J/AJ/158/51ivo://CDS.VizieR/J/AJ/158/51doi:10.26093/cds/vizier.51580051CDSLata S.Pandey A.K.Pandey J.C.Yadav R.K.S.Pandey S.B.Gupta A.,Bangia T.Chand H.Jaiswar M.K.Joshi Y.C.Joshi M.Kumar B.,Kumar T.S.Medhi B.J.Misra K.Nanjappa N.Pant J.Purushottam,Reddy B.K.Sahu S.Sharma S.Uddin W.Yadav S.2021-02-22T16:44:16Z2019-09-24T07:18:48ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvariable-starsinfrared-photometryvisible-astronomyphotometrystellar-distanceproper-motionsmetallicityeffective-temperatureWe present results of a search for variable stars in a region of the globular cluster NGC 4147 based on photometric observations with a 4Kx4K CCD imager mounted at the axial port of the recently installed 3.6 m Devasthal optical telescope (DOT) at Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital, India. We performed time series photometry of NGC 4147 in the V and R bands, and identified 42 periodic variables in the region of NGC 4147, 28 of which have been detected for the first time. Seventeen variable stars are located within the half-light radius ~<0.48', of which 10 stars are newly identified variables. Two of the 10 variables are located within the core radius ~<0.09'. Based on their location in the V/(V-R) color-magnitude diagram and variability characteristics, seven, eight, five, and one newly identified probable member variables are classified as RRc, EA/E, EW, and SX Phe, respectively. The metallicity of NGC 4147 estimated from the light curves of RRab and RRc stars with the help of Fourier decomposition is found to be characteristic of Oosterhoff II. The distance derived using the light curves of RRab stars is consistent with that obtained from the observed V/(V-R) color-magnitude diagram.2019AJ....158...51Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/158/51CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/A+AS/142/373 : Proper motions and BVRI photometry in NGC 4147J/other/RMxAA/40.209 : VR light curves of 15 RR Lyrae in NGC 4147J/PASP/117/1325 : BVRI photometry in NGC4147 (Stetson+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/158/51https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/158/51http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/158/51https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/158/51https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/158/51http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/158/51GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/158/51/variables (The photometric data, period, amplitude, radial distance, classification (table 2) and membership probabilities (table 3) of 42 variables in the region of NGC 4147)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/158/51/variables?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/158/51/variables?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/158/51/variables?GETtext/xml+votable180.050000true182.49738818.53022220.0055555555555555566/28067https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/158/51?format=asciiOpticalInfrareddefaultJ/AJ/158/51/table4The Fourier light-curve fitting parameters of individual RRab, RRc, and other variablesm_Num[1/2]? Component of Nummeta.code.multipintnullableBand[VR] Bandinstr.bandpasschare_A0[0.001/0.026] Uncertainty in A0stat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClassType of variable (RRab, RRc or Others)meta.code;src.varcharNum[1/47] Identification number of variablemeta.id;meta.mainintA0[13.445/19.35] Fundamental Fourier coefficient A_0_src.var.amplitudefloatA1[0.015/0.407] First order Fourier coefficient A_1_src.var.amplitudefloate_A1[0.001/0.042] Uncertainty in A1stat.errorfloatR21[0.031/0.611] R_21_=A_2_/A_1_ Fourier coefficientphot.mag;arith.ratiofloate_R21[0.007/0.161] Uncertainty in R21stat.errorfloatR31[0.024/0.605] R_31_=A_3_/A_1_ Fourier coefficientphot.mag;arith.ratiofloate_R31[0.006/0.123] Uncertainty in R31stat.errorfloatR41[0.012/0.28] R_41_=A_4_/A_1_ Fourier coefficientphot.mag;arith.ratiofloate_R41[0.007/0.126] Uncertainty in R41stat.errorfloatpsi21[1.002/5.722] {psi}_21_ Fourier coefficientstat.fit.paramfloate_psi21[0.024/1.439] Uncertainty in