Evolution of cosmic star formation in the SCUBA-2 Cosmology Legacy Survey
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.
Item Type | Article |
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Additional information | 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: https://doi.org/10.1093/mnras/stx031 © 2017 Published by Oxford University Press on behalf of MNRAS. |
Keywords | astro-ph.ga, astro-ph.im |
Date Deposited | 15 May 2025 13:12 |
Last Modified | 31 May 2025 00:06 |
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picture_as_pdf - 1607.04283v3.pdf
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subject - Submitted Version