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dc.contributor.authorBourne, N.
dc.contributor.authorDunne, L.
dc.contributor.authorMaddox, S. J.
dc.contributor.authorDye, S.
dc.contributor.authorFurlanetto, C.
dc.contributor.authorHoyos, C.
dc.contributor.authorSmith, D. J. B.
dc.contributor.authorEales, S.
dc.contributor.authorSmith, M. W. L.
dc.contributor.authorValiante, E.
dc.contributor.authorAlpaslan, M.
dc.contributor.authorAndrae, E.
dc.contributor.authorBaldry, I. K.
dc.contributor.authorCluver, M. E.
dc.contributor.authorCooray, A.
dc.contributor.authorDriver, S. P.
dc.contributor.authorDunlop, J. S.
dc.contributor.authorGrootes, M. W.
dc.contributor.authorIvison, R. J.
dc.contributor.authorJarrett, T. H.
dc.contributor.authorLiske, J.
dc.contributor.authorMadore, B. F.
dc.contributor.authorPopescu, C. C.
dc.contributor.authorRobotham, A. G.
dc.contributor.authorRowlands, K.
dc.contributor.authorSeibert, M.
dc.contributor.authorThompson, M. A.
dc.contributor.authorTuffs, R. J.
dc.contributor.authorViaene, S.
dc.contributor.authorWright, A. H.
dc.identifier.citationBourne , N , Dunne , L , Maddox , S J , Dye , S , Furlanetto , C , Hoyos , C , Smith , D J B , Eales , S , Smith , M W L , Valiante , E , Alpaslan , M , Andrae , E , Baldry , I K , Cluver , M E , Cooray , A , Driver , S P , Dunlop , J S , Grootes , M W , Ivison , R J , Jarrett , T H , Liske , J , Madore , B F , Popescu , C C , Robotham , A G , Rowlands , K , Seibert , M , Thompson , M A , Tuffs , R J , Viaene , S & Wright , A H 2016 , ' The Herschel -ATLAS Data Release 1 – II. Multi-wavelength counterparts to submillimetre sources ' , Monthly Notices of the Royal Astronomical Society , vol. 462 , no. 2 , pp. 1714-1734 .
dc.identifier.otherPURE: 246573186
dc.identifier.otherPURE UUID: 15ad7e1d-258d-4d18-a622-1d074737904c
dc.identifier.otherRIS: urn:DCC6FE03E23F67AC4807AFB7DB2B3B18
dc.identifier.otherScopus: 84988878375
dc.identifier.otherWOS: 000384674100039
dc.descriptionSD is supported by STFC with an Ernest Rutherford fellowship.en
dc.description.abstractThis paper is the second in a pair of papers presenting data release 1 (DR1) of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS), the largest single open-time key project carried out with the Herschel Space Observatory. The H-ATLAS is a wide-area imaging survey carried out in five photometric bands at 100, 160, 250, 350 and 500 μm covering a total area of 600 deg2. In this paper, we describe the identification of optical counterparts to submillimetre sources in DR1, comprising an area of 161 deg2 over three equatorial fields of roughly 12 × 4.5 deg centred at 9h, 12h and 14${^{\rm h}_{.}}$5, respectively. Of all the H-ATLAS fields, the equatorial regions benefit from the greatest overlap with current multi-wavelength surveys spanning ultraviolet (UV) to mid-infrared regimes, as well as extensive spectroscopic coverage. We use a likelihood ratio technique to identify Sloan Digital Sky Survey counterparts at r <22.4 for 250-μm-selected sources detected at ≥4σ (≈28 mJy). We find ‘reliable’ counterparts (reliability R ≥ 0.8) for 44 835 sources (39 per cent), with an estimated completeness of 73.0 per cent and contamination rate of 4.7 per cent. Using redshifts and multi-wavelength photometry from GAMA and other public catalogues, we show that H-ATLAS-selected galaxies at z <0.5 span a wide range of optical colours, total infrared (IR) luminosities and IR/UV ratios, with no strong disposition towards mid-IR-classified active galactic nuclei in comparison with optical selection. The data described herein, together with all maps and catalogues described in the companion paper, are available from the H-ATLAS website at
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rights© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at:
dc.subjectMethods: statisticalen
dc.subjectSubmillimetre: galaxiesen
dc.subjectSubmillimetre: starsen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleThe Herschel-ATLAS Data Release 1 – II. Multi-wavelength counterparts to submillimetre sourcesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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