J/AJ/132/926ivo://CDS.VizieR/J/AJ/132/926doi:10.26093/cds/vizier.51320926CDSCoe D.Benitez N.Sanchez S.F.Jee M.Bouwens R.Ford H.2017-07-03T14:26:51Z2009-11-19T09:02:11ZCDS support team

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

cds-question@unistra.frsurveysgalaxiesphotometryWe present aperture-matched point-spread function (PSF)corrected BVi'z'JH photometry and Bayesian photometric redshifts (BPZ) for objects detected in the Hubble Ultra Deep Field (UDF), 8042 of which are detected at the 10 level (e.g., i'<29.01 or z'<28.43). Most of our objects are defined identically to those in the public STScI catalogs, enabling a straightforward object-by-object comparison. We have combined detections from i', z', J+H, and B+V+i'+ z' images into a single comprehensive segmentation map. Using a new program called SExSeg, we are able to force this segmentation map into SExtractor for photometric analysis. The resulting photometry is corrected for the wider NIC3 PSFs using our ColorPro software. We also correct for the ACS z'-band PSF halo. Offsets are applied to our NIC3 magnitudes, which are found to be too faint relative to the ACS fluxes. Based on BPZ spectral energy distribution (SED) fits to objects of known spectroscopic redshift, we derived corrections of -0.30+/-0.03mag in J and -0.18+/-0.04mag in H. Our offsets appear to be supported by a recent recalibration of the UDF NIC3 images combined with nonlinearity measured in NICMOS itself. The UDF reveals a large population of faint blue galaxies (presumably young starbursts), bluer than those observed in the original Hubble Deep Fields.2006AJ....132..926Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/132/926CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/258 : Hubble Ultra Deep Field Catalog (UDF) (STScI, 2004)J/AJ/130/1 : Catalog of source parameters in NICMOS UDF (Thompson+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/132/926https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/132/926http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/132/926https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/132/926https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/132/926http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/132/926GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/132/926/catalog (Detection and photometric catalog, with Bayesian photometric redshifts)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/132/926/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/132/926/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/132/926/catalog?GETtext/xml+votable180.050000true53.16551194-27.828479720.005555555555555556Cone search capability for table J/AJ/132/926/table5 (Morphology in the i-band image)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/132/926/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/132/926/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/132/926/table5?GETtext/xml+votable180.050000true53.16550833-27.828479720.0055555555555555566/35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/132/926?format=asciiOpticaldefaultJ/AJ/132/926/catalogDetection and photometric catalog, with Bayesian photometric redshiftsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[CBS2006]Number the corresponds to STScI catalogs (G1)meta.id;meta.mainintprimaryf_[CBS2006][-1/6] Whether STScI segment was altered (2)meta.codeintSTidiffOur i MAG_ISO minus Beckwith's (3)magphot.mag;arith.diffdoubleareaSegment sizepixsrc.morph.scLengthintXpixx pixel coordinate in STScI ACS imagespixpos.framedoubleYpixy pixel coordinate in STScI ACS imagespixpos.framedoublewfcexpDepth in ACS image: 1=mean; we prune > 0.5instr.paramfloatsigSignificance of most significant detectionstat.fit.goodnessfloatstelSExtractor stellarity