J/A+A/559/A101ivo://CDS.VizieR/J/A+A/559/A101doi:10.26093/cds/vizier.35590101CDSSalgado C.Moni Bidin C.Villanova S.Geisler D.Catelan M.2014-05-30T17:36:03Z2013-11-21T12:42:45ZCDS support team

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

cds-question@unistra.frglobular-star-clustershorizontal-branch-starsspectroscopyRecent investigations revealed very peculiar properties of blue horizontal branch (HB) stars in {omega} Centauri, which show anomalously low surface gravity and mass compared to other clusters and to theoretical models. {omega} Centauri, however, is a very unusual object, hosting a complex mix of multiple stellar populations with different metallicity and chemical abundances. We measured the fundamental parameters (temperature, gravity, and surface helium abundance) of a sample of 71 blue HB stars in M 22, with the aim of clarifying if the peculiar results found in {omega} Cen are unique to this cluster. M 22 also hosts multiple sub-populations of stars with a spread in metallicity, analogous to {omega} Cen.2013A&A...559A.101Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/559/A101CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/420/612 : Proper motions + radial velocities in M22 (Peterson+ 1994)J/A+AS/109/487 : Color-magnitude study of M 22 (Samus+, 1995)J/PASP/107/32 : uvby-hk photometry in M22 (Anthony-Twarog+ 1995)J/MNRAS/349/1278 : BVI photometry of M22 (Monaco+, 2004)J/ApJ/742/37 : Abundances of six RGB stars in M22 (Roederer+, 2011)J/A+A/541/A15 : Abundances of M22 subgiants (Marino+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/559/A101https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/559/A101http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/559/A101https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/559/A101https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/559/A101http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/559/A101GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/559/A101/table1 (Spectroscopic parameters of target stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/559/A101/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/559/A101/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/559/A101/table1?GETtext/xml+votable180.050000true279.0449294-23.83247280.0055555555555555566/28966-28967 28972-28973https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/559/A101?format=asciiOpticaldefaultJ/A+A/559/A101/table1Spectroscopic parameters of target starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintChipChip number (1)meta.id;instrintIDIdentification number (1)meta.id;meta.mainintspPlot of spectrummeta.ref.urlcharVmagV magnitude (1)magphot.mag;em.opt.VfloatB-VB-V color index (1)magphot.color;em.opt.B;em.opt.VfloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on effective temperatureKstat.error;phys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloate_loggError on surface gravitylog(cm.s**-2)stat.errorfloatf_logg[E?] Flag on surface gravity (2)meta.codecharlg(He/H)[-4/-0.9] Surface helium abundancephys.abund.Yfloate_lg(He/H)Error on surface helium abundancestat.errorfloatf_lg(He/H)[E?] Flag on surface helium (2)meta.codecharE(B-V)Color excessmagphot.color.excessfloatMassSpectroscopic masssolMassphys.massfloate_MassError on spectroscopic masssolMassstat.error;phys.massfloatf_Mass[DE?] Flag on spectroscopic mass (2)meta.codecharRVRadial velocitykm/sphys.veloc;pos.heliocentricintf_RV[DE?] Flag on radial velocity (2)meta.codecharNote[F?] Note (2)meta.notecharFileNameName of the file with spectrum in subdirectory spmeta.id;meta.filechar_RAPositions from Monaco et al., J/MNRAS/349/1278 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Monaco et al., J/MNRAS/349/1278 (declination part)degpos.eq.dec;meta.main