Mid-Infrared Determination of Total Infrared Luminosity and Star Formation Rates of Local and High-Redshift Galaxies

摘要: We demonstrate estimating the total infrared luminosity, LIR, and star formation rates (SFRs) of star-forming galaxies at redshift 0 < z 2.8 from single-band 24 micron observations, using local spectral energy distributions (SED) templates without introducing additional free parameters. Our method is based on characterizing SEDs as a function their LIR surface density, which motivated by indications that majority IR luminous 1 3 have extended regions, in contrast to strongly nuclear concentrated, merger-induced starbursts ultraluminous galaxies. validate our procedure for comparing resulting LIRs with those measured far-IR observations 2.8. AGNs were excluded X-ray 3.6-8.0 are generally available deep cosmological survey fields. The Gaussian fits distribution discrepancies between measurements Herschel sigma 0.1 dex, ~10% objects disagreeing more than 0.2 dex. Since estimates galaxies, this agreement suggests ~90% high indeed much physically counterparts similar consistent recent independent studies fractions forming stars main-sequence starburst modes, respectively. Because we not introduced empirical corrections enhance these estimates, principle, should be applicable lower luminosity This will enable use 21 band Mid-Infrared Instrument (MIRI) board JWST provide an extremely sensitive tracer obscured SFR individual across peak cosmic history.