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D.R. Weisz (University of Minnesota), A.E. Dolphin (Steward Observatory), J.A. Holtzman (New Mexico State University), E.D. Skillman (University of Minnesota)
We present a survey of Star Formation Histories (SFHs) of Dwarf Galaxies in the Local Group using data from the HST Local Group Stellar Photometry Archive (PI = Holtzman). A uniform analysis of the archive data reduces systematic errors and facilitates comparisons between the galaxies. The SFHs are derived using a numerical routine designed to find a synthetic Color-Magnitude Diagram (CMD) that best matches the observed CMD. To determine this best fit CMD we use a maximum likelihood fitting technique to simultaneously obtain the distance modulus, extinction, and metallicity. In addition, we discuss the use of Monte Carlo simulations as a measure of the uncertainties in our results. This work is supported by grant HST-AR-09521.04 from STScI for the Archival Legacy program "Star Formation Histories of Local Group Galaxies (PI = Dolphin)."
The author(s) of this abstract have provided an email address for comments about the abstract: dweisz@astro.umn.edu
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Bulletin of the American Astronomical Society, 37 #2
© 2005. The American Astronomical Soceity.