J/AJ/117/247ivo://CDS.VizieR/J/AJ/117/247doi:10.26093/cds/vizier.51170247CDSStetson P.B.Bolte M.Harris W.E.Hesser J.E.Van den Bergh S.,Vandenberg D.A.Bell R.A.Johnson J.A.Bond H.E.Fullton L.K.,Fahlamn G.G.Richer H.B.2023-04-06T16:50:33Z2000-04-12T21:19:22ZCDS support team

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

cds-question@unistra.frglobular-star-clustershertzsprung-russell-diagramphotometryWe have used the Wide Field Planetary Camera 2 on the Hubble Space Telescope to obtain photometry of the outer halo globular clusters Palomar 3, Palomar 4, and Eridanus. These three are classic examples of the "second-parameter" anomaly because of their red horizontal-branch morphologies in combination with their low-to-intermediate metallicities. Our color-magnitude diagrams (CMDs) in V, V - I reach V_lim_ {=~} 27.0, clearly delineating the subgiant and turnoff regions and about 3 mag of the unevolved main sequences.1999AJ....117..247Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/117/247CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/37 : UBV HR Diagrams of Globular Clusters (Philip+ 1976)II/117 : Catalog of UBVRI Photometry of Globular Clusters (Peterson 1986)VII/103 : Catalogue of galactic globular clustersJ/A+A/320/757 : M3 stars CCD photometry (Ferraro+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/117/247https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/117/247http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/117/247https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/117/247https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/117/247http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/117/247GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapHSTOpticaldefaultJ/AJ/117/247/table2Normal points for program clustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNameGlobular cluster namecharVmagMean V band magnitude of stars found in each binmagfloate_VmagUncertainty in VmagmagfloatV-IMean V-I color of stars found in each binmagfloate_V-IUncertainty in V-ImagfloatIter1Number of stars per bin retained in the 1st iteration of {sigma}-clippingintIter2Number of stars per bin retained in the 2nd iteration of {sigma}-clippingintIter3Number of stars per bin retained in the 3rd iteration of {sigma}-clippingint