Going, Going, Gone: The Formation of the Galactic Halo

Details Going, Going, Gone: The Formation of the Galactic Halo Going, Going, Gone: The Formation of the Galactic Halo

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21411401c&link_type=abstract

American Astronomical Society, AAS Meeting #214, #114.01; Bulletin of the American Astronomical Society, Vol. 41, p.762

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A lot of new evidence has emerged in the past few years that provides clues to the formation of the Galactic halo. This process has been enabled by the current generation of large telescopes and the databases of large surveys such as the SDSS and the Hamburg/ESO Survey. The ΛCDM model, so succesful in the cosmological context, failed spectacularly when applied to this problem, but recent work has largely resolved these discrepancies. In particular several problems concerning the role of accretion of satellite dwarf galaxies in this process have been solved within the past few years. In this context, I will discuss constraints on the timescales for this process and the chemical evolution of the halo, including its system of globular clusters, as contrasted to that of the dwarf spheroidal satellites of the Milky way.

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