in i-band (1=star)src.class.starGalaxyfloatMSimbad column added by the CDSmeta.ref.urlcharUDF[UDF:] Display data from UDF catalog, Cat. II/258meta.ref.urlcharBmag? ACS F435W band total AB magnitude (2)magphot.mag;em.opt.Bfloatnullablee_Bmag? Error in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmag? ACS F606W band total AB magnitude (2)magphot.mag;em.opt.Rfloatnullablee_Vmag? Error in Vmagmagstat.error;phot.mag;em.opt.Vfloatnullableimag? ACS F775W band total AB magnitude (2)magphot.mag;em.opt.Ifloatnullablee_imag? Error in imagmagstat.error;phot.mag;em.opt.Ifloatnullablezmag? ACS F850LP band total AB magnitude (2)magphot.mag;em.opt.Ifloatnullablee_zmag? Error in zmagmagstat.error;phot.mag;em.opt.IfloatnullableJmag? NIC3 F110W band total AB magnitude (2)magphot.mag;em.IR.Jfloatnullablee_Jmag? Error in Jmagmagstat.error;phot.mag;em.IR.JfloatnullableHmag? NIC3 F160W band total AB magnitude (2)magphot.mag;em.IR.Hfloatnullablee_Hmag? Error in Hmagmagstat.error;phot.mag;em.IR.HfloatnullablezbBPZ most likely redshiftsrc.redshift.photfloatzbminLower limit (95% confidence)src.redshift.photfloatzbmaxUpper limit (95% confidence)src.redshift.photfloattbBPZ most likely spectral typesrc.spTypefloatoddsProbability distribution, P(z), contained within 2*0.06*(1+z)stat.probabilityfloatchi2Poorness of BPZ fit: observed vs. model fluxesstat.fit.chi2floatchi2bModified chi2: model fluxes given error barsstat.fit.chi2floatzb1min? Lower bound for highest peak in P(z) (2)src.redshift.photfloatnullablezb1max? Upper bound for highest peak in P(z) (2)src.redshift.photfloatnullableodds1? Probability distribution, P(z), within zb1min..zb1max (2)stat.probabilityfloatnullablezb2? BPZ 2nd-most-likely redshift (2)src.redshift.photfloatnullablezb2min? Lower bound for 2nd-highest peak in P(z) (2)src.redshift.photfloatnullablezb2max? Upper bound for 2nd-highest peak in P(z) (2)src.redshift.photfloatnullabletb2? BPZ 2nd-most-likely spectral type (2)src.spTypefloatnullableodds2? Probability distribution, P(z), within zb2min..zb2max (2)stat.probabilityfloatnullablezb3? BPZ 3rd-most-likely redshift (2)src.redshift.photfloatnullablezb3min? Lower bound for 3rd-highest peak in P(z) (2)src.redshift.photfloatnullablezb3max? Upper bound for 3rd-highest peak in P(z) (2)src.redshift.photfloatnullabletb3? BPZ 3rd-most-likely spectral type (2)src.spTypefloatnullableodds3? Probability distribution, P(z), within zb3min..zb3max (2)stat.probabilityfloatnullableL_zbMaximum Likelihood of most likely redshiftstat.likelihood;src.redshiftfloatL_tbMaximum Likelihood of most likely spectral typestat.likelihood;src.spTypefloatRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainJ/AJ/132/926/table5Morphology in the i-band imagerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[CBS2006]Number that corresponds to Beckwith et al. catalog (Cat. <II/258>, UDF NNNNN)meta.number;phys.atmol.numberintchi2Poorness of GALFIT fitstat.fit.param;meta.modelleddoubleimag? ACS F775W band magnitude fitmagphot.mag;em.opt.Ifloatnullablee_imag? Error in imagmagstat.error;phot.mag;em.opt.IfloatnullablereffEffective radiuspixphys.angSizefloate_reffError in reffpixstat.errorfloata/bEllipticity a/bphys.size.axisRatiofloate_a/bError in a/bstat.errordoublePA[-90/90] Position angledegpos.posAngfloate_PAError in PAdegstat.errordoublenserSersic index n (f(r){prop.to}r^1/n^)stat.fit.paramfloate_nserError in nserstat.errorfloatXpixFit x pixel coordinate in STScI ACS imagespixpos.framedoubleYpixFit y pixel coordinate in STScI ACS imagespixpos.framedoubleDistDistance between fit and Beckwith coordinates (1)pixpos;arith.diffdoubleasymAsymmetry: image vs. 180-degree rotatedsrc.morph.paramfloatUDF[UDF:] Display data from UDF catalog, Cat. II/258meta.ref.urlcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.main