J/ApJS/93/161ivo://CDS.VizieR/J/ApJS/93/161doi:10.26093/cds/vizier.20930161CDSSarajedini A.Norris J.E.1999-02-27T12:05:08Z1999-02-27T13:04:50ZCDS support team

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

cds-question@unistra.frglobular-star-clustersccd-photometryWe present CCD photometry for six metal-rich Galactic globular clusters. The color-magnitude diagrams constructed from these data reach well below the horizontal branch (HB), all of which are predominantly redward of the instability strip. From these diagrams, we have measured the magnitude of the HB, the color of the red giant branch (RGB) at the level of the HB, and the magnitude difference between the HB and the RGB clump. Using these quantities, we are able to study the metallicities and reddenings of these clusters. We also discuss the color distribution of stars on the horizontal branch for these metal-rich systems and compare them with available data for putative field disk red HB stars. There appears to be a dearth of field red HB stars having [Fe/H]~-0.5 and B-V<0.85, which are plentiful in the clusters studied here.1994ApJS...93..161Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/93/161CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/93/161https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/93/161http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/93/161https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/93/161https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/93/161http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/93/161GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJS/93/161/table2NGC 104 photometryVmagV magnitudemagphot.mag;em.opt.VfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequentiql number in the clustermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloate_Vmagrms uncertainty on Vmagmagstat.errorfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.errorfloatJ/ApJS/93/161/table3NGC 5927 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequentiql number in the clustermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.errorfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.errorfloatJ/ApJS/93/161/table4NGC 6352 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequentiql number in the clustermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.errorfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.errorfloatJ/ApJS/93/161/table5NGC 6496 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequentiql number in the clustermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.errorfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.errorfloatJ/ApJS/93/161/table6NGC 6624 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequentiql number in the clustermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.errorfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.errorfloatJ/ApJS/93/161/table7NGC 6637 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequentiql number in the clustermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.errorfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.errorfloatJ/ApJS/93/161/table8Observed quantitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNGCCluster namemeta.id;meta.maincharV(HB)V magnitude of the horizontal branch (HB)magphot.mag;em.opt.Vfloate_V(HB)rms uncertainty on V(HB)magstat.errorfloatV(HB)aV(HB) magnitude from Armandroff (1989AJ.....96..588A)_magphot.mag;em.opt.Vfloat(B-V)gRed giant branch (B-V)g colour index at the level of HBmagphot.color;em.opt.B;em.opt.Vfloate_(B-V)grms uncertainty on (B-V)gmagstat.errorfloat(B-V)gs? (B-V)g colour index from Sandage (1982ApJ...252..553S)magphot.color;em.opt.B;em.opt.VfloatnullableDeltaV? DeltaV(HB)_bump = V(bump) - V(HB)magphot.mag;arith.difffloatnullablee_DeltaV? rms uncertainty on DeltaVmagstat.errorfloatnullablen_DeltaV[c] c: data from Fusi Pecci et al. (1990A&A...238...95F)meta.notecharJ/ApJS/93/161/table9Implications of using Zinn & West (1984ApJS...55...45Z) metallicitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNGCCluster namemeta.id;meta.mainchar[Fe/H]MetallicitySunphys.abund.Fefloate_[Fe/H]rms uncertainty on [Fe/H]Sunstat.errorfloat(B-V)0g(B-V)0,g colour indexmagphot.color;em.opt.B;em.opt.Vfloate_(B-V)0grms uncertainty on (B-V)0gmagstat.errorfloatE(B-V)Reddeningmagphot.color.excessfloate_E(B-V)rms uncertainty on E(B-V)magstat.errorfloatE(B-V)zZinn (1985ApJ...293..424Z) reddeningmagphot.color.excessfloatDeltaV1V(bump) - V(HB) from Lee et al. (1990ApJ...350..155)magphot.mag;arith.difffloate_DeltaV1rms uncertainty on DeltaV1magstat.errorfloatDeltaV2V(bump) - V(HB) from Castellani et al. (1991ApJS...76..911C)magphot.mag;arith.difffloate_DeltaV2rms uncertainty on DeltaV2magstat.errorfloatDeltaV3V(bump) - V(HB) from Sandage (1993AJ....106..703S)magphot.mag;arith.difffloate_DeltaV3rms uncertainty on DeltaV3magstat.errorfloatDeltaVo? Observed V(bump) - V(HB)magphot.mag;arith.difffloatnullablee_DeltaVo? rms uncertainty on DeltaVomagstat.errorfloatnullableJ/ApJS/93/161/table10Simultaneously derived reddenings and metallicities assuming Lee et al. (1990ApJ...350..155)NGCCluster namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[Fe/H]Metallicitylog(Sun)phys.abund.Fefloate_[Fe/H]rms uncertainty on [Fe/H]log(Sun)stat.errorfloatE(B-V)Reddeningmagphot.color.excessfloate_E(B-V)rms uncertainty on E(B-V)magstat.errorfloatDeltaV1.4V(HB) - Vmagphot.mag;arith.difffloate_DeltaV1.4rms uncertainty on DeltaV1.4magstat.errorfloat[Fe/H]zwZinn & West (1984ApJS...55...45Z) metallicitylog(Sun)phys.abund.Fefloate_[Fe/H]zwrms uncertainty on [Fe/H]zwlog(Sun)stat.errorfloatE(B-V)zZinn (1985ApJ...293..424Z) reddeningmagphot.color.excessfloatDeltaVpPredicted V(bump) - V(HB)magphot.mag;arith.difffloate_DeltaVprms uncertainty on DeltaVpmagstat.errorfloatDeltaVo? Observed V(bump) - V(HB)magphot.mag;arith.difffloatnullablee_DeltaVo? rms uncertainty on DeltaVo -------------------------------------------------------------------------------- Table 13. Mean horizontal branch colors ------------------------------------------- Cluster F(B-V) <(B-V)0> Limits ------------------------------magstat.errorfloatnullableJ/ApJS/93/161/table11Simultaneously derived reddenings and metallicities assuming Castellani et al. (1991ApJS...76..911C)NGCCluster namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[Fe/H]Metallicitylog(Sun)phys.abund.Fefloate_[Fe/H]rms uncertainty on [Fe/H]log(Sun)stat.errorfloatE(B-V)Reddeningmagphot.color.excessfloate_E(B-V)rms uncertainty on E(B-V)magstat.errorfloatDeltaV1.4V(HB) - Vmagphot.mag;arith.difffloate_DeltaV1.4rms uncertainty on DeltaV1.4magstat.errorfloat[Fe/H]zwZinn & West (1984ApJS...55...45Z) metallicitylog(Sun)phys.abund.Fefloate_[Fe/H]zwrms uncertainty on [Fe/H]zwlog(Sun)stat.errorfloatE(B-V)zZinn (1985ApJ...293..424Z) reddeningmagphot.color.excessfloatDeltaVpPredicted V(bump) - V(HB)magphot.mag;arith.difffloate_DeltaVprms uncertainty on DeltaVpmagstat.errorfloatDeltaVo? Observed V(bump) - V(HB)magphot.mag;arith.difffloatnullablee_DeltaVo? rms uncertainty on DeltaVo -------------------------------------------------------------------------------- Table 13. Mean horizontal branch colors ------------------------------------------- Cluster F(B-V) <(B-V)0> Limits ------------------------------magstat.errorfloatnullableJ/ApJS/93/161/table12Simultaneously derived reddenings and metallicities assuming Sandage (1993AJ....106..703S)NGCCluster namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[Fe/H]Metallicitylog(Sun)phys.abund.Fefloate_[Fe/H]rms uncertainty on [Fe/H]log(Sun)stat.errorfloatE(B-V)Reddeningmagphot.color.excessfloate_E(B-V)rms uncertainty on E(B-V)magstat.errorfloatDeltaV1.4V(HB) - Vmagphot.mag;arith.difffloate_DeltaV1.4rms uncertainty on DeltaV1.4magstat.errorfloat[Fe/H]zwZinn & West (1984ApJS...55...45Z) metallicitylog(Sun)phys.abund.Fefloate_[Fe/H]zwrms uncertainty on [Fe/H]zwlog(Sun)stat.errorfloatE(B-V)zZinn (1985ApJ...293..424Z) reddeningmagphot.color.excessfloatDeltaVpPredicted V(bump) - V(HB)magphot.mag;arith.difffloate_DeltaVprms uncertainty on DeltaVpmagstat.errorfloatDeltaVo? Observed V(bump) - V(HB)magphot.mag;arith.difffloatnullablee_DeltaVo? rms uncertainty on DeltaVo -------------------------------------------------------------------------------- Table 13. Mean horizontal branch colors ------------------------------------------- Cluster F(B-V) <(B-V)0> Limits ------------------------------magstat.errorfloatnullable