3 papers
astro-ph2005
Detailed Chemical Abundances of Extragalactic Globular Clusters
R. A. Bernstein, A. McWilliam
We outline a method to measure the detailed chemical composition of extragalactic (unresolved) globular clusters (GCs) from echelle spectra of their integrated light. Our goal is t…
astro-ph2003
Composition of the Galactic bulge
Andrew McWilliam, R. Michael Rich
We present detailed abundance results for 9 Galactic bulge stars in Baade's Window, based on HIRES (R=45,000--60,000) spectra taken with the Keck I telescope. The alpha elements sh…
astro-ph1999
Ages and Chemical Abundances in Dwarf Spheroidal Galaxies
Tammy Smecker-Hane, Andrew McWilliam
The dwarf spheroidal galaxies (dSphs) in the Local Group are excellent systems on which we can test theories of galaxy formation and evolution. Color-magnitude diagrams (CMDs) cont…