J/MNRAS/422/3527ivo://CDS.VizieR/J/MNRAS/422/3527doi:10.26093/cds/vizier.74223527CDSMitschang A.W.De Silva G.M.Zucker D.B.2024-07-17T20:15:51Z2013-03-26T11:29:08ZCDS support team

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

cds-question@unistra.fropen-star-clustersline-intensitiesWe present a new abundance analysis of the intermediate-age Galactic open cluster NGC 3680, based on high-resolution, high signal-to-noise ratio VLT/UVES spectroscopic data. Several element abundances are presented for this cluster for the first time, but most notably we derive abundances for the light and heavy s-process elements Y, Ba, La and Nd. The serendipitous measurement of the rare-earth r-process element Gd is also reported. This cluster exhibits a significant enhancement of Na in giants as compared to dwarfs, which may be a proxy for an O to Na anticorrelation as observed in Galactic globular clusters but not open clusters. We also observe a step-like enhancement of heavy s-process elements towards higher atomic number, contrary to expectations from asymptotic giant branch nucleosynthesis models, suggesting that the r process played a significant role in the generation of both La and Nd in this cluster.2012MNRAS.422.3527Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/422/3527CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/422/3527https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/422/3527http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/422/3527https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/422/3527https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/422/3527http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/422/3527GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/422/3527/table1 (Target star data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/422/3527/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/422/3527/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/422/3527/table1?GETtext/xml+votable180.050000true171.371667-43.2633330.0055555555555555566/38242 38248https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/422/3527?format=asciiOpticaldefaultJ/MNRAS/422/3527/table1Target star dataEWdetailed abundancesmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number <Cl* NGC 3680 NAA NN> in Simbadmeta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVmagV magnitudemagphot.mag;em.opt.VfloatTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloatksiMicroturbulent velocity {ksi}km/sphys.velocfloatSimbadSimbad column added by the CDSmeta.refcharJ/MNRAS/422/3527/table2Equivalent widths for programme starsEW44? Equivalent width for star#440.1pmspect.line.eqWidthfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength0.1nmem.wlfloatIonIonphys.atmol.ionStagecharEPExcitation potentialeVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEW11Equivalent width for star#110.1pmspect.line.eqWidthfloatEW13? Equivalent width for star#130.1pmspect.line.eqWidthfloatnullableEW20? Equivalent width for star#200.1pmspect.line.eqWidthfloatnullableEW26? Equivalent width for star#260.1pmspect.line.eqWidthfloatnullableEW27? Equivalent width for star#270.1pmspect.line.eqWidthfloatnullableEW34? Equivalent width for star#340.1pmspect.line.eqWidthfloatnullableEW41? Equivalent width for star#410.1pmspect.line.eqWidthfloatnullableEW24? Equivalent width for star#110.1pmspect.line.eqWidthfloatnullableEW35? Equivalent width for star#350.1pmspect.line.eqWidthfloatnullableEW5? Equivalent width for star#50.1pmspect.line.eqWidthfloatnullable