J/ApJ/655/L33ivo://CDS.VizieR/J/ApJ/655/L33doi:10.26093/cds/vizier.16559033CDSJohnson J.A.Gal-Yam A.Leonard D.C.Simon J.D.Udalski A.Gould A.2009-01-31T15:23:46Z2009-01-31T16:19:13ZCDS support team

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

cds-question@unistra.frdwarf-starsspectroscopyWe present an R=45000 Keck spectrum of the microlensed Galactic bulge G dwarf OGLE-2006-BLG-265, which has high (~60) signal-to-noise ratio despite its short (15 minute) exposure time, because the source was magnified by A~135. While it is very metal-rich ([Fe/H]=0.56), the higher temperature of this star compared with the luminous red giants usually measured in the bulge gives its spectrum many unblended atomic lines. We measure the abundances of 17 elements, including the first abundances for S and Cu in a bulge star. The [alpha/Fe] ratios are subsolar, while the odd-Z elements are slightly supersolar, trends that are also seen in the more metal-rich stars in the bulge and the local Galactic disk. Because the star is a dwarf, the [O/Fe], [Na/Fe], and [Al/Fe] ratios cannot be attributed to internal mixing, as is sometimes claimed for giants. Similar high-resolution spectra could be obtained for about a dozen bulge dwarf stars per year by means of well-designed target-of-opportunity observations.2007ApJ...655L..33Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/655/L33CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/655/L33https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/655/L33http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/655/L33https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/655/L33https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/655/L33http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/655/L33GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/655/L33/table1Equivalent widths and line informationIonIon designationmeta.id;phys.atmol.ionStagecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength0.1nmem.wldoubleEPEnergy potentialeVphys.energy;phys.atmol.levelfloatloggfOscillator strengthphys.atmol.oscStrengthfloatDampDamping factor (Correction factor to the Unsoeld approximation)phys.dampingfloatEW? Equivalent width0.1pmspect.line.eqWidthfloatnullablen_EW[b] b is treated as a blendmeta.notecharA? Isotope numberphys.atmol.weightintnullable