Century Survey Galactic Halo Project

The Century Survey Galactic Halo Project is a photometric and spectroscopic survey from which we select relatively blue stars (V-R)<0.30 mag as probes of the Milky Way halo. The Survey strip spans the range of Galactic latitude 35 < b < 88 deg, allowing us to study the nature of populations of stars and their systematic motions as a function of Galactic latitude. One of our primary goals is to use blue horizontal-branch (BHB) stars to trace potential star streams in the halo, and to test the hierarchical model for the formation of the Galaxy.

  • The Century Survey Galactic Halo Project I: Stellar Spectral Analysis paper, AJ, vol 126, page 1362-1380, presents our first data set and analysis techniques.
  • Surveying the Inner Halo of the Galaxy with 2MASS-Selected Horizontal Branch Candidates is a recently submitted paper that applies a two-color selection to the 2MASS catalog and maps the inner halo and thick disk in BHB candidates. The BHB candidate catalog is available here.
    Created Sept 30, 2003.
    Email: wbrown@cfa.harvard.edu