AAS 205th Meeting, 9-13 January 2005
Session 77 Properties of Stars
Oral, Tuesday, January 11, 2005, 10:00-11:30am, Royal Palm 4-6

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[77.06] Abudance Ratios of Bulge Giants in Baade's Window

J. P. Fulbright (Carnegie Observatories), R. M. Rich (UCLA), A. McWilliam (Carnegie Observatories)

We will present abundance results from our Keck/HIRES echelle observations of giants in the Galactic Bulge. Enhanced [alpha/Fe] ratios at very high metallicities ([Fe/H]~>~+0.3) and very old ages indicate that the primary enrichment process of the bulge was Type II supernovae. However, the form of alpha-element enhancements changes at high metallicity, suggesting that additional astrophysical events (such as pre-explosion mass loss, IMF changes, and/or metallicity-dependent yields) may have to be invoked to explain the observations. We will also present results for the Fe-group and neutron-capture elements in the bulge.

The author(s) of this abstract have provided an email address for comments about the abstract: jfulb@ociw.edu

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© 2004. The American Astronomical Society.