J/MNRAS/541/3146ivo://CDS.VizieR/J/MNRAS/541/3146doi:10.26093/cds/vizier/bg-gx-32aCDSArellano Ferro A.Michel R.Yepez M.A.Muneer S.Bustos Fierro I.,Prudil Z.2026-08-03T07:33:27Z2025-12-10T10:55:16ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvariable-starsccd-photometryvisible-astronomyWe present new time-series CCD VR photometry of the globular cluster NGC 5634. We aim to use the known RR Lyrae stars, members of the cluster, as indicators of mean metallicity and distance. Accurate coordinates, periods, and an identification chart of the variables in the field of our images are provided. A membership analysis was performed, based on Gaia-DR3 proper motions, for 3525 point sources within 15 arcmin from the cluster centre. The membership status for each known variable was established and it was found that V10, V11, and V16 are most likely field stars. The variability of the RRab star V7, considered non-variable for a number of years, is demonstrated. Via the Fourier decomposition of the light curves of cluster member RR Lyrae, the mean metallicity and distance were calculated independently from RRab and RRc stars to find [Fe/H]_ZW_=-1.67+/-0.11 and D=23.9+/-0.8kpc, and [Fe/H]_ZW_=-1.69+/-0.22 and D=22.9+/-1.0kpc, respectively.2025MNRAS.541.3146Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/541/3146CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/102/17 : V light curves of variable stars in NGC 6229 (Baade+, 1945)J/AJ/124/915 : VI photometry of NGC 5634 (Bellazzini+, 2002)J/A+A/579/A104 : Abundances in NGC 5053 and NGC 5634 (Sbordone+, 2015)J/A+A/600/A118 : Abundances of red giant stars in NGC6093 (Carretta+, 2027)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/541/3146https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/541/3146http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/541/3146https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/541/3146https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/541/3146http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/541/3146GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/541/3146/table1 (General data of the variables in the FoV of NGC 5634)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/541/3146/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/541/3146/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/541/3146/table1?GETtext/xml+votable180.050000true217.389625-5.98242220.0055555555555555566/258732.762881831355591e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/541/3146?format=asciiOpticaldefaultJ/MNRAS/541/3146/table1General data of the variables in the FoV of NGC 5634recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLCShow the light curvesmeta.ref.urlcharVNameVariable name (V1-V21, G1-G6)meta.id;meta.maincharGaiaDR3Gaia source numbermeta.idTypeVariable Typemeta.code;src.varchar<Vmag>? Intensity weighted mean V magnitudemagphot.mag;em.opt.Vfloatnullableu_<Vmag>Uncertainty flag on <Vmag>meta.code.error;pos.cartesian.ychar<Rmag>? Intensity weighted mean R magnitudemagphot.mag;em.opt.Rfloatnullableu_<Rmag>Uncertainty flag on <Rmag>meta.code.errorcharAmpV? V amplitudemagsrc.var.amplitudefloatnullableAmpR? R amplitudemagsrc.var.amplitudefloatnullableu_AmpRUncertainty flag on AmpRmeta.code.errorcharPer? Perioddtime.perioddoublenullableEpoch? Epoch of maximum (HJD-2460000)dtime.epochdoublenullableRAJ2000Right Ascencion (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainMemb[m/f] Membership statusmeta.code.membercharlc[+] + indicates light curves data in table 2meta.codecharSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/MNRAS/541/3146/table2VR photometry for V1, V2, V3, V7, V13, V17, V18, V19 and VI photometry for V4, V5, V6 and V8 members of NGC 5634recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVNameVariable namemeta.id;meta.maincharFilter[VRI] Observation filter (1)obs.param;obscharHJDHeliocentric Julian datedtime.epochdoublemagstdStandard magnitudemagphot.magfloatmaginstInstrumental magnitudemagphot.magfloate_maginstError on the magnitudemagstat.errorfloat