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  • Decarli, R.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)

An Alma Survey of Sub-Millimeter Galaxies in the Extended Chandra Deep Field South: Sub-Millimeter Properties of Color-Selected Galaxies

  • Article/chapterEnglish2014

Publisher, publication year, extent ...

  • 2014
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:7df1689c-1041-4b21-949f-30e99a782e4d
  • https://doi.org/10.1088/0004-637X/780/2/115DOI
  • https://research.chalmers.se/publication/193789URI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • We study the sub-millimeter properties of color-selected galaxies via a stacking analysis applied for the first time to interferometric data at sub-millimeter wavelengths. We base our study on 344 GHz ALMA continuum observations of similar to 20 ''-wide fields centered on 86 sub-millimeter sources detected in the LABOCA Extended Chandra Deep Field South (ECDFS) Sub-millimeter Survey. We select various classes of galaxies (K-selected, star-forming sBzK galaxies, extremely red objects, and distant red galaxies) according to their optical/near-infrared fluxes. We find clear, >10 sigma detections in the stacked images of all these galaxy classes. We include in our stacking analysis Herschel/SPIRE data to constrain the dust spectral energy distribution of these galaxies. We find that their dust emission is well described by a modified blackbody with T-dust approximate to 30 K and beta = 1.6 and infrared luminosities of (5-11) x 10(11) L-circle dot or implied star formation rates of 75-140 M-circle dot yr(-1). We compare our results with those of previous studies based on single-dish observations at 870 mu m and find that our flux densities are a factor 2-3 higher than previous estimates. The discrepancy is observed also after removing sources individually detected in ALESS maps. We report a similar discrepancy by repeating our analysis on 1.4 GHz observations of the whole ECDFS. Hence, we find tentative evidence that galaxies that are associated in projected and redshift space with sub-mm bright sources are brighter than the average population. Finally, we put our findings in the context of the cosmic star formation rate density as a function of redshift.

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  • Smail, I.Durham University (author)
  • Walter, F.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Swinbank, A. M.Durham University (author)
  • Chapman, S. C.University Of Cambridge,Dalhousie University (author)
  • Coppin, K. E. K.University of Hertfordshire (author)
  • Cox, P.Atacama Large Millimeter-submillimeter Array (ALMA),Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Dannerbauer, H.Universität Wien,University of Vienna (author)
  • Greve, T. R.University College London (UCL) (author)
  • Hodge, J. A.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Ivison, R. J.University of Edinburgh (author)
  • Karim, A.Universität Bonn,University of Bonn,Durham University (author)
  • Knudsen, Kirsten Kraiberg,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)kraiberg (author)
  • Lindroos, Lukas,1986Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)lindroos (author)
  • Rix, H. W.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Schinnerer, E.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Simpson, J. M.Durham University (author)
  • van der Werf, P.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Weiss, A.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG)Durham University (creator_code:org_t)

Related titles

  • In:Astrophysical Journal780:21538-43570004-637X

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