J/A+A/613/A63ivo://CDS.VizieR/J/A+A/613/A63doi:10.26093/cds/vizier.36130063CDSBouvier JBarrado D.Moraux E.Stauffer J.Rebull L.Hillenbrand L.,Bayo A.Boisse I.Bouy H.DiFolco E.Lillo-Box J.Morales Calderon M.2018-09-18T12:16:59Z2018-06-01T09:07:39ZCDS support team

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

cds-question@unistra.fropen-star-clustersk-starschemical-abundancesThe evolution of lithium abundance over a star's lifetime is indicative of transport processes operating in the stellar interior. Aims. We revisit the relationship between lithium content and rotation rate previously reported for cool dwarfs in the Pleiades cluster. Methods. We derive new LiI 670.8nm equivalent width measurements from high-resolution spectra obtained for low-mass Pleiades members. We combine these new measurements with previously published ones, and use the Kepler/K2 rotational periods recently derived for Pleiades cool dwarfs to investigate the lithium-rotation connection in this 125Myr-old cluster. Results. The new data confirm the correlation between lithium equivalent width and stellar spin rate for a sample of 51 early K-type members of the cluster, where fast rotating stars are systematically lithium-rich compared to slowly rotating ones. The correlation is valid for all stars over the (J-Ks) color range 0.50-0.70mag, corresponding to a mass range from about 0.75 to 0.90M_{sun}_, and may extend down to lower masses. Conclusions. We argue that the dispersion in lithium equivalent widths observed for cool dwarfs in the Pleiades cluster reflects an intrinsic scatter in lithium abundances, and suggest that the physical origin of the lithium dispersion pattern is to be found in the pre-main sequence rotational history of solar-type stars.2018A&A...613A..63Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/613/A63CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/106/1059 : Lithium in the Pleiades (Soderblom+, 1993)J/A+A/335/183 : Pleiades low-mass stars rotational velocities (Queloz+ 1998)J/MNRAS/408/475 : HATNet Pleiades Rotation Period Catalogue (Hartman+, 2010)J/A+A/577/A148 : The Seven Sisters DANCe. I. Pleiades (Bouy+, 2015)J/A+A/596/A113 : The Seven Sisters DANCe. II. Pleiades (Barrado+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/613/A63https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/613/A63http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/613/A63https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/613/A63https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/613/A63http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/613/A63GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/613/A63/tableb1 (Stellar parameters and lithium content for our 148 stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/613/A63/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/613/A63/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/613/A63/tableb1?GETtext/xml+votable180.050000true53.3079323.006470.0055555555555555565/115 118 6/319 453-455 457 465-467 478 480 485-486 496https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/613/A63?format=asciidefaultJ/A+A/613/A63/tableb1Stellar parameters and lithium content for our 148 starsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharEPICEPIC numbermeta.idlongRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declinaison (J2000.0)degpos.eq.dec;meta.mainVmag? V magnitudemagphot.mag;em.opt.VfloatnullableJ-K(J-K) color indexmagphot.color;em.IR.J;em.IR.KfloatPerPhotometric/rotational perioddtime.perioddoubleAmpPhotometric amplitudemagsrc.var.amplitudefloatl_WLiLimit flag on WLimeta.code.errorcharWLiAverage LiI equivalent width0.1pmspect.line.eqWidth;stat.meanfloate_WLi? rms error LiI Eq. Width0.1pmstat.errorfloatnullableTeffEffective temperatureKphys.temperature.effectivefloatALiLiI abundancephys.abundfloate_ALirms error Li abundancestat.errorfloatBinMultiplicity statusmeta.codechar