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DECOMPOSING STAR FORMATION AND ACTIVE GALACTIC NUCLEUS WITH<i>SPITZER</i>MID-INFRARED SPECTRA: LUMINOSITY FUNCTIONS AND CO-EVOLUTION

DECOMPOSING STAR FORMATION AND ACTIVE GALACTIC NUCLEUS WITH<i>SPITZER</i>MID-INFRARED SPECTRA: LUMINOSITY FUNCTIONS AND CO-EVOLUTION

We present Spitzer 7–38 μm spectra for a 24 μm flux-limited sample of galaxies at z ∼ 0.7 in the COSMOS field. The detailed high-quality spectra allow us to cleanly separate star formation (SF) and active galactic nucleus (AGN) in individual galaxies. We first decompose mid-infrared luminosity functions (LFs). We …