NOAO >   Observing Info >   Approved Programs >   2009B-0511

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Proposal Information for 2009B-0511


PI: Shoko Sakai, University of California, Los Angeles, shoko@astro.ucla.edu
Address: Department of Astronomy, 430 Portolo Plaza, Box 951547, Los Angeles, CA 90095, USA

CoI: Liese van Zee, Indiana University
CoI: Janice C. Lee, Carnegie Observatories
CoI: Robert C. Kennicutt, Jr, Cambridge University
CoI: Jose G. Funes, Vatican Observatory

Title: Surface Photometry of Local Volume Galaxies

Abstract: We propose to obtain UBVR images of a statistically complete sample of spiral and irregular galaxies in the Local Volume Legacy (LVL) survey to investigate the correlation between past star formation activity and other physical properties such as SFR, dust content, and metallicity. The proposed optical imaging observations of 34 galaxies (27 southern, 7 northern) will be combined with existing UV, H(alpha), and IR observations, and will serve to nearly complete the optical imaging coverage of the full LVL sample of 258 galaxies. As expected for a volume limited sample, the majority of galaxies targeted here are low luminosity dwarf galaxies. The observed optical colors, in addition to optical-IR colors, will be compared with stellar population models to estimate the past history of star formation in these low mass galaxies and to provide constraints on the stellar mass-to-light ratios. The observed surface photometry will also allow us to study the photometric properties, the morphology, and spatial distributions of the different stellar populations in these low mass systems.


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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