J/A+A/690/A97ivo://CDS.VizieR/J/A+A/690/A97doi:10.26093/cds/vizier.36900097CDSContursi G.de Laverny P.Recio-Blanco A.Molero M.Spitoni E.,Matteucci F.Cristallo S.2026-03-03T20:01:02Z2024-10-02T09:03:10ZCDS support team

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

cds-question@unistra.frmilky-way-galaxylate-type-starschemical-abundancesvisible-astronomyultraviolet-astronomyThe chemical evolution of neutron capture elements in the Milky Way is still a matter of debate. Although more and more studies investigate their chemical behaviour, there is still a lack of a significant large sample of abundances of a key heavy element: lead. Lead is the final product of the s-process nucleosynthesis channel and is one of the most stable heavy elements. The goal of this article is to present the largest catalogue of homogeneous Pb abundances, in particular for metallicities higher than -1.0dex, and then to study the lead content of the Milky Way. We analysed high-resolution spectra from the ESO UVES and FEROS archives. Atmospheric parameters were taken from the AMBRE parametrisation. We used the automated abundance method GAUGUIN to derive LTE and NLTE lead abundances in 653 slow-rotating FGK-type stars from the 368.34nm PbI line, with metallicities ranging from -2.9 to 0.6 ex Within this sample, no lead-enhanced Asymptotic Giant Branch (AGB) stars were found, but nine lead-enhanced metal-poor stars ([Pb/Fe]>1.5) were detected. Most of them were already identified as carbon-enhanced metal-poor stars with enrichments in other s-process species. The lead abundance of 13 Gaia Benchmark Stars are also provided. We then investigated the Pb content of the Milky Way disc by computing vertical and radial gradients and found a slightly decreasing [Pb/Fe] radial trend with metallicity. This trend together with other related ratios ([Pb/Eu], [Pb/Ba], and [Pb/alpha]) are interpreted thanks to chemical evolution models. The two-infall model closely reproduces the observed trends with respect to the metallicity. It is also found that the AGB contribution to the Pb Galactic enrichment has to be strongly reduced. Moreover, the contribution of massive stars with rather high rotational velocities should be favoured in the low-metallicity regime.2024A&A...690A..97Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/690/A97CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/690/A97https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/690/A97http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/690/A97https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/690/A97https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/690/A97http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/690/A97GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/690/A97/table4 (AMBRE catalogue of lead abundances)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/690/A97/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/690/A97/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/690/A97/table4?GETtext/xml+votable180.050000true213.915291719.18238890.0055555555555555566/49 60 79 215 311 334 336 348 548 1024 1032 1042 1058 1556 2133 4136 4286 4298 4429 4512 4846 6183 8224 8244 8357 8671 8767 8790 12388 12424 12482 13025 13474 13478 14416 14419 14466 14630 14914 16393 16461 16463 16576 16652 16679 16834 16853 17054 17091 17177 17210 17218-17219 17266 17288 17332 17394 17425 17486 17496 17552 17582 17726 17730 17952 18028-18029 18032 18204 18209 18233 18276 18326 18366 18425 18483 18507 18614 18715 18737 18795 18821 18935 19237 19350 19385 19735 19904 20593 20614 20676 20701 20746 20753 20772 20797 20886 21050 21066 21089 21135 21177 21269 21296 21412 21436 21477 21531 21538 21696 21703 21726 21774 21838 21901 