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        Herschel unveils a puzzling uniformity of distant dusty galaxies

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        904634.pdf (PDF, 545Kb)
        Author
        Elbaz, D.
        Hwang, H. S.
        Magnelli, B.
        Daddi, E.
        Aussel, H.
        Altieri, B.
        Amblard, A.
        Andreani, P.
        Arumugam, V.
        Auld, R.
        Babbedge, T.
        Berta, S.
        Blain, A.
        Bock, J.
        Bongiovanni, A.
        Boselli, A.
        Buat, V.
        Burgarella, D.
        Castro-Rodriguez, N.
        Cava, A.
        Cepa, J.
        Chanial, P.
        Chary, R.-R.
        Cimatti, A.
        Clements, D. L.
        Conley, A.
        Conversi, L.
        Cooray, A.
        Dickinson, M.
        Dominguez, H.
        Dowell, C.D.
        Dunlop, James S.
        Dwek, E.
        Eales, S.
        Farrah, D.
        Förster Schreiber, N.
        Fox, M.
        Franceschini, A.
        Gear, W.
        Genzel, R.
        Glenn, J.
        Griffin, M.
        Gruppioni, C.
        Halpern, M.
        Hatziminaoglou, E.
        Ibar, E.
        Isaak, K.
        Ivison, R.J.
        Lagache, G.
        Le Borgne, D.
        Le Floc'h, E.
        Levenson, L.
        Lu, N.
        Lutz, D.
        Madden, S.
        Maffei, B.
        Magdis, G.
        Mainetti, G.
        Maiolino, R.
        Marchetti, L.
        Mortier, A. M. J.
        Nguyen, H.T.
        Nordon, R.
        O'Halloran, B.
        Okumura, K.
        Oliver, S. J.
        Omont, A.
        Page, M.J.
        Panuzzo, P.
        Papageorgiou, A.
        Pearson, C.P.
        Perez Fournon, I.
        Garcia Perez, Ana
        Poglitsch, A.
        Pohlen, M.
        Popesso, P.
        Pozzi, F.
        Rawlings, J.I.
        Rigopoulou, D.
        Riguccini, L.
        Rizzo, D.
        Rodighiero, G.
        Roseboom, I.G.
        Rowan-Robinson, M.
        Saintonge, A.
        Sanchez Portal, M.
        Santini, P.
        Sauvage, M.
        Schulz, B.
        Scott, D.
        Seymour, N.
        Shao, L.
        Shupe, D. L.
        Smith, A. J.
        Stevens, Jason
        Sturm, E.
        Symeonidis, M.
        Tacconi, L.
        Trichas, M.
        Tugwell, K.E.
        Vaccari, M.
        Valtchanov, I.
        Vieira, J.
        Vigroux, L.
        Wang, L.
        Ward, R.
        Wright, G.
        Xu, C.K.
        Zemcov, M.
        Attention
        2299/8014
        Abstract
        The Herschel Space Observatory enables us to accurately measure the bolometric output of starburst galaxies and active galactic nuclei (AGN) by directly sampling the peak of their far-infrared (IR) emission. Here we examine whether the spectral energy distribution (SED) and dust temperature of galaxies have strongly evolved over the last 80% of the age of the Universe. We discuss possible consequences for the determination of star-formation rates (SFR) and any evidence for a major change in their star-formation properties. We use Herschel deep extragalactic surveys from 100 to 500 μm to compute total IR luminosities in galaxies down to the faintest levels, using PACS and SPIRE in the GOODS-North field (PEP and HerMES key programs). An extension to fainter luminosities is done by stacking images on 24 μm prior positions. We show that measurements in the SPIRE bands can be used below the statistical confusion limit if information at higher spatial resolution is used, e.g. at 24 μm, to identify “isolated” galaxies whose flux is not boosted by bright neighbors.
        Publication date
        2010-07-01
        Published in
        Astronomy & Astrophysics
        Published version
        https://doi.org/10.1051/0004-6361/201014687
        Other links
        http://hdl.handle.net/2299/8014
        Metadata
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