J/A+A/524/A44ivo://CDS.VizieR/J/A+A/524/A44doi:10.26093/cds/vizier.35240044CDSPancino E.Rejkuba M.Zoccali M.Carrera R.2011-01-01T16:50:13Z2010-11-23T07:50:43ZCDS support team

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

cds-question@unistra.frglobular-star-clustersspectroscopydwarf-starsearly-type-starsGlobular clusters show star-to-star abundance variations for light elements that are not yet well understood. The preferred explanation involves a self-enrichment scenario, within which two subsequent generations of stars co-exist in globular clusters. Observations of chemical abundances in the main sequence and sub-giant branch stars allow us to investigate the signature of this chemically processed material without the complicating effects caused by stellar evolution and internal mixing. Our main goal is to investigate the carbon-nitrogen anti-correlation with low-resolution spectroscopy of 20-50 stars fainter than the first dredge-up in seven Galactic globular clusters (NGC288, NGC1851, NGC5927, NGC6352, NGC6388, and Pal12) with different properties. We complemented our observations with 47Tuc archival data, with four additional clusters from the literature (M15, M22, M55, NGC362), and with additional literature data on NGC288.2010A&A...524A..44Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/524/A44CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/486/437 : CN and CH line strengths in 8 Galactic GlCl (Kayser+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/524/A44https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/524/A44http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/524/A44https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/524/A44https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/524/A44http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/524/A44GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/524/A44/table2 (CH and CN bands index measurements)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/524/A44/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/524/A44/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/524/A44/table2?GETtext/xml+votable180.050000true287.87338-59.871830.0055555555555555566/16647 33321 34242 41852 42278 42336 47168 48444https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/524/A44?format=asciiOpticaldefaultJ/A+A/524/A44/table2CH and CN bands index measurementsGGCCluster namemeta.id.parentcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqStar sequential number in clustermeta.recordintRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainCNS3839(CN) band strength indexmeta.code;spect.indexfloate_CNPoisson uncertainty on S3839(CN)stat.errorfloatdCNS3839(CN) corrected for Teff and logg effectsarith.factorfloatCHCH4300 band strength indexmeta.code;spect.indexfloate_CHPoisson uncertainty on CH4300stat.errorfloatdCHCH4300 corrected for Teff and logg effectsarith.factorfloatHRVHeliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricinte_HRVUncertainty on radial velocitykm/sstat.errorint