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dc.contributor.authorSimpson, James
dc.contributor.authorSmail, Ian
dc.contributor.authorSwinbank, Mark
dc.contributor.authorChapman, Scott
dc.contributor.authorGeach, James
dc.contributor.authorIvison, Rob
dc.contributor.authorThomson, Alasdair
dc.contributor.authorAretxaga, Itziar
dc.contributor.authorBlain, Andrew
dc.contributor.authorCowley, Will
dc.contributor.authorChen, Chian-Chou
dc.contributor.authorCoppin, Kristen
dc.contributor.authorDunlop, Jim
dc.contributor.authorEdge, Alastair
dc.contributor.authorFarrah, Duncan
dc.contributor.authorIbar, Edo
dc.contributor.authorKarim, Alex
dc.contributor.authorKnudsen, Kirsten
dc.contributor.authorMeijerink, Rowin
dc.contributor.authorMichalowski, Michal
dc.contributor.authorScott, Douglas
dc.contributor.authorSpanns, Marco
dc.contributor.authorWerf, Paul van der
dc.date.accessioned2017-07-13T16:59:47Z
dc.date.available2017-07-13T16:59:47Z
dc.date.issued2015-07-10
dc.identifier.citationSimpson , J , Smail , I , Swinbank , M , Chapman , S , Geach , J , Ivison , R , Thomson , A , Aretxaga , I , Blain , A , Cowley , W , Chen , C-C , Coppin , K , Dunlop , J , Edge , A , Farrah , D , Ibar , E , Karim , A , Knudsen , K , Meijerink , R , Michalowski , M , Scott , D , Spanns , M & Werf , P V D 2015 , ' The SCUBA-2 Cosmology Legacy Survey : ALMA resolves the bright-end of the sub-millimeter number counts ' , The Astrophysical Journal , vol. 807 , no. 2 . https://doi.org/10.1088/0004-637X/807/2/128
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 10180620
dc.identifier.otherPURE UUID: 8936d2fc-f055-43d5-be1b-f3bb7f4105d5
dc.identifier.otherArXiv: http://arxiv.org/abs/1505.05152v1
dc.identifier.otherScopus: 84936989106
dc.identifier.otherORCID: /0000-0002-0729-2988/work/41650799
dc.identifier.urihttp://hdl.handle.net/2299/18917
dc.descriptionJ. M. Simpson, et al., “The SCUBA-2 Cosmology Legacy Survey: ALMA resolves the bright-end of the sub-millimetre number counts”, The Astrophysical Journal, Vol. 807(2), July 2015. © 2015. The American Astronomical Society.
dc.description.abstractWe present high-resolution 870-um ALMA continuum maps of 30 bright sub-millimeter sources in the UKIDSS UDS field. These sources are selected from deep, 1-square degrees 850-um maps from the SCUBA--2 Cosmology Legacy Survey, and are representative of the brightest sources in the field (median SCUBA2 flux S_850=8.7+/-0.4 mJy). We detect 52 sub-millimeter galaxies (SMGs) at >4-sigma significance in our 30 ALMA maps. In 61+/-17% of the ALMA maps the single-dish source comprises a blend of >=2 SMGs, where the secondary SMGs are Ultra--Luminous Infrared Galaxies (ULIRGs) with L_IR>10^12 Lo. The brightest SMG contributes on average 80+/-4% of the single-dish flux density, and in the ALMA maps containing >=2 SMGs the secondary SMG contributes 25+/-3% of the integrated ALMA flux. We construct source counts and show that multiplicity boosts the apparent single-dish cumulative counts by 20% at S_870>7.5mJy, and by 60% at S_870>12mJy. We combine our sample with previous ALMA studies of fainter SMGs and show that the counts are well-described by a double power-law with a break at 8.5+/-0.6mJy. The break corresponds to a luminosity of ~6x10^12Lsol or a star-formation rate of ~1000Mo/yr. For the typical sizes of these SMGs, which are resolved in our ALMA data with r=1.2+/-0.1kpc, this yields a limiting SFR density of ~100Msol/yr/kpc2. Finally, the number density of S_870>2mJy SMGs is 80+/-30 times higher than that derived from blank-field counts. An over-abundance of faint SMGs is inconsistent with line-of-sight projections dominating multiplicity in the brightest SMGs, and indicates that a significant proportion of these high-redshift ULIRGs must be physically associated.en
dc.format.extent13
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.rights/dk/atira/pure/core/openaccesspermission/open
dc.subjectastro-ph.GA
dc.subjectastro-ph.CO
dc.titleThe SCUBA-2 Cosmology Legacy Survey : ALMA resolves the bright-end of the sub-millimeter number countsen
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2015-05-18
rioxxterms.versionAM
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1088/0004-637X/807/2/128
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeopenAccess


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