# University of Hertfordshire

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

Research output: Contribution to journalArticlepeer-review

### Documents

• 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
Original language English stx031 1360-1385 16 Monthly Notices of the Royal Astronomical Society 467 2 9 Jan 2017 https://doi.org/10.1093/mnras/stx031 Published - 21 May 2017

### Abstract

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.

### Notes

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.

• ## SCUBA2 Cosmology Legacy Survey

Project: Other

• ## Hertfordshire Astronomy 2015-18

Project: Research

ID: 10389402