II/258ivo://CDS.VizieR/II/258CDSBeckwith S.V.W.2018-02-01T11:50:43Z2009-04-22T15:35:05ZCDS support team

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

cds-question@unistra.frhst-photometrysurveysgalaxiescatalogsThe Hubble Ultra Deep Field (PI: Steven V. W. Beckwith) is a 400-orbit Cycle 12 program to image a single field of the Wide Field Camera (WFC) of the Advanced Camera for Surveys (ACS) in four filters: F435W (B), F606W (V), F775W (i), and F850LP (z). The observations took place over 4 months from September 2003 to January 2004 under two program IDs: 9978 and 10086. The observations consist of half-orbit exposures, cycling through each of the filters in a 4-point dither pattern to provide sub-pixel sampling, as well as a larger-scale 3-point line pattern to cover the 2 second of arc gap between the two ACS/WFC chips. The total exposure times are summarized below, with typical exposure times of 1200s for individual images. The AB magnitude zero-points for ACS are current as of March 2004. --------------------------------------------------------------- Number of Number of Total Exp. AB mag. Orbits Exposures Time (s) zero-point --------------------------------------------------------------- B (F435W): 56 112 134880 25.673 V (F606W): 56 112 135320 26.486 i (F775W): 144 288 347110 25.654 z (F850LP): 144 288 346620 24.862 --------------------------------------------------------------- More details are found in the "intro.txt" file, or from the UDF home page.Space Telescope Science Institute (2004)https://cdsarc.cds.unistra.fr/viz-bin/cat/II/258CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/253 : Chandra Deep Field South: multi-colour data (Wolf+, 2004)http://cadcwww.hia.nrc.ca/udf/ : Ultra Deep Field High-Level Science Productshttp://www.stsci.edu/hst/udf : Ultra Deep Field Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/258https://vizier.iucaa.in/viz-bin/VizieR-2?-source=II/258http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=II/258https://vizier.cds.unistra.fr/viz-bin/votable?-source=II/258https://vizier.iucaa.in/viz-bin/votable?-source=II/258http://vizieridia.saao.ac.za/viz-bin/votable?-source=II/258GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table II/258/udf-i (The Ultra-Deep Field Catalog from F775W image)https://vizier.cds.unistra.fr/viz-bin/conesearch/II/258/udf-i?https://vizier.iucaa.in/viz-bin/conesearch/II/258/udf-i?http://vizieridia.saao.ac.za/viz-bin/conesearch/II/258/udf-i?GETtext/xml+votable180.050000true53.1655096-27.82847920.005555555555555556Cone search capability for table II/258/udf-z (The Ultra-Deep Field Catalog from F850LP image)https://vizier.cds.unistra.fr/viz-bin/conesearch/II/258/udf-z?https://vizier.iucaa.in/viz-bin/conesearch/II/258/udf-z?http://vizieridia.saao.ac.za/viz-bin/conesearch/II/258/udf-z?GETtext/xml+votable180.050000true53.165509-27.82848160.005555555555555556HST6/35935https://cdsarc.cds.unistra.fr/viz-bin/moc/II/258?format=asciiOpticaldefaultII/258/udf-iThe Ultra-Deep Field Catalog from F775W imagerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintUDFRunning number (G1)meta.id;meta.mainintXposPosition of the source (toward East)pixpos.cartesian.x;instr.detfloatYposPosition of the source (toward North)pixpos.cartesian.y;instr.detfloatRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainTheta[-90,+90] source orientation "Theta" (counterclockwise from the X-axis = PA-90)degpos.posAngfloatellEllipticity (1-b/a)src.ellipticityfloatR50Half-light radiuspixphys.angSize;srcfloatFWHMFWHM of a Gaussian fit to each sourcepixphys.angSize;meta.modelledfloatStyStellarity (1 for point sources, 0 for fully resolved sources)src.class.starGalaxyfloatBmag? AB magnitude in F435W filter (2)magphot.mag;em.opt.Bfloatnullablee_Bmag? Formal error on Bmagmagstat.error;phot.mag;em.opt.BfloatnullableBs/nSignal to Noise ratio in F435W filterstat.likelihood;obsfloatVmag? AB magnitude in F606W filter (2)magphot.mag;em.opt.Rfloatnullablee_Vmag? Formal error on Vmagmagstat.error;phot.mag;em.opt.VfloatnullableVs/nSignal to Noise ratio in F606W filterstat.likelihood;obsfloatimag? AB magnitude in F775W filter (2)magphot.mag;em.opt.Ifloatnullablee_imag? Formal error on imagmagstat.error;phot.mag;em.opt.Ifloatnullableis/nSignal to Noise ratio in F775W filterstat.likelihood;obsfloatzmag? AB magnitude in F850LP filter (2)magphot.mag;em.opt.Ifloatnullablee_zmag? Formal error on zmagmagstat.error;phot.mag;em.opt.Ifloatnullablezs/nSignal to Noise ratio in F850LP filterstat.likelihood;obsfloatFlagsSExtractor flags (1)meta.codeintII/258/udf-zThe Ultra-Deep Field Catalog from F850LP imageis/nSignal to Noise ratio in F775W filterstat.likelihood;obsfloatRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainzmag? AB magnitude in F850LP filter (2)magphot.mag;em.opt.IfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintUDFRunning number (G1)meta.id;meta.mainintXposPosition of the source (toward East)pixpos.cartesian.x;instr.detfloatYposPosition of the source (toward North)pixpos.cartesian.y;instr.detfloatDEJ2000Declination (J2000)degpos.eq.dec;meta.mainTheta[-90,+90] source orientation "Theta" (counterclockwise from the X-axis = PA-90)degpos.posAngfloatellEllipticity (1-b/a)src.ellipticityfloatR50Half-light radiuspixphys.angSize;srcfloatFWHMFWHM of a Gaussian fit to each sourcepixphys.angSize;meta.modelledfloatStyStellarity (1 for point sources, 0 for fully resolved sources)src.class.starGalaxyfloatBmag? AB magnitude in F435W filter (2)magphot.mag;em.opt.Bfloatnullablee_Bmag? Formal error on Bmagmagstat.error;phot.mag;em.opt.BfloatnullableBs/nSignal to Noise ratio in F435W filterstat.likelihood;obsfloatVmag? AB magnitude in F606W filter (2)magphot.mag;em.opt.Rfloatnullablee_Vmag? Formal error on Vmagmagstat.error;phot.mag;em.opt.VfloatnullableVs/nSignal to Noise ratio in F606W filterstat.likelihood;obsfloatimag? AB magnitude in F775W filter (2)magphot.mag;em.opt.Ifloatnullablee_imag? Formal error on imagmagstat.error;phot.mag;em.opt.Ifloatnullablee_zmag? Formal error on zmagmagstat.error;phot.mag;em.opt.Ifloatnullablezs/nSignal to Noise ratio in F850LP filterstat.likelihood;obsfloatFlagsSExtractor flags (1)meta.codeint