J/MNRAS/416/2265ivo://CDS.VizieR/J/MNRAS/416/2265doi:10.26093/cds/vizier.74162265CDSArellano Ferro A.Figuera Jaimes R.Giridhar S.Bramich D.M.,Hernandez Santisteban J.V.Kuppuswamy K.2024-07-15T20:16:37Z2012-05-18T15:25:28ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvariable-starsphotometryWe report CCD V and I time series photometry of the globular cluster NGC 5024 (M53). The technique of difference image analysis has been used which enables photometric precisions better than 10mmag for stars brighter than V~18.5mag even in the crowded central regions of the cluster. The high photometric precision has resulted in the discovery of two new RR1 stars and 13 SX Phe stars. A detailed identification chart is given for all the variable stars in the field of our images of the cluster. Periodicities were calculated for all RR Lyrae and SX Phe stars and a critical comparison is made with previous determinations.2011MNRAS.416.2265Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/416/2265CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/416/2265https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/416/2265http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/416/2265https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/416/2265https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/416/2265http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/416/2265GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/416/2265/table2 (General data for confirmed variables in NGC 5024)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/416/2265/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/416/2265/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/416/2265/table2?GETtext/xml+votable180.050000true198.234666718.12052780.005555555555555556Cone search capability for table J/MNRAS/416/2265/table6 (Frequencies and amplitudes of the newly found SX Phe stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/416/2265/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/416/2265/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/416/2265/table6?GETtext/xml+votable180.050000true198.166666718.14416670.005555555555555556Cone search capability for table J/MNRAS/416/2265/table7 (Blue stragglers whose variability is to be confirmed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/416/2265/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/416/2265/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/416/2265/table7?GETtext/xml+votable180.050000true198.19583318.1730.0055555555555555566/27975 27981 27992https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/416/2265?format=asciiOpticaldefaultJ/MNRAS/416/2265/table2General data for confirmed variables in NGC 5024lcplot of light curvesmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVNameVariable name (V1-V92)meta.id;meta.maincharprimaryFSimbad column added by the CDSmeta.ref.urlcharTypeBailey's typemeta.code;src.varcharOTypeOther typemeta.code;src.varcharPer? Period, this workdtime.perioddoublenullablen_Per[a] a: adopted from Dekany & Kovacs 2009 (Cat. J/A+A/507/803)meta.notecharTmax? Date of maximum light (HJD-2400000)dtime.epochdoublenullablePer2? Period from Jeon et al, 2003AJ....125.3165Jdtime.periodfloatnullablePer3? Period from Kopacki, 2000 Cat. J/A+A/358/547dtime.perioddoublenullablePer4? Period from Dekany & Kovacs, 2009 Cat. J/A+A/507/803dtime.perioddoublenullableRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainDK09Simbad column added by the CDSmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.refcharJ/MNRAS/416/2265/table3Fourier coefficients Ak for k=0,1,2,3,4, and phases {phi}(21, 31 and 41) for the 19 RR0-type and 9 RR1-type variables for which the Fourier decomposition fit was successfulrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[RR0/RR1] Variability typemeta.code;src.varcharVNameVariable star ID (V1-V92)meta.id;meta.maincharA0Fourier coefficient A0 (V mag)magstat.fit.paramfloate_A0rms uncertainty on A0mmagstat.errorintA1Fourier coefficient A1 (V mag)magstat.fit.paramfloate_A1rms uncertainty on A1mmagstat.errorintA2Fourier coefficient A2 (V mag)magstat.fit.paramfloate_A2rms uncertainty on A2mmagstat.errorintA3? Fourier coefficient A3 (V mag)magstat.fit.paramfloatnullablee_A3? rms uncertainty on A3mmagstat.errorintnullableA4? Fourier coefficient A4 (V mag)magstat.fit.paramfloatnullablee_A4? rms uncertainty on A4mmagstat.errorintnullablephi21Phase {phi}_21_radstat.fit.paramfloate_phi21rms uncertainty on phi21mradstat.errorintphi31? Phase {phi}_31_radstat.fit.paramfloatnullablee_phi31? rms uncertainty on phi31mradstat.errorintnullablephi41? Phase {phi}_41_radstat.fit.paramfloatnullablee_phi41? rms uncertainty on phi41mradstat.errorintnullableNNumber of harmonics used to fit the light curve of each variablemeta.numberintDm? Deviation parameter (see Section 4.3)stat.fit.paramfloatnullableJ/MNRAS/416/2265/table6Frequencies and amplitudes of the newly found SX Phe starsFreq1Frequency in mode "Mode1"d**-1time.perioddoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlcplot of light curvesmeta.ref.urlcharVNameVariable name (V93-V105)meta.id;meta.maincharn_VName[a] small amplitude (1)meta.notecharVmagV magnitudemagphot.mag;em.opt.VfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.IfloatRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.maine_Freq1rms uncertainty on Freq11e-05d**-1stat.errorintA1Amplitude in mode "Mode1"magphot.magfloate_A1rms uncertainty on A1mmagstat.errorintPer1Period in mode "Mode1"dtime.perioddoubleMode1First mode identification (2)stat.fit.paramcharFreq2? Frequency in mode "Mode2"d**-1time.perioddoublenullablee_Freq2? rms uncertainty on Freq21e-05d**-1stat.errorintnullableA2? Amplitude in mode "Mode2"magphot.magfloatnullablee_A2? rms uncertainty on Ammagstat.errorintnullablePer2? Period in mode "Mode2"dtime.perioddoublenullableMode2Second mode identification (2)stat.fit.paramcharFreq3? Frequency in mode "Mode3"d**-1time.perioddoublenullablee_Freq3? rms uncertainty on Freq1e-05d**-1stat.errorintnullableA3? Amplitude in mode "Mode3"magphot.magfloatnullablee_A3? rms uncertainty on Ammagstat.errorintnullablePer3? Period in mode "Mode3"dtime.perioddoublenullableMode3Third mode identification (2)stat.fit.paramcharSimbadSimbad column added by the CDSmeta.refcharJ/MNRAS/416/2265/table7Blue stragglers whose variability is to be confirmedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlcplot of light curvesmeta.ref.urlcharVNameVariable name (S1-S5)meta.id;meta.maincharVmagV magnitudemagphot.mag;em.opt.VfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.IfloatRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainSimbadSimbad column added by the CDSmeta.refchar