Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hia....13r.579b&link_type=abstract
In: Highlights of Astronomy, Vol. 13, as presented at the XXVth General Assembly of the IAU - 2003 [Sydney, Australia, 13 - 26 J
Astronomy and Astrophysics
Astronomy
Stellar Abundances
Scientific paper
Over the past two decades a worldwide effort to obtain medium-resolution spectroscopic confirmation of candidate low-metallicity stars in the halo and thick disk of the Galaxy has produced ~ 8000 1-2 A observations of stars selected from the HK objective prism survey of Beers and colleagues. More recently the Hamburg/ESO prism survey of Christlieb and collaborators has produced a larger and better understood selection of metal-poor candidates that explore a much larger volume of the Galaxy than was available to the HK survey.
We summarize the final derived Metallicity Distribution Function (MDF) of the HK survey objects and compare it with that obtained from the first several years of the HES follow-up effort. In particular we investigate whether there is evidence for a change in the nature of the MDF as a function of distance from the Galactic center which could have profound implications for the nature of the formation and evolution of the Milky Way and for galaxy formation in general.
Beers Timothy C.
Christlieb Nn.
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