J/MNRAS/451/2303ivo://CDS.VizieR/J/MNRAS/451/2303doi:10.26093/cds/vizier.74512303CDSSobral D.Matthee J.Best P.N.Smail I.Khostovan A.A.,Milvang-Jensen B.Kim J.-W.Stott J.Calhau J.Nayyeri H.Mobasher B.2024-08-14T20:22:15Z2016-02-12T10:15:04ZCDS support team

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

cds-question@unistra.frsurveysgalaxiesspectroscopyphotometryline-intensitiesWe present results from the largest contiguous narrow-band survey in the near-infrared. We have used the wide-field infrared camera/Canada-France-Hawaii Telescope and the lowOH2 filter (1.187+/-0.005{mu}m) to survey ~10deg^2^ of contiguous extragalactic sky in the SA22 field. A total of ~6000 candidate emission-line galaxies are found. We use deep ugrizJK data to obtain robust photometric redshifts. We combine our data with the High-redshift(Z) Emission Line Survey (HiZELS), explore spectroscopic surveys (VVDS, VIPERS) and obtain our own spectroscopic follow-up with KMOS, FMOS and MOSFIRE to derive large samples of high-redshift emission-line selected galaxies: 3471 H{alpha} emitters at z=0.8, 1343 [OIII] + H{beta} emitters at z=1.4 and 572 [OII] emitters at z=2.2. We probe comoving volumes of >10^6^Mpc^3^ and find significant overdensities, including an 8.5{sigma} (spectroscopically confirmed) overdensity of H{alpha} emitters at z=0.81. We derive H{alpha}, [OIII] + H{beta} and [OII] luminosity functions at z=0.8, 1.4, 2.2, respectively, and present implications for future surveys such as Euclid. Our uniquely large volumes/areas allow us to subdivide the samples in thousands of randomized combinations of areas and provide a robust empirical measurement of sample/cosmic variance. We show that surveys for star-forming/emission-line galaxies at a depth similar to ours can only overcome cosmic-variance (errors <10 percent) if they are based on volumes >5x10^5^Mpc^3^; errors on L* and {phi}* due to sample (cosmic) variance on surveys probing ~10^4^ and ~10^5^Mpc^3^ are typically very high: ~300 and ~40-60 percent, respectively.2015MNRAS.451.2303Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/451/2303CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/451/2303https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/451/2303http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/451/2303https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/451/2303https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/451/2303http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/451/2303GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/451/2303/tablea1 (The catalogue of all Sigma>3 NB sources selected in the SA22 field from this paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/451/2303/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/451/2303/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/451/2303/tablea1?GETtext/xml+votable180.050000true333.763940.316620.0055555555555555565/4758-4759 6/19021 19023 19025-19028 19030-19031 19056-19057 19059-190601.489977759996881e-19 1.692669228152603e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/451/2303?format=asciiOpticaldefaultJ/MNRAS/451/2303/tablea1The catalogue of all Sigma>3 NB sources selected in the SA22 field from this paperrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCFHIZELSCFHIZELS identification numbermeta.id;meta.maincharRAJ2000Narrow band right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Narrow band declination (J2000)degpos.eq.dec;meta.mainNBJmagNB_J_ magnitude in 2" aperture (AB)magphot.mag;em.IR.Jfloate_NBJmagrms uncertainty on NBJmagmagstat.error;phot.magfloatJmagUKIDSS J magnitude in 2" aperture (AB)magphot.mag;em.IR.Jfloate_Jmagrms uncertainty on Jmagmagstat.error;phot.mag;em.IR.JfloatSigmaSigma parameter (Bunker et al., 1995MNRAS.273..513B) (1)stat.fit.paramfloatlogFluxFlux of emission lineslog(mW.m**-2)phot.fluxdoubleEWEquivalent width of emission lines0.1nmspect.line.eqWidthdoubleClassClassification flag (2)src.classcharSimbadSimbad column added by the CDSmeta.ref.urlchar