22036 22040 22048 22065 22078 22165 22205 22208 22210 22227 22277 22518 22541 22590 22619 22654 22754 22871 22878 22905 22960 23013 23017 23023 23030 23061 23143 23177 23196 23230 23232 23342 23479 23502 23513 23525 23527 23529 23539-23540 23545 23548 23579 24019 24028 24068 24099 24104 24178 24206 24209 24227 24357 24628 24717 24790 24827 24843 24924 25160 25210 25407 25509 25566 25595 25647 25875 25966 26120 26133 26158 26183 26242 26266 26305 26377 26462 26522 26552 26575 26652 26706 26924 26933 26997 27018 27033 27040 27088 27143 27192 27255 27374 27602 27618 27646 27710 27725 27738 27750 27954 28074 28129 28687 28711 28717 28719 28728 28782 28788 28807 28973 29083-29084 29194 29196 29269 29318 29327 29434 29437 29521 29541 29721 29765 29810 29932 29999 30233 30293 30295 30439 30450 30665 30826 30867 30878 30894 30914 30936 30939 30965 31048 31369 31374 31399 31408 31411 31425 31449 31501 31751 31956 32372 32848 32930 32937 32974 32978-32979 33027 33042 33116 33237 33258 33281 33299 33340 33377 33429 33598 33630 33849 33960 33965 34010 34033 34069 34074 34147 34199 34216 34355 34387 34427 34478 34504 34508 34581 34896 34930 34951 35088 35146 35254 35353 35497 35532 35549 35621 35831 35929 35954 35968 36035 36126 36234 36308 36379 36487 36537 36578 36590 36634-36635 36664 36713 36899 36918 37012 37070 37120 37151 37231 37316 37318 37350-37351 37419 37461 37508 37592-37593 37614 37709 37780 37788 37790 37807 37809 37920 38061 38150 38238 38303 38472 38584 38593 38630 38640 38728 38747 38788 38821 38918 38977 39034 39069 39321 39364 39443 39461 39563 39570 39576 39675 39693 39709 39711 39888 39904 40101 40105 40210 40242 40278 40321 40362 40692 40696 40703 40716 40739 40795 40802 40924 40932 40988 41460 41481 41582 41607 41612 41687 41721 41752 41763 41834 41935 41941 41986 42029 42044 42153 42224-42225 42228 42248 42274 42285 42290 42320 42415 42459 42510 42527 42600 42666 42700 42727 42760 42794 42815 42970 43022 43046 43068 43104 43127 43227-43228 43296 43310 43318 43354 43544 43639 43641 43677 43804 43813 43818 43911-43912 43980 43989 44059 44104 44108 44136 44243 44284 44337 44378 44542 44603 44653 44669 44721 44763 44883 44885 44908 44910 45143 45182 45253 45364 45382 45393 45443 45458 45489 45535 45613 45621 45669 45814 45823 45855 45914 45944 45956 46113 46239 46247 46297 46364 46367 46383 46394 46487 46544 46656 46682 46722 46734 46750 46844 46934 46982 46994 47050 47102 47107 47137 47148 47188 47212 47344 47715 47794 47842 48525 48555 48652 49078 49088 49118https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/690/A97?format=asciiUVOpticaldefaultJ/A+A/690/A97/table4AMBRE catalogue of lead abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[0/694] Sequential numbermeta.recordintNameStar namemeta.id;meta.maincharNspecNumber of analysed repeat spectrameta.numberintTeffEffective temperature (or mean if Nspec>1)Kphys.temperature.effectivefloatloggStellar surface gravity in log scale (or mean if Nspec>1)log(cm.s**-2)instr.scalefloat[Fe/H]Stellar mean metallicity (or mean if Nspec>1)phys.abund.Z;stat.meanfloat[alpha/Fe]? Abundances ratio [alpha/Fe] (or mean if Nspec>1)phys.abundfloatnullableA(Pb)LTELTE lead abundancephys.abundfloatA(Pb)NLTENon-LTE lead abundancephys.abundfloate_A(Pb)LTE[]? Lower uncertainty associated to A(Pb)LTE (A_Q16)stat.errorfloatnullableE_A(Pb)LTE[]? Upper uncertainty associated to A(Pb)LTE (A_Q84)stat.error;stat.maxfloatnullableDeltaPbQuadratic sum of errors caused by atmospheric parameters uncertaintiesstat.errordoubleSimbadNameSimbad column added by the CDSmeta.idcharnullable_RAPositons from Simbad and Gaia DR3 (right ascension part)degpos.eq.ra;meta.mainnullable_DEPositons from Simbad and Gaia DR3 (declination part)degpos.eq.dec;meta.mainnullable