dc.contributor.author | Simpson, James | |
dc.contributor.author | Smail, Ian | |
dc.contributor.author | Swinbank, Mark | |
dc.contributor.author | Chapman, Scott | |
dc.contributor.author | Geach, James | |
dc.contributor.author | Ivison, Rob | |
dc.contributor.author | Thomson, Alasdair | |
dc.contributor.author | Aretxaga, Itziar | |
dc.contributor.author | Blain, Andrew | |
dc.contributor.author | Cowley, Will | |
dc.contributor.author | Chen, Chian-Chou | |
dc.contributor.author | Coppin, Kristen | |
dc.contributor.author | Dunlop, Jim | |
dc.contributor.author | Edge, Alastair | |
dc.contributor.author | Farrah, Duncan | |
dc.contributor.author | Ibar, Edo | |
dc.contributor.author | Karim, Alex | |
dc.contributor.author | Knudsen, Kirsten | |
dc.contributor.author | Meijerink, Rowin | |
dc.contributor.author | Michalowski, Michal | |
dc.contributor.author | Scott, Douglas | |
dc.contributor.author | Spanns, Marco | |
dc.contributor.author | Werf, Paul van der | |
dc.date.accessioned | 2017-07-13T16:59:47Z | |
dc.date.available | 2017-07-13T16:59:47Z | |
dc.date.issued | 2015-07-10 | |
dc.identifier.citation | Simpson , 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 , 128 . https://doi.org/10.1088/0004-637X/807/2/128 | |
dc.identifier.issn | 0004-637X | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1505.05152v1 | |
dc.identifier.other | ORCID: /0000-0002-0729-2988/work/41650799 | |
dc.identifier.uri | http://hdl.handle.net/2299/18917 | |
dc.description | J. 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.abstract | We 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.extent | 13 | |
dc.format.extent | 2950200 | |
dc.language.iso | eng | |
dc.relation.ispartof | The Astrophysical Journal | |
dc.subject | astro-ph.GA | |
dc.subject | astro-ph.CO | |
dc.title | The SCUBA-2 Cosmology Legacy Survey : ALMA resolves the bright-end of the sub-millimeter number counts | en |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Science & Technology Research Institute | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1088/0004-637X/807/2/128 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |