HerMES: The submillimeter spectral energy distributions of Herschel/SPIRE-detected galaxies

B. Schulz, C.P. Pearson, D. L. Clements, B. Altieri, A. Amblard, V. Arumugam, R. Auld, H. Aussel, T. Babbedge, A. Blain, J. Bock, A. Boselli, V. Buat, D. Burgarella, N. Castro-Rodríguez, A. Cava, P. Chanial, A. Conley, L. Conversi, A. CoorayC.D. Dowell, E. Dwek, S. Eales, D. Elbaz, M. Fox, A. Franceschini, W. Gear, E. Giovannoli, J. Glenn, M. Griffin, M. Halpern, E. Hatziminaoglou, E. Ibar, K. Isaak, R.J. Ivison, G. Lagache, L. Levenson, N. Lu, S. Madden, B. Maffei, G. Mainetti, L. Marchetti, G. Marsden, A.M.J. Mortier, H.T. Nguyen, B. O'Halloran, S. J. Oliver, A. Omont, M.J. Page, P. Panuzzo, A. Papageorgiou, I. Pérez-Fournon, M. Pohlen, N. Rangwala, J.I. Rawlings, G. Raymond, D. Rigopoulou, D. Rizzo, I.G. Roseboom, M. Rowan-Robinson, M. Sánchez Portal, D. Scott, N. Seymour, D. L. Shupe, Jason Stevens, M. Symeonidis, M. Trichas, K.E. Tugwell, M. Vaccari, E. Valiante, I. Valtchanov, L. Vigroux, L. Wang, R. Ward, G. Wright, C.K. Xu, M. Zemcov

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Abstract

We present colours of sources detected with the Herschel/SPIRE instrument in deep extragalactic surveys of the Lockman Hole, Spitzer-FLS, and GOODS-N fields in three photometric bands at 250, 350 and 500 μm. We compare these with expectations from the literature and discuss associated uncertainties and biases in the SPIRE data. We identify a 500 μm flux limited selection of sources from the HerMES point source catalogue that appears free from neighbouring/blended sources in all three SPIRE bands. We compare the colours with redshift tracks of various contemporary models. Based on these spectral templates we show that regions corresponding to specific population types and redshifts can be identified better in colour-flux space. The redshift tracks as well as the colour-flux plots imply a majority of detected objects with redshifts at 1 < z < 3.5, somewhat depending on the group of model SEDs used.
Original languageEnglish
Article numberL32
JournalAstronomy and Astrophysics
Volume518
DOIs
Publication statusPublished - 1 Jul 2010

Keywords

  • submillimeter: galaxies, galaxies: evolution, galaxies: high-redshift

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