Tracing Galaxy Formation with Stellar Halos. I. Methods

  title={Tracing Galaxy Formation with Stellar Halos. I. Methods},
  author={James S Bullock and Kathryn V. Johnston},
  journal={The Astrophysical Journal},
  pages={931 - 949}
If the favored hierarchical cosmological model is correct, then the Milky Way system should have accreted ~100-200 luminous satellite galaxies in the past ~12 Gyr. We model this process using a hybrid semianalytic plus N-body approach that distinguishes explicitly between the evolution of light and dark matter in accreted satellites. This distinction is essential to our ability to produce a realistic stellar halo, with mass and density profile much like that of our own Galaxy, and a surviving… 
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