J/ApJ/709/447ivo://CDS.VizieR/J/ApJ/709/447doi:10.26093/cds/vizier.17090447CDSEpstein C.R.Johnson J.A.Dong S.Udalski A.Gould A.Becker G.2012-04-15T13:33:50Z2012-03-29T10:52:18ZCDS support team

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

cds-question@unistra.frline-intensitieschemical-abundancesgravitational-lensingg-starsspectroscopymilky-way-galaxyWe present a high-resolution spectrum of a microlensed G dwarf in the Galactic bulge with spectroscopic temperature T_eff_=5600+/-180K. This I~21mag star was magnified by a factor ranging from 1160 to 1300 at the time of observation. Its high metallicity ([Fe/H]=0.33+/-0.15dex) places this star at the upper end of the bulge giant metallicity distribution. Using a Kolmogorov-Smirnov test, we find a 1.6% probability that the published microlensed bulge dwarfs share an underlying distribution with bulge giants, properly accounting for a radial bulge metallicity gradient. We obtain abundance measurements for 15 elements and perform a rigorous error analysis that includes covariances between parameters. This star, like bulge giants with the same metallicity, shows no alpha enhancement. It confirms the chemical abundance trends observed in previously analyzed bulge dwarfs. At supersolar metallicities, we observe a discrepancy between bulge giant and bulge dwarf Na abundances.2010ApJ...709..447Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/709/447CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/533/A134 : Abundances of microlensed stars in the Bulge (Bensby+, 2011)J/A+A/512/A41 : Abundances of microlensed stars in the Bulge (Bensby+, 2010)J/A+A/499/737 : Abundances of microlensed dwarf and subgiant stars (Bensby+,J/ApJ/699/66 : Abundances in two Galactic bulge stars (Cohen+, 2009)J/ApJ/682/1029 : Abundances in OGLE-2007-BLG-349S (Cohen+, 2008)J/ApJ/655/L33 : High-resolution spectrum of OGLE-2006-BLG-265 (Johnson+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/709/447https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/709/447http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/709/447https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/709/447https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/709/447http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/709/447GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/709/447/table1Line parameters and equivalent widthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameAtomic species namephys.atmol.ionStagecharlambdaWavelength in Angstroms0.1nmem.wldoubleEPExcitation potentialeVphys.atmol.excitationfloatlog(gf)Log of the oscillator strengthphys.atmol.oscStrengthfloatWstar? OGLE-2007-BLG-514S equivalent width (m{AA})1e-13mspect.line.eqWidthfloatnullablef_Wstar[s] eq.width from synthetic spectra (1)meta.codecharWsun? Solar equivalent width (m{AA})1e-13mspect.line.eqWidthfloatnullablef_Wsun[s] eq.width from synthetic spectra (1)meta.codechar