J/A+A/399/543ivo://CDS.VizieR/J/A+A/399/543doi:10.26093/cds/vizier.33990543CDSClaria J.J.Piatti A.E.Lapasset E.Mermilliod J.-C.2003-05-19T11:40:01Z2003-05-19T11:39:46ZCDS support team

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

cds-question@unistra.fropen-star-clustersvisible-astronomybroad-band-photometryddo-photometryradial-velocityWe present new UBV photoelectric observations of 119 stars in the field of the southern open cluster IC 2488, supplemented by DDO and Washington photometry and Coravel radial velocities for a sample of red giant candidates. Nearly 50% of the stars sampled - including three red giants and one blue straggler - are found to be probable cluster members. Photometric membership probabilities of the red giant candidates show good agreement with those obtained from Coravel data. A mean radial velocity of -2.63+/-0.06km/s is derived for the cluster giants. The reddening across the cluster is found to be uniform, the mean value being E(B-V)=0.24+/-0.04. IC 2488, located at a distance of (1250+/-120) pc from the Sun and 96 pc below the Galactic plane, is most probably not related to the planetary nebula ESO 166-PN21. A metal abundance [Fe/H]=0.10+/-0.06 relative to the Sun is determined from DDO data of the red giant members, in good agreement with the [Fe/H] values derived from five independent Washington abundance indices. An age of 180Myr is determined from the fitting of isochrones computed with convective overshooting for Z=0.019. The isochrone for logt=8.25 reproduces remarkably well not only the morphology of the upper main sequence but also the observed red giant pattern.2003A&A...399..543Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/399/543CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/107/39 : IC 2714 UBV photometry (Claria+ 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/399/543https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/399/543http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/399/543https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/399/543https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/399/543http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/399/543GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/399/543/table1 (UBV photometry for stars in the field of IC 2488)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/399/543/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/399/543/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/399/543/table1?GETtext/xml+votable180.050000true141.42956-56.9161380.0055555555555555566/37705 37707-37708https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/399/543?format=asciiOpticaldefaultJ/A+A/399/543/table1UBV photometry for stars in the field of IC 2488recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqStar numbermeta.id;meta.mainintprimaryXposX coordinatespixpos.cartesian.x;instr.detintYposY coordinatespixpos.cartesian.y;instr.detintVmagV magnitudemagphot.mag;em.opt.VfloatB-V(B-V) colour indexmagphot.color;em.opt.B;em.opt.VfloatU-B(U-B) colour indexmagphot.color;em.opt.U;em.opt.BfloatNmeasNumber of measurementsmeta.numberintNotesRemarksmeta.notechar_RAComputed Right Ascension for Equinox: J2000degpos.eq.ra;meta.main_DEComputed Declination for Equinox: J2000degpos.eq.dec;meta.mainJ/A+A/399/543/table2DDO photometry of red giant candidates in IC 2488e_C41-42rms uncertainty on C41-42magstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqStar numbermeta.id;meta.mainintC45-48C(45-48) indexmagphot.colorfloate_C45-48rms uncertainty on C45-48magstat.errorfloatC42-45C(42-45) indexmagphot.colorfloate_C42-45rms uncertainty on C42-45magstat.errorfloatC41-42C(41-42) indexmagphot.colorfloato_C45-48Number of nights on which the star was observedmeta.numberintJ/A+A/399/543/table3Washington photometry of red giant candidates in IC 2488recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqStar numbermeta.id;meta.mainintC-MC-M colour indexmagphot.colorfloate_C-Mrms uncertainty on C-Mmagstat.errorfloatM-T1M-T1 colour indexmagphot.colorfloate_M-T1rms uncertainty on M-T1magstat.errorfloatT1-T2T1-T2 colour indexmagphot.colorfloate_T1-T2rms uncertainty on T1-T2magstat.errorfloatT1magT1 magnitudemagphot.mag;em.opt.Rfloate_T1magrms uncertainty on T1magmagstat.errorfloato_T1magNumber of nights on which the star was observedmeta.numberintJ/A+A/399/543/table4bRadial-velocity data of red giant candidates in IC 2488SeqStar numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoubleRVHeliocentric Radial velocitykm/sphys.veloc;pos.heliocentricfloate_RVError on the radial velocitykm/sstat.errorfloat