J/MNRAS/498/5065ivo://CDS.VizieR/J/MNRAS/498/5065doi:10.26093/cds/vizier/bg-fj-4y9CDSShim H.Kim Y.Lee D.Lee H.M.Goto T.Matsuhara H.Scott D.,Serjeant S.Ao Y.Barrufet L.Chapman S.Clements D.L.Conselice C.J.,Greve T.R.Hashimoto T.Hwang H.S.Im M.Jeong W.-S.Jiang L.Kim M.,Kim S.J.Kong A.K.H.Koprowski M.Marchetti L.Michalowski M.J.,Parsons H.Pearson C.Seo H.Toba Y.White G.2026-08-03T07:30:16Z2023-11-06T09:54:10ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmillimeter-astronomysubmillimeter-astronomygalaxiescatalogsastrometryWe present an 850-{mu}m mosaic map and extracted catalogue of submillimetre sources in the extended North Ecliptic Pole (NEP) region over about 2deg^2^. The 850-{mu}m map is constructed using newly obtained observations by SCUBA-2 at the East Asian Observatory's James Clerk Maxwell Telescope, carried out using the observatory's large programme opportunities. The recent 850-{mu}m survey has extended the submillimetre data coverage by almost a factor of 4 compared to previous surveys, with a depth of {sigma}_rms_=1.0-2.3mJy/beam. The catalogue contains 549 sources selected above a significance level of 4{sigma}, where the false-detection rate is 10 per cent; a higher threshold of 4.5{sigma} is required in order to achieve a false-detection rate below 3 per cent, which results in 342 sources being selected. Despite the large spatial variation of the noise, the deboosted flux density of sources is comparable to results from the SCUBA-2 Cosmology Legacy Survey, which covered the central 0.6deg^2^ of our survey area with better sensitivity. We construct the source counts at 850{mu}m, finding results in agreement with other 850-{mu}m surveys in cosmological blank fields over S_850_=4-15mJy. We find a slight excess of bright galaxies (S_850_>15mJy), which can be considered to be at z_phot_=2-4. The 850-{mu}m data add valuable long-wavelength information to mid-infrared-selected sources from the AKARI NEP-deep and NEP-wide surveys, which will be helpful in preparing for future near-infrared to millimetre wavelength observations in the NEP region. Our 850-{mu}m mosaic map and source catalogue will be made publicly available.2020MNRAS.498.5065Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/498/5065CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/498/5065https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/498/5065http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/498/5065https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/498/5065https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/498/5065http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/498/5065GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/498/5065/table2 (850-{mu}m source catalogue from the NEPSC2 survey covering approximately 2deg^2^)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/498/5065/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/498/5065/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/498/5065/table2?GETtext/xml+votable180.050000true269.63916766.6329170.0055555555555555566/10239 11605 11607 15359 16042-160432.3390025583187276e-22 2.3390025583187276e-22https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/498/5065?format=asciiMillimeterdefaultJ/MNRAS/498/5065/table2850-{mu}m source catalogue from the NEPSC2 survey covering approximately 2deg^2^recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (NEPSC2_JHHMMSS-DDMMSS)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainS850obsObserved 850um flux densitymJyphot.flux.density;em.mm.200-400GHzfloate_S850obsError on S850obs (1)mJystat.errorfloatS/NSignal to noise ratiostat.snrfloatS850debDeboosted 850um flux densitymJyphot.flux.density;em.mm.200-400GHzfloate_S850debError on S850deb (2)mJystat.errorfloatCCompleteness (3)meta.notefloatlogFLogarithm of the false-detection rate (4)meta.numberfloatdthetaPositional uncertainty of the 850um sourcearcsecpos.angDistancefloat