J/AJ/150/200ivo://CDS.VizieR/J/AJ/150/200doi:10.26093/cds/vizier.51500200CDSHayes C.R.Friel E.D.Slack T.J.Boberg O.M.2020-10-07T14:53:13Z2016-06-14T07:49:29ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryvisible-astronomybroad-band-photometryline-intensitiesradial-velocityeffective-temperaturemetallicityWe present new photometric and spectroscopic data of the old open cluster Czernik 30. Wide field BVI photometry allows us to correct for the high field contamination by statistical subtraction to produce a color-magnitude diagram (CMD) that clearly reveals the cluster sequence. From spectra of stars in the cluster field obtained with the Hydra spectrograph on the Wisconsin-Indiana-Yale-NOAO 3.5m telescope we determine a mean cluster velocity of +79.9+/-1.5km/s and provide membership information that helps further define the cluster giant branch and red clump. Stellar abundances for the brighter giants in the cluster indicate a mean metallicity of [Fe/H]=-0.2+/-0.15. Fitting theoretical isochrones to the CMD we determine the following properties of Czernik 30: age=2.8+/-0.3Gyr, (m-M)_v_=14.8+/-0.1, E(B-V)=0.24+/-0.06, and E(V-I)=0.36+/-0.04. Czernik 30 is an old, sub-solar metallicity cluster located at a Galactocentric radius of R_gc_~13.3kpc. Given its age and position just beyond the transition to a flat abundance gradient seen in the open cluster population, Czernik 30 provides an interesting target for future observations.2015AJ....150..200Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/150/200CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/ocl : Optically visible open clusters and Candidates (Dias+ 2002-2015)J/PAZh/38/571 : Astrophysical parameters for 593 open clusters (Gozha+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/150/200https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/150/200http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/150/200https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/150/200https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/150/200http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/150/200GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/150/200/table3 (Photometric data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/150/200/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/150/200/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/150/200/table3?GETtext/xml+votable180.050000true112.6847917-10.10727780.0055555555555555566/21567 21610https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/150/200?format=asciiOpticalInfrareddefaultJ/AJ/150/200/table3Photometric datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStar[1/6294] Star identification numbermeta.id;meta.mainintprimarySpecmeta.ref.urlcharXpix[2.4/2045.4] Pixel position in Right Ascensionpixpos.eq.ra;instr.pixeldoubleYpix[2.4/2048.8] Pixel position in Declinationpixpos.eq.dec;instr.pixeldoubleRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainVmag[10.9/23] The V band magnitudemagphot.mag;em.opt.Vfloate_Vmag[0.003/0.555] Error in Vmagmagstat.error;phot.magfloatB-V[-4.26/8.336]? The (B-V) color indexmagphot.color;em.opt.B;em.opt.Vfloatnullablee_B-V[0.005/0.766]? Error in B-Vmagstat.error;phot.color;em.opt.BfloatnullableV-I[-4.007/6.087] The (V-I) color indexmagphot.color;em.opt.V;em.opt.Ifloate_V-I[0.006/0.73] Error in V-Imagstat.error;phot.color;em.opt.VfloatJ/AJ/150/200/table4Individual stellar velocities and membershiprecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStar[158/6290] Star identification numbermeta.id;meta.mainintPhotmeta.ref.urlcharWEBDA[1/1674]? WEBDA identification number (1)meta.idintnullableVmag[13.7/17] The V band magnitudemagphot.mag;em.opt.VfloatB-V[0.5/4.3] The (B-V) color indexmagphot.color;em.opt.B;em.opt.VfloatRV[0.4/160.4] Radial velocitykm/sphys.veloc;pos.heliocentricfloatMmMember? (Yes or No)meta.code.membercharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/150/200/table6Stellar parameters and metallicitiesRV[74.2/81.2] Radial velocitykm/sphys.veloc;pos.heliocentricfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStar[343/6248] Star identification numbermeta.id;meta.mainintTeff[4350/4800] Effective temperatureKphys.temperature.effectiveintlogg[1.5/2.2] Log of surface gravitylog(cm.s**-2)phys.gravityfloatVt[1.2/1.26] Microturbulent velocitykm/sphys.velocfloatNl[16/27] Number of linesmeta.numberint[Fe/H][-0.42/0.14] Metallicitylog(Sun)phys.abund.Zfloats_[Fe/H][0.21/0.32] The rms dispersion about the mean metallicity ({sigma})log(Sun)stat.stdevfloatEWmeta.ref.urlcharJ/AJ/150/200/table5Linelist and equivalent widthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[6079/6358.7] Wavelength {lambda} (in {AA})0.1nmem.wldoubleIonSpecies identifier (FeI or FeII)phys.atmol.ionStagecharEP[0.859/4.733] Excitation potentialeVphys.atmol.excitationfloatloggf[-6/-0.72] Log oscillator strengthphys.atmol.oscStrengthfloatEW343[44.3/186.1]? Equivalent width in Star 343 (1)0.1pmspect.line.eqWidthfloatnullableEW695[40.4/176.9]? Equivalent width in Star 695 (1)0.1pmspect.line.eqWidthfloatnullableEW732[27.1/186.7]? Equivalent width in Star 732 (1)0.1pmspect.line.eqWidthfloatnullableEW946[73.3/172.3]? Equivalent width in Star 946 (1)0.1pmspect.line.eqWidthfloatnullableEW2343[67.9/157.8]? Equivalent width in Star 2343 (1)0.1pmspect.line.eqWidthfloatnullableEW2482[49.2/169.8]? Equivalent width in Star 2482 (1)0.1pmspect.line.eqWidthfloatnullableEW3672[44.5/192.6]? Equivalent width in Star 3672 (1)0.1pmspect.line.eqWidthfloatnullableEW4175[39.8/197.5]? Equivalent width in Star 4175 (1)0.1pmspect.line.eqWidthfloatnullableEW4517[60.6/170.5]? Equivalent width in Star 4517 (1)0.1pmspect.line.eqWidthfloatnullableEW6248[58.7/196]? Equivalent width in Star 6248 (1)0.1pmspect.line.eqWidthfloatnullable