J/ApJS/120/265ivo://CDS.VizieR/J/ApJS/120/265doi:10.26093/cds/vizier.21200265CDSIbata R.A.Richer H.B.Fahlman G.G.Bolte M.Bond H.E.Hesser J.E.,Pryor C.Stetson P.B.2002-08-23T07:01:58Z2002-08-23T07:00:56ZCDS support team

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

cds-question@unistra.frglobular-star-clustersinfrared-photometryvisible-astronomybroad-band-photometryThis paper presents a detailed description of the acquisition and processing of a large body of imaging data for three fields in the globular cluster M4 taken with the Wide Field and Planetary Camera 2 aboard the Hubble Space Telescope. Analysis with the ALLFRAME package yielded the deepest photometry yet obtained for this cluster. The resulting data set for 4708 stars (positions and calibrated photometry in V, I, and, in two fields, U) spanning approximately six cluster core radii is presented. The scientific analysis is deferred to three companion papers, which investigate the significant white dwarf population discovered and the main-sequence population.1999ApJS..120..265Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/120/265CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/120/265https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/120/265http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/120/265https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/120/265https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/120/265http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/120/265GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/120/265/table5 (The photometry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/120/265/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/120/265/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/120/265/table5?GETtext/xml+votable180.050000true245.90794-26.529230.005555555555555556HST6/42955https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/120/265?format=asciiOpticalInfrareddefaultJ/ApJS/120/265/table5The photometryIRFIdentification number (Cl* NGC 61621 IRF NNNN)meta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintField[016] Field number (1)obs.fieldcharChip[1/4] Chip number (2)meta.id;instrintClass[0] Visual classification (3)src.class.starGalaxyintxposx position (4)pixpos.cartesian.x;instr.detfloatyposy position (4)pixpos.cartesian.y;instr.detfloatRA2000Right ascension (2000)degpos.eq.ra;meta.mainDE2000Declination (2000)degpos.eq.dec;meta.mainF336W? F336W magnitudemagphot.mag;em.opt.UfloatnullableUmag? U magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? rms uncertainty on Umagmagstat.errorfloatnullable2_Umag? {chi}-value associated to Umagstat.fit.chi2floatnullableF555WF555W magnitudemagphot.mag;em.opt.VfloatVmagJohnson V magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.errorfloat2_Vmag{chi}-value associated to Vmagstat.fit.chi2floatF814WF814W magnitudemagphot.mag;em.opt.IfloatImagKron-Cousins I magnitudemagphot.mag;em.opt.Ifloate_Imagrms uncertainty on Imagmagstat.errorfloat2_Imag{chi}-value associated to Imagstat.fit.chi2float