Evolution of dust temperature of galaxies through cosmic time as seen by Herschel

H. S. Hwang, D. Elbaz, G. Magdis, E. Daddi, M. Symeonidis, B. Altieri, A. Amblard, P. Andreani, V. Arumugam, R. Auld, H. Aussel, T. Babbedge, S. Berta, A. Blain, J. Bock, A. Bongiovanni, A. Boselli, V. Buat, D. Burgarella, N. Castro-RodriguezA. Cava, J. Cepa, P. Chanial, E. Chapin, R. -R. Chary, A. Cimatti, D. L. Clements, A. Conley, L. Conversi, A. Cooray, H. Dannerbauer, M. Dickinson, H. Dominguez, C. D. Dowell, J. S. Dunlop, E. Dwek, S. Eales, D. Farrah, N. Foerster Schreiber, M. Fox, A. Franceschini, W. Gear, R. Genzel, J. Glenn, M. Griffin, C. Gruppioni, M. Halpern, E. Hatziminaoglou, E. Ibar, K. Isaak, R. J. Ivison, W. -S. Jeong, G. Lagache, D. Le Borgne, E. Le Floc'h, H. M. Lee, J. C. Lee, M. G. Lee, L. Levenson, N. Lu, D. Lutz, S. Madden, B. Maffei, B. Magnelli, G. Mainetti, R. Maiolino, L. Marchetti, A. M. J. Mortier, H. T. Nguyen, R. Nordon, B. O'Halloran, K. Okumura, S. J. Oliver, A. Omont, M. J. Page, P. Panuzzo, A. Papageorgiou, C. P. Pearson, I. Perez-Fournon, A. M. Perez Garcia, A. Poglitsch, M. Pohlen, P. Popesso, F. Pozzi, J. I. Rawlings, D. Rigopoulou, L. Riguccini, D. Rizzo, G. Rodighiero, I. G. Roseboom, M. Rowan-Robinson, A. Saintonge, M. Sanchez Portal, P. Santini, M. Sauvage, B. Schulz, D. Scott, N. Seymour, L. Shao, D. L. Shupe, A. J. Smith, J. A. Stevens, E. Sturm, L. Tacconi, M. Trichas, K. E. Tugwell, M. Vaccari, I. Valtchanov, J. D. Vieira, L. Vigroux, L. Wang, R. Ward, G. Wright, C. K. Xu, M. Zemcov

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We study the dust properties of galaxies in the redshift range 0.1 less than or similar to z less than or similar to 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 (L-IR) and dust temperature (T-dust) 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 L-IR-T-dust relation between the two samples and find that the median T-dust of Herschel-selected galaxies at z greater than or similar to 0.5 with L-IR greater than or similar to 5 x 10(10) L-circle dot appears to be 2-5 K colder than that of AKARI-selected local galaxies with similar luminosities, and the dispersion in T-dust for high-z galaxies increases with L-IR due to the existence of cold galaxies that are not seen among local galaxies. We show that this large dispersion of the L-IR-T-dust 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 T-dust (less than or similar to 20 K) covered in this study have close neighbouring sources with similar 24-mu m brightness, which could lead to an overestimation of FIR/(sub) millimetre fluxes of the SMGs.

Original languageEnglish
Pages (from-to)75-82
Number of pages8
JournalMonthly Notices of the Royal Astronomical Society
Issue number1
Publication statusPublished - Nov 2010


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