A Comparison of Optical vs. IR SFR Diagnostics of Starforming Galaxies in the SPITZER Extragalactic First Look Survey

Details A Comparison of Optical vs. IR SFR Diagnostics of Starforming Galaxies in the SPITZER Extragalactic First Look Survey A Comparison of Optical vs. IR SFR Diagnostics of Starforming Galaxies in the SPITZER Extragalactic First Look Survey

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20512802c&link_type=abstract

American Astronomical Society Meeting 205, #128.02; Bulletin of the American Astronomical Society, Vol. 36, p.1555

Astronomy and Astrophysics

Astronomy

Scientific paper

We investigate the instantaneous star formation rates (SFR) and extinction properties for a large (N≈200), NIR (2.2\micron) + MIR (24\micron) selected sample of normal to luminous infrared galaxies (LIRGs) with ˜0.8 in the First Look Survey (FLS). We combine SPITZER MIPS 24\micron observations with high resolution optical Keck Deimos spectroscopy to compare infrared luminosity and optical emission-line derived star formation rates (SFRIR & SFROpt, respectively). The discrepancy between the optical vs. infrared derived SFRs suggest that our sample exhibits a wide range of optical extinctions (1.0

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