University of Hertfordshire

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From the same journal

By the same authors

Evolution of cosmic star formation in the SCUBA-2 Cosmology Legacy Survey

Research output: Contribution to journalArticlepeer-review


  • 1607.04283v3

    Accepted author manuscript, 2.3 MB, PDF document

  • N. Bourne
  • J. S. Dunlop
  • E. Merlin
  • S. Parsa
  • C. Schreiber
  • M. Castellano
  • C. J. Conselice
  • D. Farrah
  • A. Fontana
  • M. Halpern
  • K. K. Knudsen
  • M. J. Michalowski
  • A. Mortlock
  • P. Santini
  • D. Scott
  • X. W. Shu
  • C. Simpson
  • J. M. Simpson
  • P. van der Werf
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Original languageEnglish
Article numberstx031
Pages (from-to)1360-1385
Number of pages16
JournalMonthly Notices of the Royal Astronomical Society
Early online date9 Jan 2017
Publication statusPublished - 21 May 2017


We present a new exploration of the cosmic star-formation history and dust obscuration in massive galaxies at redshifts $0.5z 10^{10}M_\odot$ galaxies at $0.5z 10$. One third of this is accounted for by 450$\mu$m-detected sources, while one fifth is attributed to UV-luminous sources (brighter than $L^\ast_{UV}$), although even these are largely obscured. By extrapolating our results to include all stellar masses, we estimate a total SFRD that is in good agreement with previous results from IR and UV data at $z\lesssim3$, and from UV-only data at $z\sim5$. The cosmic star-formation history undergoes a transition at $z\sim3-4$, as predominantly unobscured growth in the early Universe is overtaken by obscured star formation, driven by the build-up of the most massive galaxies during the peak of cosmic assembly.


This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record [N. Bourne, J. S. Dunlop, E. Merlin, S. Parsa, C. Schreibber, M. Castellano, C. J. Conselice, K. E. K. Coppin, D. Farrah, A. Fontana, J. E. Geach, M. Halpern, K. K. Knudsen, M. J. Michalowski, A. Mortlock, P. Santini, D. Scott, X. W. Shu, C. Simpson, D. J. B Smith, and P. van der Werf, 'Evolution of cosmic star formation in the SCUBA-2 Cosmology Legacy Survey, Vol. 467 (2): 1360-1385, first published 9 January 2017] is available online at doi: © 2017 Published by Oxford University Press on behalf of MNRAS.

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