psi21stat.errorfloatpsi31[1.042/5.249] {psi}_31_ Fourier coefficientstat.fit.paramfloate_psi31[0.031/1.748] Uncertainty in psi31stat.errorfloatpsi41[1.051/5.244] {psi}_41_ Fourier coefficientstat.fit.paramfloate_psi41[0.04/1.62] Uncertainty in psi41stat.errorfloatJ/AJ/158/51/table5The physical parameters of RRab and RRc variablesm_Num[1/2]? Component of Nummeta.code.multipintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClassType of variable (RRab or RRc)meta.code;src.varcharNum[1/42] Identification number of variablemeta.id;meta.mainint[Fe/H][-2.15/-0.737] Metallicityphys.abund.ZfloatVMag[0.74/0.85]? Absolute V band magnitudemagphys.magAbsfloatnullablelogTeff[3.776/3.793]? Log effective temperaturelog(K)phys.temperature.effectivefloatnullableJ/AJ/158/51/fig5The phased light curves of known variable stars in V and R bandsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNum[1/47] Variable identifiermeta.id;meta.mainintFilt[VR] Filtermeta.id;instr.filtercharHJDHeliocentric Julian Datedtime.epochdoublemag[13.27/19.757] Apparent magnitude in Filtmagphot.magfloate_mag[0.002/0.217]? Uncertainty in magmagstat.error;phot.magfloatnullableJ/AJ/158/51/fig6The phased light curves of newly identified variable stars in V and R bandsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNum[1/47] Variable identifiermeta.id;meta.mainintFilt[VR] Filtermeta.id;instr.filtercharHJDHeliocentric Julian Datedtime.epochdoubleindexedmag[13.27/19.757] Apparent magnitude in Filtmagphot.magfloate_mag[0.002/0.217]? Uncertainty in magmagstat.error;phot.magfloatnullableJ/AJ/158/51/fig7The phased light curves of V1, V6, V7 and V12 in V and R bandsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNum[1/47] Variable identifiermeta.id;meta.mainintFilt[VR] Filtermeta.id;instr.filtercharHJDHeliocentric Julian Datedtime.epochdoublemag[13.27/19.757] Apparent magnitude in Filtmagphot.magfloate_mag[0.002/0.217]? Uncertainty in magmagstat.error;phot.magfloatnullableJ/AJ/158/51/variablesThe photometric data, period, amplitude, radial distance, classification (table 2) and membership probabilities (table 3) of 42 variables in the region of NGC 4147SimbadNameSimbad column added by the CDSmeta.idcharLCLight curvesmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNum[1/47] Identification number of variable (Cl* NGC 4147 SAW VNN for V1-V17, LPP2019] VNN for V20-V47 in Simbad)meta.id;meta.mainintprimarymoreindicates data in Tables 4-5 for this variablemeta.ref.urlcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainVmag[13.436/19.419]? V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.0054/0.0805]? Uncertainty in Vmagmagstat.error;phot.magfloatnullableV-R[0.044/1.026]? The (V-R) color indexmagphot.color;em.opt.V;em.opt.Rfloatnullablee_V-R[0.0086/0.122]? Uncertainty in V-Rmagstat.error;phot.color;em.opt.Vfloatnullabler[0.047/3.209] Radial distancearcminphys.angSizefloatAmpV[0.063/1.17]? Amplitude in V bandmagsrc.var.amplitudefloatnullableAmpR[0.062/1.319]? Amplitude in R bandmagsrc.var.amplitudefloatnullablePer[0.104889/0.609663] Perioddtime.perioddoubleClassClassification of variablemeta.code;src.varcharFig[5/7] fig.dat file number containing V and R light curves (column added by the CDS)meta.number;phys.composition.massLightRatio;meta.fileintpmRAW[-29.43/12.4]? Proper motion along RA from Wang et al. (2000, J/A+AS/142/373) (pmRA*cosDE)mas/yrpos.pm;pos.eq.rafloatnullablepmDEW[-25.17/25.38]? Proper motion along DE from Wang et al. (2000, J/A+AS/142/373)mas/yrpos.pm;pos.eq.decfloatnullableProb1[0/0.98]? Membership probabilitystat.probabilityfloatnullablepmRAG[-17.932/1.334]? Proper motion along RA from Gaia astrometric mission (pmRA*cosDE)mas/yrpos.pm;pos.eq.rafloatnullablee_pmRAG[0.078/2.635]? Uncertainty in pmRAGmas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDEG[-4.062/2.378]? Proper motion along DE from Gaia astrometric missionmas/yrpos.pm;pos.eq.decfloatnullablee_pmDEG[0.071/2.101]? Uncertainty in pmDEGmas/yrstat.error;pos.pm;pos.eq.decfloatnullableProb2[0/0.98]? Membership probabilitystat.probabilityfloatnullablePgeom[0.167/1] Geometric membership probability (1)stat.fit.goodnessfloatMembMember star (=1) or nonmember (=0)meta.idchar