) that satisfy three fundamental conditions: (1) internal self-consistency, (2) consistency with observational data, and (3) stability of the disk against the formation of a central bar. The models are chosen from a set first constructed by Kuijken & Dubinski. We develop an algorithm to search the parameter space for this set in order to best match observations of the M31 rotation curve, inner velocity… Expand
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