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Evolution of the dusty infrared luminosity function from z = 0 to z = 2.3 using observations from Spitzer

Magnelli, B. and Elbaz, D. and Chary, R. R. and Dickinson, M. and Le Borgne, D. and Frayer, D. T. and Willmer, C. N. A. (2011) Evolution of the dusty infrared luminosity function from z = 0 to z = 2.3 using observations from Spitzer. Astronomy and Astrophysics, 528 . Art. No. A35. ISSN 0004-6361.

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Aims. We derive the evolution of the infrared luminosity function (LF) over the last 4/5ths of cosmic time using deep 24 and 70 μm imaging of the GOODS North and South fields. Methods. We use an extraction technique based on prior source positions at shorter wavelengths to build the 24 and 70 μm source catalogs. The majority (93%) of the sources have a spectroscopic (39%) or a photometric redshift (54%) and, in our redshift range of interest (i.e., 1.3 < z < 2.3) ~20% of the sources have a spectroscopic redshift. To extend our study to lower 70 μm luminosities we perform a stacking analysis and we characterize the observed L_(24/(1 + z)) vs. L_(70/(1 + z)) correlation. Using spectral energy distribution (SED) templates which best fit this correlation, we derive the infrared luminosity of individual sources from their 24 and 70 μm luminosities. We then compute the infrared LF at z ~ 1.55 ± 0.25 and z ~ 2.05 ± 0.25. Results. We observe the break in the infrared LF up to z ~ 2.3. The redshift evolution of the infrared LF from z = 1.3 to z = 2.3 is consistent with a luminosity evolution proportional to (1 + z)^(1.0 ± 0.9) combined with a density evolution proportional to (1 + z)^9−1.1 ± 1.5). At z ~ 2, luminous infrared galaxies (LIRGs: 10^(11)L_⊙ < L_(IR) < 10^(12) L_⊙) are still the main contributors to the total comoving infrared luminosity density of the Universe. At z ~ 2, LIRGs and ultra-luminous infrared galaxies (ULIRGs: 10^(12)L_⊙ < L_(IR)) account for ~49% and ~17% respectively of the total comoving infrared luminosity density of the Universe. Combined with previous results using the same strategy for galaxies at z < 1.3 and assuming a constant conversion between the infrared luminosity and star-formation rate (SFR) of a galaxy, we study the evolution of the SFR density of the Universe from z = 0 to z = 2.3. We find that the SFR density of the Universe strongly increased with redshift from z = 0 to z = 1.3, but is nearly constant at higher redshift out to z = 2.3. As part of the online material accompanying this article, we present source catalogs at 24 μm and 70 μm for both the GOODS-North and -South fields.

Item Type:Article
Related URLs:
URLURL TypeDescription
Elbaz, D.0000-0002-7631-647X
Chary, R. R.0000-0001-7583-0621
Dickinson, M.0000-0001-5414-5131
Frayer, D. T.0000-0003-1924-1122
Additional Information:© 2011 ESO. Received 22 December 2009, Accepted 11 January 2011, Published online 23 February 2011. Appendices are only available in electronic form at Full Tables B1–B4 are only available in electronic form at CDS via anonymous ftp to ( or via We would like to thank Andrea Cimatti for permission to use the GMASS redshifts and Daniel Stern and Hyron Spinrad for permission to use their GOODS Keck redshifts. 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. B. Magnelli would like to thank Scott Chapman for clarifying issues about the IR LF for submm galaxies from his 2005 paper. D. Elbaz wishes to thank the Centre National d’Études Spatiales (CNES) for their support.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Centre National d'Études Spatiales (CNES)UNSPECIFIED
Subject Keywords:Galaxy: evolution – infrared: galaxies – galaxies: starburst – cosmology: observations
Record Number:CaltechAUTHORS:20110418-144037765
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Official Citation:Evolution of the dusty infrared luminosity function from z = 0 to z = 2.3 using observations from Spitzer B. Magnelli, D. Elbaz, R. R. Chary, M. Dickinson, D. Le Borgne, D. T. Frayer and C. N. A. Willmer A&A 528 A35 (2011) DOI: 10.1051/0004-6361/200913941
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:23371
Deposited By: Benjamin Perez
Deposited On:18 Apr 2011 22:36
Last Modified:03 Oct 2019 02:45

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