J/A+A/377/123ivo://CDS.VizieR/J/A+A/377/123doi:10.26093/cds/vizier.33770123CDSGratton R.G.Bonanno G.Claudi R.U.Cosentino R.Desidera S.,Lucatello S.Scuderi S.2018-01-10T11:47:45Z2001-09-22T14:14:31ZCDS support team

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

cds-question@unistra.frmultiple-starsline-intensitiesspectroscopyWe performed a careful differential abundance analysis of individual components of six main sequence binaries with separations of a few hundreds of AU. To reduce analysis concerns, we selected systems with almost equal mass components. We were able to derive differential abundances of several elements with errors down to 0.01dex in the best cases. We found that in four systems the two components have the same chemical composition, within these very severe limits. However, clear differences were found for the two remaining systems (HD 219542 and HD 200466), in both cases the primaries being more Fe-rich than the secondaries, by 0.091+/-0.009 and 0.053+/-0.024dex respectively. Similar differences were found for most of the elements considered in our analysis; however, we found no appreciable difference for volatile elements and a trend for increasing abundance differences with increasing condensation temperature for individual elements, a result similar to that found for some single stars with planets by Smith et al. (2001AJ....121.3207S). Finally, we note that HD 219542A has a Li-abundance comparable to those of Li-rich stars in old open clusters, while no Li is detected in the slightly cooler HD 219542B. We suggest that the primaries of these two systems have accreted rocky planets or the inner dust-rich part of a protoplanetary disk, likely due to gravitational perturbation caused by the presence of the companion.2001A&A...377..123Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/377/123CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/377/123https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/377/123http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/377/123https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/377/123https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/377/123http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/377/123GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/377/123/stars (Summary of the stars observed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/377/123/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/377/123/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/377/123/stars?GETtext/xml+votable180.050000true19.990833-15.8144440.0055555555555555566/548 1288 13297 17441 18748 23319https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/377/123?format=asciiOpticaldefaultJ/A+A/377/123/starsSummary of the stars observedFileNameName of the file with equivalent widthsmeta.id;meta.filecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD number (Cat. III/135) of the primarymeta.id;meta.mainintADSAitken Double Star number of the binarymeta.idintSimbadSimbad column added by the CDSmeta.refcharRAJ2000Right Ascension J2000 (hours)pos.eq.ra;meta.mainDEJ2000Declination J2000 (degrees)pos.eq.dec;meta.mainJ/A+A/377/123/hd008071Equivalent widths of HD 008071IonElementphys.atmol.elementcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength of line0.1nmem.wlfloatEPotential EnergyeVphys.energy;phys.atmol.levelfloatloggLog Oscillator Strengthphys.atmol.wOscStrengthfloatEW(A)Equivalent width of primary (m{AA})0.1pmspect.line.eqWidthfloatEW(B)Equivalent width of secondary (m{AA})0.1pmspect.line.eqWidthfloatJ/A+A/377/123/hd013357Equivalent widths of HD 013357recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonElementphys.atmol.elementcharlambdaWavelength of line0.1nmem.wlfloatEPotential EnergyeVphys.energy;phys.atmol.levelfloatloggLog Oscillator Strengthphys.atmol.wOscStrengthfloatEW(A)Equivalent width of primary (m{AA})0.1pmspect.line.eqWidthfloatEW(B)Equivalent width of secondary (m{AA})0.1pmspect.line.eqWidthfloatJ/A+A/377/123/hd030101Equivalent widths of HD 030101recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonElementphys.atmol.elementcharlambdaWavelength of line0.1nmem.wlfloatEPotential EnergyeVphys.energy;phys.atmol.levelfloatloggLog Oscillator Strengthphys.atmol.wOscStrengthfloatEW(A)Equivalent width of primary (m{AA})0.1pmspect.line.eqWidthfloatEW(B)Equivalent width of secondary (m{AA})0.1pmspect.line.eqWidthfloatJ/A+A/377/123/hd033334Equivalent widths of HD 033334recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonElementphys.atmol.elementcharlambdaWavelength of line0.1nmem.wlfloatEPotential EnergyeVphys.energy;phys.atmol.levelfloatloggLog Oscillator Strengthphys.atmol.wOscStrengthfloatEW(A)Equivalent width of primary (m{AA})0.1pmspect.line.eqWidthfloatEW(B)Equivalent width of secondary (m{AA})0.1pmspect.line.eqWidthfloatJ/A+A/377/123/hd200466Equivalent widths of HD 200466recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonElementphys.atmol.elementcharlambdaWavelength of line0.1nmem.wlfloatEPotential EnergyeVphys.energy;phys.atmol.levelfloatloggLog Oscillator Strengthphys.atmol.wOscStrengthfloatEW(A)Equivalent width of primary (m{AA})0.1pmspect.line.eqWidthfloatEW(B)Equivalent width of secondary (m{AA})0.1pmspect.line.eqWidthfloatJ/A+A/377/123/hd219542Equivalent widths of HD 219542recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonElementphys.atmol.elementcharlambdaWavelength of line0.1nmem.wlfloatEPotential EnergyeVphys.energy;phys.atmol.levelfloatloggLog Oscillator Strengthphys.atmol.wOscStrengthfloatEW(A)Equivalent width of primary (m{AA})0.1pmspect.line.eqWidthfloatEW(B)Equivalent width of secondary (m{AA})0.1pmspect.line.eqWidthfloat