dc.contributor.author | Smail, Ian | en_US |
dc.contributor.author | Geach, J. E. | en_US |
dc.contributor.author | Swinbank, A. M. | en_US |
dc.contributor.author | Tadaki, K. | en_US |
dc.contributor.author | Arumugam, V. | en_US |
dc.contributor.author | Hartley, W. | en_US |
dc.contributor.author | Almaini, O. | en_US |
dc.contributor.author | Bremer, M. N. | en_US |
dc.contributor.author | Chapin, E. | en_US |
dc.contributor.author | Chapman, S. C. | en_US |
dc.contributor.author | Danielson, A. L. R. | en_US |
dc.contributor.author | Edge, A. C. | en_US |
dc.contributor.author | Scott, D. | en_US |
dc.contributor.author | Simpson, C. J. | en_US |
dc.contributor.author | Simpson, J. M. | en_US |
dc.contributor.author | Conselice, C. | en_US |
dc.contributor.author | Dunlop, J. S. | en_US |
dc.contributor.author | Ivison, R. J. | en_US |
dc.contributor.author | Karim, A. | en_US |
dc.contributor.author | Kodama, T. | en_US |
dc.contributor.author | Mortlock, A. | en_US |
dc.contributor.author | Robson, E. I. | en_US |
dc.contributor.author | Roseboom, I. | en_US |
dc.contributor.author | Thomson, A. P. | en_US |
dc.contributor.author | van der Werf, P. P. | en_US |
dc.contributor.author | Webb, T. M. A. | en_US |
dc.date.accessioned | 2014-03-12T19:20:59Z | |
dc.date.available | 2014-03-12T19:20:59Z | |
dc.date.issued | 2013-12-11 | en_US |
dc.identifier.citation | Smail, Ian, J. E. Geach, A. M. Swinbank, K. Tadaki, et al. 2013. "The SCUBA-2 Cosmology Legacy Survey: Ultraluminous star-forming galaxies in a z=1.6 cluster." The Astrophysical Journal 182(1): 19. | en_US |
dc.identifier.issn | 0004-637X | |
dc.identifier.uri | http://hdl.handle.net/10222/45436 | |
dc.identifier.uri | http://dx.doi.org/10.1088/0004-637X/782/1/19 | |
dc.description.abstract | We analyse new SCUBA-2 submillimeter and archival SPIRE far-infrared imaging of a z=1.62 cluster, Cl0218.3-0510, which lies in the UKIDSS/UDS field of the SCUBA-2 Cosmology Legacy Survey. Combining these tracers of obscured star formation activity with the extensive photometric and spectroscopic information available for this field, we identify 31 far-infrared/submillimeter-detected probable cluster members with bolometric luminosities >1e12 Lo and show that by virtue of their dust content and activity, these represent some of the reddest and brightest galaxies in this structure. We exploit Cycle-1 ALMA submillimeter continuum imaging which covers one of these sources to confirm the identification of a SCUBA-2-detected ultraluminous star-forming galaxy in this structure. Integrating the total star-formation activity in the central region of the structure, we estimate that it is an order of magnitude higher (in a mass-normalised sense) than clusters at z~0.5-1. However, we also find that the most active cluster members do not reside in the densest regions of the structure, which instead host a population of passive and massive, red galaxies. We suggest that while the passive and active populations have comparable near-infrared luminosities at z=1.6, M(H)~-23, the subsequent stronger fading of the more active galaxies means that they will evolve into passive systems at the present-day which are less luminous than the descendants of those galaxies which were already passive at z~1.6 (M(H)~-20.5 and M(H)~-21.5 respectively at z~0). We conclude that the massive galaxy population in the dense cores of present-day clusters were already in place at z=1.6 and that in Cl0218.3-0510 we are seeing continuing infall of less extreme, but still ultraluminous, star-forming galaxies onto a pre-existing structure. | en_US |
dc.relation.ispartof | The Astrophysical Journal | |
dc.title | The SCUBA-2 Cosmology Legacy Survey: Ultraluminous star-forming galaxies in a z=1.6 cluster | en_US |
dc.title.alternative | arXiv:1312.3329 [astro-ph] | en_US |
dc.type | article | en_US |
dc.identifier.volume | 182 | |
dc.identifier.issue | 1 | |
dc.identifier.startpage | 19 | en_US |