J/ApJ/795/22ivo://CDS.VizieR/J/ApJ/795/22doi:10.26093/cds/vizier.17950022CDSMassari D.Mucciarelli A.Ferraro F.R.Origlia L.Rich R.M.,Lanzoni B.Dalessandro E.Valenti E.Ibata R.Lovisi L.Bellazzini M.,Reitzel D.2018-02-05T13:56:25Z2017-05-22T12:19:10ZCDS support team

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

cds-question@unistra.frglobular-star-clustersmilky-way-galaxyapparent-magnitudeeffective-temperaturemetallicityWe present new determinations of the iron abundance for 220 stars belonging to the stellar system Terzan 5 in the Galactic bulge. The spectra have been acquired with FLAMES at the Very Large Telescope of the European Southern Observatory and DEIMOS at the Keck II Telescope. This is by far the largest spectroscopic sample of stars ever observed in this stellar system. From this data set, a subsample of targets with spectra unaffected by TiO bands was extracted and statistically decontaminated from field stars. Once combined with 34 additional stars previously published by our group, a total sample of 135 member stars covering the entire radial extent of the system has been used to determine the metallicity distribution function of Terzan 5. The iron distribution clearly shows three peaks: a super-solar component at [Fe/H]=~0.25 dex, accounting for ~29% of the sample, a dominant sub-solar population at [Fe/H]=~-0.30 dex, corresponding to ~62% of the total, and a minor (6%) metal-poor component at [Fe/H]=~-0.8 dex. Such a broad, multi-modal metallicity distribution demonstrates that Terzan 5 is not a genuine globular cluster but the remnant of a much more complex stellar system.2014ApJ...795...22Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/795/22CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/308/733 : NTT VI photometry in Terzan 5 (Ortolani+ 1996)J/ApJ/726/L20 : Spectroscopy of Terzan 5 (Origlia+, 2011)J/ApJ/791/101 : Terzan 5 chemical and kinematical properties (Massari+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/795/22https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/795/22http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/795/22https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/795/22https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/795/22http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/795/22GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/795/22/table1 (Iron abundance of Terzan 5 stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/795/22/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/795/22/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/795/22/table1?GETtext/xml+votable180.050000true266.9801977-24.78355770.0055555555555555566/28899 28905https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/795/22?format=asciidefaultJ/ApJ/795/22/table1Iron abundance of Terzan 5 starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStellar identifier (NNNNNNN) (1)meta.id;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainKmagThe K_c_ band magnitudemagphot.mag;em.IR.KfloatTeffEffective temperatureKphys.temperature.effectiveintlog(g)Log surface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H]Metallicityphys.abund.Zfloate_[Fe/H]The 1{sigma} uncertainty in [Fe/H]stat.error;phys.abund.FefloatDataDataset identifier (FLAMES, DEIMOS)meta.id;meta.datasetcharSimbadSimbad column added by the CDSmeta.ref.urlchar