J/A+A/543/A160ivo://CDS.VizieR/J/A+A/543/A160doi:10.26093/cds/vizier.35430160CDSThygesen A.O.FrandsenS.Bruntt H.Kallinger T.Andersen M.F.,Elsworth Y.E.Hekker S.Karoff C.Stello D.Brogaard K.Burke C.,Caldwell D.A.Christiansen J.L.2017-07-12T15:03:35Z2012-08-23T07:35:55ZCDS support team

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

cds-question@unistra.frgiant-starsspectroscopyAccurate fundamental parameters of stars are essential for the asteroseismic analysis of data from the NASA Kepler mission. We aim at determining accurate atmospheric parameters and the abundance pattern for a sample of 82 red giants that are targets for the Kepler mission. We have used high-resolution, high signal-to-noise spectra from three different spectrographs. We used the iterative spectral synthesis method VWA to derive the fundamental parameters from carefully selected high-quality iron lines. After determination of the fundamental parameters, abundances of 13 elements were measured using equivalent widths of the spectral lines. Results: We identify discrepancies in logg and [Fe/H], compared to the parameters based on photometric indices in the Kepler Input Catalogue, Cat. V/133 (larger than 2.0dex for logg and [Fe/H] for individual stars). The Teff found from spectroscopy and photometry shows good agreement within the uncertainties. We find good agreement between the spectroscopic logg and the logg derived from asteroseismology. Also, we see indications of a potential metallicity effect on the stellar oscillations. We have determined the fundamental parameters and element abundances of 82 red giants. The large discrepancies between the spectroscopic logg and [Fe/H] and values in the Kepler Input Catalogue emphasize the need for further detailed spectroscopic follow-up of the Kepler targets in order to produce reliable results from the asteroseismic analysis.2012A&A...543A.160Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/543/A160CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)B/pastel : The PASTEL catalogue (Soubiran+, 2010-)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/543/A160https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/543/A160http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/543/A160https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/543/A160https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/543/A160http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/543/A160GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/543/A160/stars (List of studied giants)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/543/A160/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/543/A160/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/543/A160/stars?GETtext/xml+votable180.050000true115.3117917-9.55113890.0055555555555555565/3646 6/4574 5535 8007 8767 13282 13332-13333 13882 14550 14579 14583 14589 14591 14730-14731 14735 14746 14752-14754 14757 14760 14762 14765 14771 14777-14779 14819 14825 14827 14830 14915 14918 14923 14930-14933 14936-14937 14942 14948 14952 14954 14956 14959 14964-14966 14973 14975 15040 15044 15060 15105 15107 15113 15118 15121 15128-15129 15145-15146 15148 15153-15154 15158 15200 21612https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/543/A160?format=asciiOpticaldefaultJ/A+A/543/A160/starsList of studied giantsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAbDisplay the atmospheric parameters and abundances for this starmeta.ref.urlcharNameStar namemeta.id;meta.maincharspPlot of the spectrummeta.ref.urlcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFileNameName of the spectrum file in subdirectory spmeta.id;meta.filecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/543/A160/abundAtmospheric parameters and abundances (tables A1 and A2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKIC (Cat. V/133) identificationmeta.id;meta.mainintTeff1Effective temperature with VWA (+/-80K) (1)Kphys.temperature.effectiveintlogg1Surface gravity with VWA (+/-0.2dex) (1)log(cm.s**-2)phys.gravityfloatxi1Microturbulent velocity with VWA (+/-0.15km/s) (1)km/sphys.velocfloat[Fe/H]1Metallicity from FeI and FeII (+/-0.15dex) (1)log(Sun)phys.abund.ZfloatTeff2? Effective temperature with Kepler asteroseismic analysis (+/-100K)Kphys.temperature.effectiveintnullablelogg2? Surface gravity with Kepler asteroseismic analysis (+/-0.1dex)log(cm.s**-2)phys.gravityfloatnullableTeff3? Effective temperature with KIC (V/133)Kphys.temperatureintnullablelogg3? Surface gravity with KIC (V/133)log(cm.s**-2)phys.gravityfloatnullable[Fe/H]3? Metallicity with KIC (V/133)log(Sun)pos.cartesian.yfloatnullableTeff? VWA + Kepler effective temperature (2)Kphys.temperature.effectiveintnullable[Fe/H]? VWA + Kepler metallicity, FeII is used as the measure of [Fe/H] (2)log(Sun)phys.abund.Zfloatnullablexi? VWA + Kepler microturbulent velocity {xi} (2)km/sphys.velocfloatnullablevsiniProjected rotational velocity (+/-1.0km/s)km/sphys.veloc.rotatfloatvmacroMacroturbulent velocity (+/-1.0km/s)km/sphys.velocfloatRVRadial velocity (+/-0.15km/s)km/sphys.veloc;pos.heliocentricfloatTypeGiant type: RGB = red giant branch, RC = red clump, SC = secondary clumpsrc.classcharR[*] (KIC 9574235): abundances based on the spectroscopic (VWA) loggmeta.notechar[C/H]? [C/H] abundance (+/-0.5dex)log(Sun)phys.abundfloatnullable[O/H]? [O/H] abundance (+/-0.5dex)log(Sun)phys.abundfloatnullable[Si/H]? [Si/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[Ca/H]? [Ca/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[Sc/H]? [Sc/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[TiI/H]? [TiI/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[TiII/H]? [TiII/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[V/H]? [V/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[CrI/H]? [CrI/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[CrII/H]? [CrII/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[Mn/H]? [Mn/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[FeI/H]? [FeI/H] abundance (+/-0.15dex)log(Sun)phys.abundfloatnullable[FeII/H]? [FeII/H] abundance (+/-0.15dex)log(Sun)phys.abundfloatnullable[Co/H]? [Co/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[Ni/H]? [Ni/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullable[Y/H]? [Y/H] abundance (+/-0.2dex)log(Sun)phys.abundfloatnullablespPlot of the spectrumphys.abundchar