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astro-ph2003
Age and Abundance Discrimination in Old Stellar Populations Using Mid-Ultraviolet Colors
Ben Dorman, Robert W. O'Connell, Robert T. Rood
The restframe mid-ultraviolet spectral region (2000-3200 A) is important in analyzing the stellar populations of the "red envelope" systems observed at high redshifts. Here, we exp…
astro-ph2003
Blue Horizontal Branch Stars in Old, Metal-Rich Stellar Systems
Ruth C. Peterson, Bruce W. Carney, Ben Dorman +5
Twenty years ago, Burstein et al. (1984)suggested that strong CN and Hbeta absorption meant younger ages among globular clusters in the Andromeda galaxy (M31), unless blue stars ab…