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THE ROLE OF STAR FORMATION AND AN AGN IN DUST HEATING OF<i>z</i>= 0.3โ2.8 GALAXIES. I. EVOLUTION WITH REDSHIFT AND LUMINOSITY
We characterize infrared spectral energy distributions of 343 (ultra)luminous infrared galaxies from z = 0.3โ2.8. We diagnose the presence of an active galactic nucleus (AGN) by decomposing individual Spitzer mid-IR spectroscopy into emission from star formation and an AGN-powered continuum; we classify sources as star-forming galaxies (SFGs), AGNs, or composites. โฆ