J/AJ/152/176ivo://CDS.VizieR/J/AJ/152/176doi:10.26093/cds/vizier.51520176CDSO'Connell J.E.Martens K.Frinchaboy P.M.2017-07-18T15:13:54Z2017-05-30T14:35:19ZCDS support team

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

cds-question@unistra.frstellar-associationsline-intensitieschemical-abundancesWe present elemental abundances for all seven stars in Moving Group W11450 (Latham 1) to determine if they may be chemically related. These stars appear to be both spatially and kinematically related, but no spectroscopic abundance analysis exists in literature. Abundances for eight elements were derived via equivalent width analyses of high-resolution (R~60000), high-signal-to-noise ratio (<S/N> ~100) spectra obtained with the Otto Struve 2.1m telescope and the Sandiford Echelle Spectrograph at McDonald Observatory. The large star-to-star scatter in metallicity, -0.55{<=}[Fe/H]{<=}0.06dex ({sigma}=0.25), implies these stars were not produced from the same chemically homogeneous molecular cloud, and are therefore not part of a remnant or open cluster as previously proposed. Prior to this analysis, it was suggested that two stars in the group, W11449 and W11450, are possible wide binaries. The candidate wide binary pair show similar chemical abundance patterns with not only iron but with other elements analyzed in this study, suggesting the proposed connection between these two stars may be real.2016AJ....152..176Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/152/176CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/ocl : Optically visible open clusters and Candidates (Dias+ 2002-2015)VI/135 : All-sky spectrally matched Tycho2 stars (Pickles+, 2010)V/136 : Teff and metallicities for Tycho-2 stars (Ammons+, 2006)I/259 : The Tycho-2 Catalogue (Hog+ 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/152/176https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/152/176http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/152/176https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/152/176https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/152/176http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/152/176GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/152/176/table2 (Observation logs, 2013 and 2014)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/152/176/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/152/176/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/152/176/table2?GETtext/xml+votable180.050000true197.8001041730.827180560.0055555555555555566/10394 10395 104163.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/152/176?format=asciidefaultJ/AJ/152/176/table2Observation logs, 2013 and 2014recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWeistropWeistrop identifier of the star (1)meta.id;meta.mainintTycho2Star identifier from Tycho-2 (Cat. I/259)meta.idcharDateDate of observationtime.epochcharRAJ2000Hour of Right Ascension (J2000) (2)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (2)pos.eq.dec;meta.mainVmagV-band magnitude (3)magphot.mag;em.opt.VfloatNexpNumber of exposuresmeta.numberintExpExposure timestime.duration;obs.exposureintEWEquivalent widths (table5)meta.ref.urlcharAbdMeasured abundances (table6)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/152/176/table6Measured abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[X/Fe]Speciesphys.abundcharW11449Abundance for the star W11449log(Sun)phys.abundfloate_W11449Error in W11449log(Sun)stat.errorfloato_W11449Number of absorption lines used for W11449 abundance analysismeta.numberintW11450Abundance for the star W11450log(Sun)phys.abundfloate_W11450Error in W11450log(Sun)stat.errorfloato_W11450Number of absorption lines used for W11450 abundance analysismeta.numberintW12388Abundance for the star W12388log(Sun)phys.abundfloate_W12388Error in W12388log(Sun)stat.errorfloato_W12388Number of absorption lines used for W12388 abundance analysismeta.numberintW13284Abundance for the star W13284log(Sun)phys.abundfloate_W13284Error in W13284log(Sun)stat.errorfloato_W13284Number of absorption lines used for W13284 abundance analysismeta.numberintW21415Abundance for the star W21415log(Sun)phys.abundfloate_W21415Error in W21415log(Sun)stat.errorfloato_W21415Number of absorption lines used for W21415 abundance analysismeta.numberintW23375? Abundance for the star W23375log(Sun)phys.abundfloatnullablee_W23375? Error in W23375log(Sun)stat.errorfloatnullableo_W23375? Number of absorption lines used for W23375 abundance analysismeta.numberintnullableW23508Abundance for the star W23508log(Sun)phys.abundfloate_W23508Error in W23508log(Sun)stat.errorfloato_W23508Number of absorption lines used for W23375 abundance analysismeta.numberintJ/AJ/152/176/table5Atomic data and equivalent widthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength {lambda}0.1nmem.wldoubleIonSpecies (either Ba II, Ca I, Fe I, Fe II, Mg I Na I, Ni I, or Si I)phys.atmol.ionStagecharEPExcitation potentialeVphys.atmol.excitationfloatloggfLog of the oscillator strengthphys.atmol.oscStrengthfloatW11449? Equivalent width of the star W11449 (m{AA})0.1pmspect.line.eqWidthfloatnullableW11450? Equivalent width of the star W11450 (m{AA})0.1pmspect.line.eqWidthfloatnullableW12388? Equivalent width of the star W12388 (m{AA})0.1pmspect.line.eqWidthfloatnullableW13284? Equivalent width of the star W13284 (m{AA})0.1pmspect.line.eqWidthfloatnullableW21415? Equivalent width of the star W21415 (m{AA})0.1pmspect.line.eqWidthfloatnullableW23375? Equivalent width of the star W23375 (m{AA})0.1pmspect.line.eqWidthfloatnullableW23508? Equivalent width of the star W23508 (m{AA})0.1pmspect.line.eqWidthfloatnullable