J/ApJ/749/175ivo://CDS.VizieR/J/ApJ/749/175doi:10.26093/cds/vizier.17490175CDSJohnson C.I.Rich R.M.Kobayashi C.Fulbright J.P.2017-12-12T14:44:22Z2014-01-15T10:16:56ZCDS support team

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

cds-question@unistra.frchemical-abundancesgiant-starsWe report chemical abundances of Na, Al, Zr, La, Nd, and Eu for 39 red giant branch (RGB) stars and 23 potential inner disk red clump stars located in Plaut's low-extinction window. We also measure lithium for a super Li-rich RGB star. The abundances were determined by spectrum synthesis of high-resolution (R{approx}25000), high signal-to-noise (S/N ~ 50-100/pixel) spectra obtained with the Blanco 4m telescope and Hydra multifiber spectrograph. For the bulge RGB stars, we find a general increase in the [Na/Fe] and [Na/Al] ratios with increasing metallicity, and a similar decrease in [La/Fe] and [Nd/Fe]. Additionally, the [Al/Fe] and [Eu/Fe] abundance trends almost identically follow those of the {alpha}-elements, and the [Zr/Fe] ratios exhibit relatively little change with [Fe/H]. The consistently low [La/Eu] ratios of the RGB stars indicate that at least a majority of bulge stars formed rapidly (<~1Gyr) and before the main s-process could become a significant pollution source. In contrast, we find that the potential inner disk clump stars exhibit abundance patterns more similar to those of the thin and thick disks. Comparisons between the abundance trends at different bulge locations suggest that the inner and outer bulges formed on similar timescales. However, we find evidence of some abundance differences between the most metal-poor and metal-rich stars in various bulge fields. The data also indicate that the halo may have had a more significant impact on the outer bulge initial composition than the inner bulge composition. The [Na/Fe], and to a lesser extent [La/Fe], abundances further indicate that the metal-poor bulge, at least at ~1 kpc from the Galactic center, and thick disk may not share an identical chemistry.2012ApJ...749..175Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/749/175CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/A+A/546/A57 : Spectro. of 400 red giants in the Bulge (Uttenthaler+, 2012)J/ApJ/732/108 : Pap I. 92 giants abundances in Plaut's window (Johnson+, 2011)J/A+A/513/A35 : Abundances of Galactic red giants (Alves-Brito+, 2010)J/A+A/465/799 : Abundances of Galactic Bulge red giants (Lecureur+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/749/175https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/749/175http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/749/175https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/749/175https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/749/175http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/749/175GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/749/175/table2 (Model atmosphere parameters and abundance ratios)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/749/175/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/749/175/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/749/175/table2?GETtext/xml+votable180.050000true274.4388333-33.88986110.0055555555555555566/28738 28744 28745https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/749/175?format=asciiOpticaldefaultJ/ApJ/749/175/table3Error estimationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[a-f] Type of variation (1)stat.paramchar2MASS2MASS identification (HHMMSSss+DDMMSSs; J2000)meta.id;meta.mainchard[Na/Fe][-0.2/0.3]? [Na/Fe] variation with Typelog(Sun)stat.errorfloatnullabled[Al/Fe][-0.2/0.3]? [Al/Fe] variation with Typelog(Sun)stat.errorfloatnullabled[Zr/Fe][-0.4/0.5]? [Zr/Fe] variation with Typelog(Sun)stat.errorfloatnullabled[La/Fe][-0.3/0.4]? [La/Fe] variation with Typelog(Sun)stat.errorfloatnullabled[Nd/Fe][-0.2/0.3]? [Nd/Fe] variation with Typelog(Sun)stat.errorfloatnullabled[Eu/Fe][-0.1/0.3]? [Eu/Fe] variation with Typelog(Sun)stat.errorfloatnullable2MDisplay the 2MASS data for this star (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharJ/ApJ/749/175/table2Model atmosphere parameters and abundance ratiosrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identification (HHMMSSss+DDMMSSs; J2000)meta.id;meta.maincharprimaryTeff[4000/4950] Effective temperatureKphys.temperature.effectiveintlogg[0.8/2.5] Surface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H][-1.6/0.5] Metallicitylog(Sun)phys.abund.ZfloatVt[1.1/2.1] Turbulent velocitykm/sphys.veloc.microTurbfloat[Na/Fe][-0.7/0.6]? [Na/Fe] abundancelog(Sun)phys.abundfloatnullable[Al/Fe][-0.6/0.6]? [Al/Fe] abundancelog(Sun)phys.abundfloatnullable[Zr/Fe][-0.5/1.2]? [Zr/Fe] abundancelog(Sun)phys.abundfloatnullable[La/Fe][-0.6/1.5]? [La/Fe] abundancelog(Sun)phys.abundfloatnullable[Nd/Fe][-0.5/1.3]? [Nd/Fe] abundancelog(Sun)phys.abundfloatnullable[Eu/Fe][-0.3/1]? [Eu/Fe] abundancelog(Sun)phys.abundfloatnullableType[RGB Clump] RGB=probable RGB member; Clump=probable red clump star membersrc.classcharField[1/2] Field number (1)meta.id;obs.fieldint2MDisplay the 2MASS data for this star (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharPapIDisplay the Paper I data for this star (Johnson et al. 2011, Cat. J/ApJ/732/108)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.refchar_RAPositions from 2MASS names (right ascension part)degpos.eq.ra;meta.main_DEPositions from 2MASS names (declination part)degpos.eq.dec;meta.main