J/AJ/114/1471ivo://CDS.VizieR/J/AJ/114/1471doi:10.26093/cds/vizier.51141471CDSSmith E.O.Michael R.R.Neill J.D.2023-04-06T16:50:26Z1998-03-15T15:23:23ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvisible-astronomybroad-band-photometryWe present new B-V color-magnitude diagrams for Fornax globular cluster 3 and the surrounding field where our data reach one magnitude below the horizontal branch which is at V_HB_=21.28. After subtracting the field stars from the cluster CMD, we found no evidence for an intrinsic width of the red giant branch because the scatter is only slightly wider than the photometric errors. We determine that there is an intrinsic width to the horizontal branch because the scatter is larger than the photometric errors. After comparing our data with earlier photometry, we find 7 possible variable stars, both within and outside the instability strip, out of a total of 74 horizontal branch stars. We calculate the horizontal branch type of cluster 3 to be of intermediate color, -0.110+/-0.104, which when compared to Fornax cluster 1, having similar metallicity, suggests a second-parameter pair. Five carbon star candidates identified by Jorgensen & Jimenez (1997, Cat. <J/A+A/317/54>) are marked in the field-subtracted color-magnitude diagram. (c) 1997 American Astronomical Society.1997AJ....114.1471Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/114/1471CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/317/54 : Fornax cluster 1 and 3 photometry (Jorgensen+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/114/1471https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/114/1471http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/114/1471https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/114/1471https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/114/1471http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/114/1471GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/114/1471/table3 (*Fornax cluster 3 photometry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/114/1471/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/114/1471/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/114/1471/table3?GETtext/xml+votable180.050000true39.9501167-34.13785440.0055555555555555566/35969https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/114/1471?format=asciiOpticaldefaultJ/AJ/114/1471/table3*Fornax cluster 3 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentification number (2)meta.id;meta.mainintXposX pixel coordinate (1)pixpos.cartesian.xfloatYposY pixel coordinate (1)pixpos.cartesian.yfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_VmagV errormagstat.error;phot.mag;em.opt.VfloatB-VB-V colormagphot.color;em.opt.B;em.opt.Vfloate_B-VB-V errormagstat.error;phot.color;em.opt.Bfloat_RAPosition computed from a comparison with catalog 2MASS (II/246) ({sigma}=0.25'') (right ascension part)degpos.eq.ra;meta.main_DEPosition computed from a comparison with catalog 2MASS (II/246) ({sigma}=0.25'') (declination part)degpos.eq.dec;meta.main