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astro-ph2008★ 13 cited
The Age and Metallicity of the Bootes I System
Joanne Hughes, George Wallerstein, Anne Bossi
We present Washington photometry of a field central to the Bootes I dwarf spheroidal galaxy, which was discovered as a stellar overdensity in the Sloan Digital Sky Survey (DR5). We…
astro-ph1999
Age and Metallicity Effects in Omega Centauri
Joanne Hughes, George Wallerstein
We have observed (with vby filters) a field north of the core of the most massive globular cluster in our galaxy, Omega Centauri. We have found a correlation of age and metallicity…