November
2010
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2010MNRAS.409...75H
Authors
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Hwang, H. S.
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Elbaz, D.
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Magdis, G.
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Daddi, E.
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Symeonidis, M.
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Altieri, B.
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Amblard, A.
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Andreani, P.
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Arumugam, V.
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Auld, R.
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Aussel, H.
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Babbedge, T.
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Berta, S.
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Blain, A.
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Bock, J.
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Bongiovanni, A.
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Boselli, A.
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Buat, V.
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Burgarella, D.
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Castro-Rodríguez, N.
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Cava, A.
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Cepa, J.
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Chanial, P.
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Chapin, E.
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Chary, R. -R.
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Cimatti, A.
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Clements, D. L.
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Conley, A.
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Conversi, L.
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Cooray, A.
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Dannerbauer, H.
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Dickinson, M.
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Dominguez, H.
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Dowell, C. D.
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Dunlop, J. S.
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Dwek, E.
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Eales, S.
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Farrah, D.
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Förster Schreiber, N.
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Fox, M.
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Franceschini, A.
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Gear, W.
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Genzel, R.
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Glenn, J.
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Griffin, M.
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Gruppioni, C.
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Halpern, M.
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Hatziminaoglou, E.
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Ibar, E.
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Isaak, K.
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Ivison, R. J.
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Jeong, W. -S.
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Lagache, G.
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Le Borgne, D.
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Le Floc'h, E.
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Lee, H. M.
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Lee, J. C.
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Lee, M. G.
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Levenson, L.
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Lu, N.
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Lutz, D.
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Madden, S.
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Maffei, B.
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Magnelli, B.
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Mainetti, G.
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Maiolino, R.
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Marchetti, L.
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Mortier, A. M. J.
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Nguyen, H. T.
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Nordon, R.
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O'Halloran, B.
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Okumura, K.
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Oliver, S. J.
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Omont, A.
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Page, M. J.
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Panuzzo, P.
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Papageorgiou, A.
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Pearson, C. P.
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Pérez-Fournon, I.
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García, A. M. Pérez
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Poglitsch, A.
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Pohlen, M.
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Popesso, P.
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Pozzi, F.
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Rawlings, J. I.
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Rigopoulou, D.
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Riguccini, L.
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Rizzo, D.
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Rodighiero, G.
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Roseboom, I. G.
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Rowan-Robinson, M.
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Saintonge, A.
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Portal, M. Sánchez
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Santini, P.
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Sauvage, M.
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Schulz, B.
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Scott, D.
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Seymour, N.
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Shao, L.
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Shupe, D. L.
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Smith, A. J.
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Stevens, J. A.
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Sturm, E.
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Tacconi, L.
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Trichas, M.
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Tugwell, K. E.
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Vaccari, M.
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Valtchanov, I.
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Vieira, J. D.
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Vigroux, L.
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Wang, L.
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Ward, R.
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Wright, G.
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Xu, C. K.
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Zemcov, M.
Abstract
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We study the dust properties of galaxies in the redshift range 0.1 <~ z <~ 2.8 observed by the Herschel Space Observatory in the field of the Great Observatories Origins Deep Survey-North as part of the PACS Extragalactic Probe (PEP) and Herschel Multi-tiered Extragalactic Survey (HerMES) key programmes. Infrared (IR) luminosity (LIR) and dust temperature (Tdust) of galaxies are derived from the spectral energy distribution fit of the far-IR (FIR) flux densities obtained with the PACS and SPIRE instruments onboard Herschel. As a reference sample, we also obtain IR luminosities and dust temperatures of local galaxies at z < 0.1 using AKARI and IRAS data in the field of the Sloan Digital Sky Survey. We compare the LIR-Tdust relation between the two samples and find that the median Tdust of Herschel-selected galaxies at z >~ 0.5 with LIR >~ 5 × 1010Lsolar appears to be 2-5K colder than that of AKARI-selected local galaxies with similar luminosities, and the dispersion in Tdust for high-z galaxies increases with LIR due to the existence of cold galaxies that are not seen among local galaxies. We show that this large dispersion of the LIR-Tdust relation can bridge the gap between local star-forming galaxies and high-z submillimetre galaxies (SMGs). We also find that three SMGs with very low Tdust (<~20K) covered in this study have close neighbouring sources with similar 24-μm brightness, which could lead to an overestimation of FIR/(sub)millimetre fluxes of the SMGs.
Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
E-mail: hoseong.hwang@cea.fr
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