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The Far-Infrared Luminosity Function from GOODS-North: Constraining the Evolution of Infrared Galaxies for z ≤ 1

Huynh, Minh T. and Frayer, David T. and Mobasher, Bahram and Dickinson, Mark and Chary, Ranga-Ram and Morrison, Glenn (2007) The Far-Infrared Luminosity Function from GOODS-North: Constraining the Evolution of Infrared Galaxies for z ≤ 1. Astrophysical Journal Letters, 667 (1). L9-L12. ISSN 2041-8205. doi:10.1086/521981. https://resolver.caltech.edu/CaltechAUTHORS:HUYapjl07

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Abstract

We present the IR luminosity function derived from ultradeep 70 μm imaging of the GOODS-North field. The 70 μm observations are longward of the PAH and silicate features which complicate work in the MIR. We derive far-infrared luminosities for the 143 sources with S70 > 2 mJy (S/N > 3σ). The majority (81%) of 70 the sources have spectroscopic redshifts, and photometric redshifts are calculated for the remainder. The IR luminosity function at four redshifts (z ∼ 0.28, 0.48, 0.78, and 0.97) is derived and compared to the local one. There is considerable degeneracy between luminosity and density evolution. If the evolving luminosity function is described as ρ(L,z) = (1+z)^q ρ(L/(1+z)^p, 0, we find q = -2.19p + 6.09. In the case of pure luminosity p = 2.78 +0.34 -0.32. This is consistent with the results from 24 μm and 1.4 GHz studies. Our results confirm the emerging picture of strong evolution in LIRGs and ULIRGs at 0.4 < z < 1.1, but we find no evidence of significant evolution in the sub-LIRG (L < 10^11 L☉) population for z < 0.4.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1086/521981DOIArticle
ORCID:
AuthorORCID
Frayer, David T.0000-0003-1924-1122
Dickinson, Mark0000-0001-5414-5131
Chary, Ranga-Ram0000-0001-7583-0621
Additional Information:© 2007 The American Astronomical Society. Received 2007 June 15; accepted 2007 July 30; published 2007 September 11. This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. Online material: color figure
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASAUNSPECIFIED
Subject Keywords:galaxies: evolution—infrared: galaxies
Issue or Number:1
DOI:10.1086/521981
Record Number:CaltechAUTHORS:HUYapjl07
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:HUYapjl07
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11717
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:21 Sep 2008 06:14
Last Modified:08 Nov 2021 22:01

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