J/AJ/149/40ivo://CDS.VizieR/J/AJ/149/40doi:10.26093/cds/vizier.51490040CDSAbbas M.A.Layden A.C.Guldenschuh K.A.Reichart D.E.Ivarsen K.M.,Haislip J.B.Nysewander M.C.LaCluyze A.P.Welch D.L.2017-07-10T06:22:03Z2015-04-08T08:27:50ZCDS support team

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

cds-question@unistra.frglobular-star-clustersinfrared-photometryvisible-astronomyphotometryvariable-starsWe present VI-band photometry for stars in the metal-rich globular cluster NGC 6496. Our time-series data were cadenced to search for long-period variables (LPVs) over a span of nearly two years, and our variability search yielded the discovery of 13 new variable stars, of which 6 are LPVs, 2 are suspected LPVs, and 5 are short-period eclipsing binaries. An additional star was found in the ASAS database, and we clarify its type and period. We argue that all of the eclipsing binaries are field stars, while five to six of the LPVs are members of NGC 6496. We compare the period-luminosity distribution of these LPVs with those of LPVs in the Large Magellanic Cloud and 47 Tucanae, and with theoretical pulsation models. We also present a VI color-magnitude diagram, display the evolutionary states of the variables, and match isochrones to determine a reddening of E(B-V)=0.21+/-0.02mag and apparent distance modulus of 15.60+/-0.15mag.2015AJ....149...40Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/149/40CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)II/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2002-2005)VII/202 : Globular Clusters in the Milky Way (Harris, 1997)J/AJ/145/165 : BVRI photometry in NGC 6496 (Fraga+, 2013)J/AJ/117/1313 : NGC 6441 VI photometry (Layden+, 1999)J/A+AS/109/1 : CCD photometry of globular clusters (Richtler, 1995)J/ApJS/93/161 : CCD photometry of 6 globular clusters (Sarajedini+ 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/149/40https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/149/40http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/149/40https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/149/40https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/149/40http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/149/40GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/149/40/table2 (Mean photometry of NGC 6496)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/149/40/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/149/40/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/149/40/table2?GETtext/xml+votable180.050000true269.75254583-44.192729440.005555555555555556Cone search capability for table J/AJ/149/40/variables (Variable stars })https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/149/40/variables?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/149/40/variables?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/149/40/variables?GETtext/xml+votable180.050000true269.7328333-44.23872220.0055555555555555566/423208.650015785639275e-20 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/149/40?format=asciiOpticalInfrareddefaultJ/AJ/149/40/table2Mean photometry of NGC 6496Star[1/1678] Star identification numbermeta.id;meta.mainintprimaryVSimbad column added by the CDSmeta.ref.urlcharXposX pixel coordinate (G1)pixpos.cartesian.xdoubleYposY pixel coordinate (G1)pixpos.cartesian.ydoubleVmag[10.2/19.2] Standard V band magnitude (1)magphot.mag;em.opt.Vfloate_VmagUncertainty in Vmagmagstat.error;phot.mag;em.opt.VfloatImag[8.9/18.1] Standard weighted I band magnitude (1)magphot.mag;em.opt.Ifloate_ImagUncertainty in Imagmagstat.error;phot.mag;em.opt.Ifloatchi[0.786/2.393] Mean DAOPHOT "{chi}" value (2)stat.fit.chi2floatsharp[-3.429/2.062] Mean DAOPHOT "sharp" value (2)stat.fit.paramfloat_RAPosition computed from a comparison with UCAC2 catalog (I/289) ({sigma}=0.05'') (right ascension part)degpos.eq.ra;meta.main_DEPosition computed from a comparison with UCAC2 catalog (I/289) ({sigma}=0.05'') (declination part)degpos.eq.dec;meta.mainJ/AJ/149/40/table4Time series photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVar[1/13] Variable star number (G2)meta.idintJDJulian date of the observation (JD-2450000)dtime.epochdoublePhase[0/1]? Light curve phase (1)time.phasefloatnullableIlmag[10.66/15.73]? Long exposure I band magnitudemagphot.mag;em.opt.Ifloatnullablee_Ilmag? Error in Ilmagmagstat.error;phot.mag;em.opt.Ifloatnullableo_Ilmag[0/10] Number of comparison stars used in Ilmagmeta.numberintIsmag[11.4/15.53]? Short exposure I band magnitude (2)magphot.mag;em.opt.Ifloatnullablee_Ismag? Error in Ismagmagstat.error;phot.mag;em.opt.Ifloatnullableo_Ismag[0/10] Number of comparison stars used in Ismagmeta.numberintVmag[12.8/16.44]? The V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Error in Vmagmagstat.error;phot.mag;em.opt.Vfloatnullableo_VmagNumber of comparison stars used in Vmagmeta.numberintJ/AJ/149/40/variablesVariable stars }LClight curvemeta.ref.urlcharASAS[ASAS] Star in ASAS survey (3)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint<Vmag>[11.3/16.1] Mean V band magnitudemagphot.mag;em.opt.Vfloat<Ilmag>[8.9/15.4] Mean (long exposure) I band magnitudemagphot.mag;em.opt.IfloatVmax[11.1/15.9] Maximum V band magnitudemagphot.mag;em.opt.VfloatVmin[11.7/16.5] Minimum V band magnitudemagphot.mag;em.opt.VfloatImax[10.67/15.21]? Maximum I band magnitudemagphot.mag;em.opt.IfloatnullableImin[10.7/15.5]? Minimum I band magnitudemagphot.mag;em.opt.IfloatnullableNV[9/490] Number of V-band images obtainedmeta.numberintf_PerA long secondary period of 340+/-10days was found for V3meta.codecharPer[0.28974/740]? Derived period (4)dtime.perioddoublenullablee_Per? 1{sigma} uncertainty in Perdstat.errordoublenullableTypeVariability type (5)meta.notecharu_Type[?] Uncertainty flag on Typemeta.notechar2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharVar[1/13]? Variable star number (G2)meta.idintnullablef_Var[a] Indicates the two stars located outside the PROMPT4 field of view (1)meta.codecharStar[1/1678]? Star identification number (table 2)meta.id;meta.mainintnullablePhotSimbad column added by the CDSmeta.ref.urlcharXpos? X pixel coordinate (table 2)pixpos.cartesian.xfloatnullableYpos? Y pixel coordinate (table 2)pixpos.cartesian.yfloatnullableDist[1.14/5.89]? Projected angular distance (R_proj_) from the cluster centerarcminpos.distancefloatnullableRAJ2000? Hour of Right Ascension (J2000) (2)pos.eq.ra;meta.mainnullableDEJ2000? Degree of Declination (J2000) (2)pos.eq.dec;meta.mainnullableJmag[9.31/14.89]? 2MASS J band magnitude (2)magphot.mag;em.IR.Jfloatnullablee_Jmag? 2MASS 1{sigma} uncertainty in Jmag (2)magstat.error;phot.mag;em.IR.JfloatnullableKmag[8.19/14.63]? 2MASS Ks band magnitude (2)magphot.mag;em.IR.Kfloatnullablee_Kmag? 2MASS 1{sigma} uncertainty in Kmag (2)magstat.error;phot.mag;em.IR.Kfloatnullable