J/A+A/634/A130ivo://CDS.VizieR/J/A+A/634/A130doi:10.26093/cds/vizier.36340130CDSBensby T.Feltzing S.Yee J.Johnson J.A.Gould A.Asplund M.,Melendez J.Lucatello S.2020-12-22T13:26:03Z2020-02-25T07:40:30ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyg-starschemical-abundancesLithium abundances are presented for 91 dwarf and subgiant stars in the Galactic bulge. The analysis is based on line synthesis of the ^7^Li line at 6707{AA} in high-resolution spectra obtained during gravitational microlensing events, when the brightnesses of the targets were highly magnified. Our main finding is that bulge stars at sub-solar metallicities that are older than about eight billion years do not show any sign of Li production; that is, the Li trend with metallicity is flat or even slightly declining. This indicates that no lithium was produced during the first few billion years in the history of the bulge. This finding is essentially identical to what is seen for the (old) thick disk stars in the solar neighbourhood, and adds another piece of evidence for a tight connection between the metal-poor bulge and the Galactic thick disk. For the bulge stars younger than about eight billion years, the sample contains a group of stars at very high metallicities at [Fe/H]~=+0.4 that have lithium abundances in the range A(Li)=2.6-2.8. In the solar neighbourhood the lithium abundances have been found to peak at A(Li)~=3.3 at [Fe/H]~=+0.1 and then decrease by 0.4-0.5dex when reaching [Fe/H]~=+0.4. The few bulge stars that we have at these metallicities seem to support this declining A(Li) trend. This could indeed support the recent claim that the low A(Li) abundances at the highest metallicities seen in the solar neighbourhood could be due to stars from the inner disk, or the bulge region, that have migrated to the solar neighbourhood.2020A&A...634A.130Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/634/A130CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/615/A151 : Li abundances in 714 F and G dwarf stars (Bensby+, 2018)J/A+A/605/A89 : Abundances of microlensed bulge stars. VI. (Bensby+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/634/A130https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/634/A130http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/634/A130https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/634/A130https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/634/A130http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/634/A130GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/634/A130/table1 (Li abundances and uncertainties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/634/A130/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/634/A130/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/634/A130/table1?GETtext/xml+votable180.050000true270.5320833-31.4240.0055555555555555565/7194 7205 7216-7217 7220 6/28711 28715 28717-28718 28723 28726 28729 28731 28733-28735 28770 28780 28782-28783 28794 28804 28817 28839 28857 28872-28873 28884 28888 29184https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/634/A130?format=asciidefaultJ/A+A/634/A130/table1Li abundances and uncertaintiesSimbadNameSimbad column added by the CDSmeta.idcharALiNLTE corrected Li abundancephys.abundfloatALil? NLTE corrected lower Li abundancephys.abundfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of microlensing source starmeta.id;meta.maincharNumInternal numbering of starmeta.idintALiu? NLTE corrected upper Li abundancephys.abundfloatnullableNLTENLTE correction that were appliedarith.factorfloatl_ALi[0/1] Limit flag on ALi (1)meta.code.errorint_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main