J/MNRAS/345/747ivo://CDS.VizieR/J/MNRAS/345/747doi:10.26093/cds/vizier.73450747CDSMackey A.D.Gilmore G.F.2024-06-29T20:14:31Z2004-10-16T14:55:57ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvariable-starsphotometryWe have surveyed four of the globular clusters in the Fornax dwarf galaxy (clusters 1, 2, 3 and 5) for RR Lyrae stars, using archival F555W and F814W Hubble Space Telescope observations. We identify 197 new RR Lyrae stars in these four clusters, and 13 additional candidate horizontal-branch variable stars. Although somewhat restricted by our short observational baseline, we derive periods and light curves for all of the stars in the sample, and calculate photometric parameters such as mean magnitudes and colours. This is the first time that RR Lyrae stars in the Fornax globular clusters have been quantitatively identified and measured.2003MNRAS.345..747Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/345/747CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/345/747https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/345/747http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/345/747https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/345/747https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/345/747http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/345/747GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/MNRAS/345/747/table2Measured and calculated properties of the RR Lyrae stars.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[MG2003]Name (FNVNN)meta.id;meta.maincharChipChip number (0=PC, 1-3=WFC2-4)meta.id;instrintXpixX position relative to the reference image (1)pixpos.cartesian.x;instr.detfloatYpixY position relative to the reference image (1)pixpos.cartesian.y;instr.detfloatRadRadius used to adjust the local backgroundarcsecstat.fit.paramfloatalphacDetection completeness fractionmeta.notefloatPerPerioddtime.periodfloatn_Per[*] *: lower-limit measurement of the periodmeta.notecharTypeRR Lyrae typemeta.code;src.varcharNtLabel of the best-fitting template (2)meta.id;stat.fitintrmsrms noisemagstat.errorfloat<V>Mean V magnitudemagphot.mag;em.opt.Vfloat<I>Mean I magnitudemagphot.mag;em.opt.Ifloat<V-I>Mean V-I colour index (3)magphot.color;em.opt.V;em.opt.IfloatNoNumber of pairs of observationmeta.numberintVmaxMaximum V magnitudemagphot.mag;em.opt.VfloatVminMinimum V magnitudemagphot.mag;em.opt.VfloatDeltaVAmplitude of the V variabilitymagsrc.var.amplitudefloatEpochMaxMJD Epoch of maximum (JD-2400000.5)dtime.epochdouble(V-I)m? Mean V-I colour at the minimum lightmagphot.color;em.opt.V;em.opt.Ifloatnullablee_(V-I)m? rms uncertainty on (V-I)mmagstat.errorfloatnullableo_(V-I)m? Number of observation at minimum lightmeta.numberintnullableJ/MNRAS/345/747/table3Photometric measurements for the candidate RR Lyrae starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[MG2003]Name (FnCNN)meta.id;meta.maincharChipChip numbermeta.id;instrintXpixX position relative to the reference imagepixpos.cartesian.x;instr.detfloatYpixY position relative to the reference imagepixpos.cartesian.y;instr.detfloatRadRadiusarcsecstat.fit.paramfloatalphacCompleteness fraction (1)meta.notefloat<V>Mean V magnitudemagphot.mag;em.opt.Vfloat<I>Mean I magnitudemagphot.mag;em.opt.IfloatNoNumber of pairs of observationmeta.numberintVmaxMaximum V magnitudemagphot.mag;em.opt.VfloatVminMinimum V magnitudemagphot.mag;em.opt.VfloatDeltaVAmplitude of the V variabilitymagsrc.var.amplitudefloat