Resolving the Outer Disks and Halos of Nearby Galaxies

  title={Resolving the Outer Disks and Halos of Nearby Galaxies},
  author={Anil C. Seth and Roelof de Jong and David J. Radburn-Smith and Henry Ferguson Harvard-Smithsonian CfA and Space Telescope Science Institute},
In a hierarchical merging scenario, the outer parts of a galaxy are a fossil record of the galaxy’s early history (e.g. [1]). Observations of the outer disks and halos of galaxies thus provide a tool to study individual galaxy histories and test formation theories. Locally, an impressive effort has been made to understand the halo of the Milky Way, Andromeda, and M33 (e.g. [9, 4, 6] and contributions in this volume). However, due to the stochastic nature of halo formation, a better… 

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