Mid-IR Luminosities and UV/Optical Star Formation Rates at z<1.4

UV continuum and mid-IR emission constitute two widely used star formation indicators at intermediate and high redshifts. We study 2430 galaxies with z10^11 L_sun, yet with little current star formation. For them a reasonable amount of dust absorption of stellar light is sufficient to produce the ob...

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Bibliographic Details
Published in:arXiv.org 2009-05
Main Authors: Salim, Samir, Dickinson, Mark, Rich, R Michael, Charlot, Stephane, Lee, Janice C, Schiminovich, David, Perez-Gonzalez, Pablo G, Ashby, Matthew L N, Papovich, Casey, Faber, S M, Ivison, Rob J, Frayer, David T, Walton, Josiah M, Weiner, Benjamin J, Ranga-Ram Chary, Bundy, Kevin, Noeske, Kai, Koekemoer, Anton M
Format: Article
Language:English
Subjects:
Astronomical models
Bayesian analysis
Cosmic dust
Dust
Galaxies
Heating
Luminosity
Near infrared radiation
Photometry
Red shift
Star & galaxy formation
Star formation
Stellar age
Stellar populations
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Summary:UV continuum and mid-IR emission constitute two widely used star formation indicators at intermediate and high redshifts. We study 2430 galaxies with z10^11 L_sun, yet with little current star formation. For them a reasonable amount of dust absorption of stellar light is sufficient to produce the observed levels of IR. In our sample optical and X-ray AGNs do not contribute on average more than ~50% to the mid-IR luminosity, and we see no evidence for a large population of "IR excess" galaxies (Abridged).
ISSN:2331-8422
DOI:10.48550/arxiv.0905.0162