UV-derived Star Formation Rates in a Survey of Nearby Starburst Dwarf Galaxies

Details UV-derived Star Formation Rates in a Survey of Nearby Starburst Dwarf Galaxies UV-derived Star Formation Rates in a Survey of Nearby Starburst Dwarf Galaxies

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21942704m&link_type=abstract

American Astronomical Society, AAS Meeting #219, #427.04

Astronomy and Astrophysics

Astronomy

Scientific paper

We present an analysis of new and archival GALEX FUV and NUV images and archival SPITZER MIPS (24 micron, 70 micron and 160 micron) images of 19 nearby starburst dwarf galaxies from the sample studied by McQuinn et al. (2010a,b). These galaxies all have recent star formation histories derived from Hubble Space Telescope (HST) imaging of resolved stars. We perform background subtractions, cropping to fit HST fields of view, re-sampling of images for matched-resolution comparisons across wavelengths, and masking of foreground stars and background galaxies. Additionally, we have created a multi-wavelength archive providing the astronomical community with access to processed data sets. We compare the current star formation rates, derived from the UV emission and corrected for extinction using total IR flux estimates, to the average star formation rates derived from the optically resolved stellar populations for a variety of timescales. Our results show very good agreement for star formation rates averaged over the past 150 Myr. Partial support for this work was provided by a NASA ADAP grant (No. NNX10AD57G), a NASA GALEX grant (No. 00015662) and the NSF REU program (PHY-0851820) at the University of Minnesota.

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