J/ApJ/703/2033ivo://CDS.VizieR/J/ApJ/703/2033doi:10.26093/cds/vizier.17032033CDSRafelski M.Wolfe A.M.Cooke J.Chen H.-W.Armandroff T.E.Wirth G.D.2017-07-04T07:07:56Z2011-12-15T14:27:12ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsredshiftednarrow-band-photometryhst-photometryWe present a sample of 407 z~3 Lyman break galaxies (LBGs) to a limiting isophotal u-band magnitude of 27.6mag in the Hubble Ultra Deep Field. The LBGs are selected using a combination of photometric redshifts and the u-band drop-out technique enabled by the introduction of an extremely deep u-band image obtained with the Keck I telescope and the blue channel of the Low Resolution Imaging Spectrometer. The Keck u-band image, totaling 9hr of integration time, has a 1{sigma} depth of 30.7mag/arcsec^2^, making it one of the most sensitive u-band images ever obtained. The u-band image also substantially improves the accuracy of photometric redshift measurements of ~50% of the z~3 LBGs, significantly reducing the traditional degeneracy of colors between z~3 and z~0.2 galaxies.2009ApJ...703.2033Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/703/2033CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)II/258 : Hubble Ultra Deep Field Catalog (UDF) (STScI, 2004)J/A+A/478/83 : GOODS-South Field VLT/FORS2 redshifts. III. (Vanzella+, 2008)J/AJ/134/169 : Redshifts of UDF emission-line objects (Xu+, 2007)J/AJ/132/1729 : Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006)J/AJ/132/926 : Galaxies in the Hubble Ultra Deep Field (Coe+, 2006)J/A+A/454/423 : GOODS-South Field VLT/FORS2 redshifts. II. (Vanzella+, 2006)J/ApJ/639/724 : Tadpole galaxies in the Hubble UDF (Straughn+, 2006)J/AJ/130/1 : Catalog of source parameters in NICMOS UDF (Thompson+, 2005)J/A+A/434/53 : GOODS-South Field redshifts (Vanzella+, 2005)J/ApJS/150/1 : VV29 and NGC 4676 HST photometry (Benitez+, 2004)J/A+A/428/1043 : Redshifts from VIMOS VLT Deep Survey (Le Fevre+, 2004)J/ApJS/155/271 : Chandra Deep Field-South: Optical spectroscopy (Szokoly+,https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/703/2033https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/703/2033http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/703/2033https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/703/2033https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/703/2033http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/703/2033GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/703/2033/catalog (Catalog of u-band objects with their photometric redshift)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/703/2033/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/703/2033/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/703/2033/catalog?GETtext/xml+votable180.050000true53.1655119-27.82847970.0055555555555555566/359352.76124552865182e-19 5.842483835062525e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/703/2033?format=asciiOpticaldefaultJ/ApJ/703/2033/table4Catalog of z~3 LBGs in the UDFV-z'(V-z') isophotal color (2)magphot.color;em.opt.V;em.opt.IfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[CBS2006]ID from Coe et al. catalog (G1)meta.id;meta.mainintzbBPZ most likely redshiftsrc.redshift.photfloate_zbLower limit (95% confidence) in zbstat.errorfloatE_zbUpper limit (95% confidence) in zbstat.error;stat.maxfloatchimodModified chi^2^: includes model uncertaintiesstat.fit.chi2floatoddsP(z) contained within 0.1*(1+zb)stat.fit.goodnessfloattype[1,3] Type of LBG selection (1)meta.idintVmagTotal V band AB magnitude (2)magphot.mag;em.opt.Rfloate_Vmag{sigma} uncertainty in Vmagmagstat.error;phot.mag;em.opt.Vfloatu-V(u-V) isophotal color (2)magphot.color;em.opt;em.optfloate_u-V{sigma} uncertainty in u-Vmagstat.error;phot.color;em.opt.Ufloatu-B(u-B) isophotal color (2)magphot.color;em.opt.U;em.opt.Bfloate_u-B{sigma} uncertainty in u-Bmagstat.error;phot.color;em.opt.Ufloate_V-z'{sigma} uncertainty in V-z'magstat.errorfloatJ/ApJ/703/2033/catalogCatalog of u-band objects with their photometric redshiftrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[CBS2006]ID from Coe et al. catalog (G1)meta.id;meta.mainintprimaryn_[CBS2006]Simbad column added by the CDSmeta.ref.urlcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainumagKeckI/LRIS u-band (~3400{AA}) total magnitude (1)magphot.mag;em.opt.Ufloate_umag{sigma} of magnitude in u-bandmagstat.error;phot.mag;em.opt.UfloatS/NSignal to noise ratio of u-band fluxstat.snrfloatCovIDID of most significant neighbor affecting photometrymeta.idintCovIdxAbsolute value of ratio of Variance and covariancestat.value;arith.ratiofloatFRatioRatio of V-band fluxes of object and most significant neighborphot.flux;arith.ratiofloatDistDistance to most significant neighborarcsecpos.angDistancefloatUDFNumber of sources within 1.5" in UDF catalogs J/A+A/478/83, J/AJ/132/1729 and J/AJ/130/1meta.numberintnullableCBS06Display data from Coe et al. 2006, Cat. J/AJ/132/926meta.ref.urlcharSimbadSimbad column added by the CDScharzbBayesian Photo-Z (BPZ) most likely redshiftsrc.redshift.photfloatb_zbLower limit (95% confidence) in zbstat.fit.paramfloatB_zbUpper limit (95% confidence) in zbstat.fit.paramfloattbBPZ most likely spectral type (1)meta.code.classfloatoddsP(z) contained within 0.1*(1+zb) (2)stat.fit.goodnessfloatchinuQuality of BPZ fit: observed vs. model fluxesstat.fit.chi2floatchimodModified chi^2^ (includes model uncertainties)stat.fit.chi2floatzb1BPZ most-likely redshiftsrc.redshift.photfloatb_zb1Lower bound zb1min for highest peak in P(z)meta.notefloatB_zb1Upper bound zb1max for highest peak in P(z)meta.notefloatodds1P(z) between zb1min and zb1maxstat.fit.goodnessfloatzb2? BPZ 2nd-most-likely redshift (3)src.redshift.photfloatnullableb_zb2? Lower bound for 2nd-highest peak in P(z) (3)meta.notefloatnullableB_zb2? Upper bound for 2nd-highest peak in P(z) (3)meta.notefloatnullabletb2? BPZ 2nd-most-likely spectral type (2)(3)meta.code.classfloatnullableodds2? P(z) between zb2min and zb2max (3)stat.fit.goodnessfloatnullableJ/ApJ/703/2033/table3Catalog of galaxies with reliable spectroscopic redshifts in the UDFe_u-B{sigma} uncertainty in u-Bmagstat.error;phot.color;em.opt.UfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[CBS2006]ID from Coe et al. catalog (G1)meta.id;meta.mainintr_zspDenotes the survey for zsp (1)meta.ref;pos.framecharzspSpectroscopic redshiftsrc.redshiftfloatzbBPZ most likely redshiftsrc.redshift.photfloate_zbLower limit (95% confidence) in zbstat.errorfloatE_zbUpper limit (95% confidence) in zbstat.error;stat.maxfloatchimodModified chi^2^ (includes model uncertainties)stat.fit.chi2floatoddsP(z) contained within 0.1*(1+zb)stat.fit.goodnessfloatVmagTotal V band AB magnitude (2)magphot.mag;em.opt.Rfloate_Vmag{sigma} uncertainty in Vmagmagstat.error;phot.mag;em.opt.Vfloatu-V(u-V) isophotal color index (2)magphot.color;em.opt;em.optfloate_u-V{sigma} uncertainty in u-Vmagstat.error;phot.color;em.opt.Ufloatu-B(u-B) isophotal color index (2)magphot.color;em.opt.U;em.opt.BfloatV-z'(V-z') isophotal color index (2)magphot.color;em.opt.V;em.opt.Ifloate_V-z'{sigma} uncertainty in V-z'magstat.errorfloat