NOAO >   Observing Info >   Approved Programs >   2008B-0440

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Proposal Information for 2008B-0440


PI: Henry Lee, Gemini Observatory, hlee@gemini.edu
Address: Colina El Pino s/n, La Serena, Chile

CoI: Julianne Dalcanton, University of Washington
CoI: Evan Skillman, University of Minnesota
CoI: Janice Lee, Carnegie Observatories
CoI: Liese van Zee, Indiana University
CoI: Anil Seth, Harvard CfA
CoI: Ricardo Covarrubias, Carnegie Observatories
CoI: Kevin Croxall, Indiana University
CoI: Steven Warren, University of Minnesota

Title: Current Star Formation Rates for the Histories of Star Formation in Nearby Dwarf Galaxies : Part 2 of 2

Abstract: The largest and most uniform dataset on the histories of star formation will be created with the ACS Nearby Galaxy Survey Treasury (ANGST) program and the Archival of Nearby Galaxies: Reuse, Reduce, Recycle (ANGRRR) programs, which aim, respectively, (1) to secure complete and uniform HST imaging of a volume-limited sample of galaxies out to 3.5 Mpc, and (2) to obtain homogeneous reductions of archival WFPC2/ACS imaging data of galaxies out to a distance of about 5 Mpc. These will provide some of the best and deepest data for the closest galaxies, with derived star-formation rates at ages from tens of Myr to a few Gyr. To obtain H(alpha) imaging for galaxies with existing HST ACS and WFPC2 data and to complete the observations from the first-half of the year (semester 2008A), we request in semester 2008B two nights on the Kitt Peak 2.1-m telescope and seven nights on the Cerro Tololo 0.9-m telescope. Since there are no published H(alpha) data for these galaxies, our data will pin down the present-day star-formation rate in the construction of their subsequent histories of star formation.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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