CaltechAUTHORS
  A Caltech Library Service

HerMES: Spectral Energy Distributions of Submillimeter Galaxies at z > 4

Huang, J.-S. and Rigopoulou, D. and Magdis, G. and Rowan-Robinson, M. and Dai, Y. Sophia and Bock, J. J. and Burgarella, D. and Chapman, S. and Clements, D. L. and Cooray, A. and Farrah, D. and Glenn, J. and Oliver, S. and Smith, A. J. and Wang, L. and Page, M. and Riechers, D. and Roseboom, I. and Symeonidis, M. and Fazio, G. G. and Yun, M. and Webb, T. M. A. and Efstathiou, A. (2014) HerMES: Spectral Energy Distributions of Submillimeter Galaxies at z > 4. Astrophysical Journal, 784 (1). Art. No. 52. ISSN 0004-637X. http://resolver.caltech.edu/CaltechAUTHORS:20140605-113014540

[img]
Preview
PDF - Published Version
See Usage Policy.

2998Kb
[img]
Preview
PDF - Submitted Version
See Usage Policy.

1632Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20140605-113014540

Abstract

We present a study of the infrared properties for a sample of seven spectroscopically confirmed submillimeter galaxies (SMGs) at z > 4.0. By combining ground-based near-infrared, Spitzer IRAC and MIPS, Herschel SPIRE, and ground-based submillimeter/millimeter photometry, we construct their spectral energy distributions (SEDs) and a composite model to fit the SEDs. The model includes a stellar emission component at λ_(rest) < 3.5 μm, a hot dust component peaking at λ_(rest) ~ 5 μm, and cold dust component which becomes significant for λ_(rest) > 50 μm. Six objects in the sample are detected at 250 and 350 μm. The dust temperatures for the sources in this sample are in the range of 40-80 K, and their L_(FIR) ~ 10^(13) L_☉ qualifies them as hyper-luminous infrared galaxies. The mean FIR-radio index for this sample is around 〈q〉 = 2.2 indicating no radio excess in their radio emission. Most sources in the sample have 24 μm detections corresponding to a rest-frame 4.5 μm luminosity of Log_(10)(L_(4.5)/L_☉) = 11 ~ 11.5. Their L_(4.5)/L_(FIR) ratios are very similar to those of starburst-dominated SMGs at z ~ 2. The L_(CO) – L_(FIR) relation for this sample is consistent with that determined for local ULIRGs and SMGs at z ~ 2. We conclude that SMGs at z > 4 are hotter and more luminous in the FIR but otherwise very similar to those at z ~ 2. None of these sources show any sign of the strong QSO phase being triggered.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1401.6079arXivDiscussion Paper
http://iopscience.iop.org/0004-637X/784/1/52PublisherArticle
http://dx.doi.org/10.1088/0004-637X/784/1/52DOIArticle
ORCID:
AuthorORCID
Magdis, G.0000-0002-4872-2294
Dai, Y. Sophia0000-0002-7928-416X
Bock, J. J.0000-0002-5710-5212
Clements, D. L.0000-0002-9548-5033
Cooray, A.0000-0002-3892-0190
Farrah, D.0000-0003-1748-2010
Oliver, S.0000-0001-7862-1032
Page, M.0000-0002-6689-6271
Riechers, D.0000-0001-9585-1462
Fazio, G. G.0000-0002-0670-0708
Efstathiou, A.0000-0002-2612-4840
Additional Information:© 2014 American Astronomical Society. Received 2013 March 14; accepted 2014 January 25; published 2014 March 4. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. This work is based in part 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. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. SPIRE has been developed by a consortium of institutes led by Cardiff Univ. (UK) and including: Univ. Lethbridge (Canada); NAOC (China); CEA, LAM (France); IFSI, Univ. Padua (Italy); IAC (Spain); Stockholm Observatory (Sweden); Imperial College London, RAL, UCLMSSL, UKATC, Univ. Sussex (UK); and Caltech, JPL, NHSC, Univ. Colorado (USA). This development has been supported by national funding agencies: CSA (Canada); NAOC (China); CEA, CNES, CNRS (France); ASI (Italy); MCINN (Spain); SNSB (Sweden); STFC, UKSA (UK); and NASA (USA). Facilities: Herschel (SPIRE), Spitzer (IRAC, MIPS).
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASA/JPL/CaltechUNSPECIFIED
Canadian Space Agency (CSA)UNSPECIFIED
National Astronomical Observatories, Chinese Academy of Sciences (NAOC)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Agenzia Spaziale Italiana (ASI)UNSPECIFIED
Ministerio de Ciencia e Innovación (MCINN)UNSPECIFIED
Swedish National Space Board (SNSB)UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
United Kingdom Space Agency (UKSA)UNSPECIFIED
Subject Keywords: cosmology: observations; galaxies: evolution; galaxies: formation; infrared: galaxies
Record Number:CaltechAUTHORS:20140605-113014540
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140605-113014540
Official Citation:HerMES: Spectral Energy Distributions of Submillimeter Galaxies at z > 4 J.-S. Huang et al. 2014 ApJ 784 52
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46099
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:05 Jun 2014 20:27
Last Modified:10 Jul 2019 17:27

Repository Staff Only: item control page