AAS 207th Meeting, 8-12 January 2006
Session 21 Starbursts, LIRGS and ULIRGS
Poster, Monday, 9:20am-7:00pm, January 9, 2006, Exhibit Hall

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[21.09] Star Formation Rates in the Infrared

D. Calzetti (STScI), R.C. Kennicutt (IofA, Cambridge), C.C. Engelbracht (UofA), SINGS Team

The interest in calibrating monochromatic mid-infrared star formation rate diagnostics is sparkled by their potential application to intermediate and high redshift galaxies observed with Spitzer at long infrared wavelengths. For this project, images of nearby galaxies from Spitzer (obtained as part of the Spitzer Infrared Nearby Galaxies Survey, or SINGS) at 8~\mum and 24~\mum are combined with HST/NICMOS images in the Paschen\alpha emission line at 1.8756~\mum, to assess the regime of applicability of monochromatic mid-infrared luminosities as star formation rate indicators. The analysis targets star forming regions/complexes inside the galaxies; applicability to whole galaxies is also discussed.

This work is part of SINGS, one of the Spitzer Space Telescope Legacy Science Programs, and was partially supported by the JPL, Caltech, Contract Number 1224667. This work was also partially supported by the NASA HST grant GO--9360.

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