J/A+A/690/A334ivo://CDS.VizieR/J/A+A/690/A334doi:10.26093/cds/vizier.36900334CDSPalla M.Magrini LSpitoni E.Matteucci F.Viscasillas Vazquez C.,Franchini M.Molero M.Randich S.2025-02-18T20:01:24Z2024-10-21T09:49:23ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyopen-star-clusterschemical-abundancesspectroscopyRecent evidence from spectroscopic surveys points towards the presence of a metal-poor, young stellar population in the low-alpha, chemically thin disk. In this context, the investigation of the spatial distribution and time evolution of precise, unbiased abundances is fundamental to disentangle the scenarios of formation and evolution of the Galaxy. We study the evolution of abundance gradients in the Milky Way by taking advantage of a large sample of open star clusters, which are among the best tracers for this purpose. In particular, we used data from the last release of the Gaia-ESO survey. We performed a careful selection of open cluster member stars, excluding those members that may be affected by biases in spectral analysis. We compared the cleaned open cluster sample with detailed chemical evolution models for the Milky Way, using well-tested stellar yields and prescription for radial migration. We tested different scenarios of Galaxy evolution to explain the data, namely, the two-infall and the three-infall frameworks, which suggest the chemical thin disk is formed by one or two subsequent gas accretion episodes, respectively. With the performed selection in cluster member stars, we still find a metallicity decrease between intermediate-age (1<Age/Gyr<3) and young (Age<1Gyr) open clusters. This decrease cannot be explained in the context of the two-infall scenario, even by accounting for the effect of migration and yield prescriptions. The three-infall framework, with its late gas accretion in the last 3Gyr, is able to explain the low metallic content in young clusters. However, we have invoked a milder metal dilution for this gas infall episode relative to previous findings. To explain the observed low metallic content in young clusters, we propose that a late gas accretion episode triggering a metal dilution would have taken place, extending the framework of the three-infall model for the first time to the entire Galactic disk.2024A&A...690A.334Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/690/A334CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/660/A135 : 62 Galactic open clusters abundancesJ/A+A/669/A119 : Radial abundance gradient with open clusters (Magrini+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/690/A334https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/690/A334http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/690/A334https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/690/A334https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/690/A334http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/690/A334GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/690/A334/tablec1 (Abundance, ages, distances and orbital parameters for clusters in the 'restricted sample')https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/690/A334/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/690/A334/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/690/A334/tablec1?GETtext/xml+votable180.050000true285.419-0.4540.0055555555555555566/4298 6149 14336 14575 16490 20562 20763 20814 20939 20989 21372 21519 21529 21550 21557 21567 21719 22130 22216 22239 22433 22499 22887 23612 23638 23745 23861 24322 24330 24344 28823 29066 29728 30215 30308 30635 31812 32089 37592 37867 37933 37971 38441 39356 41466 41613 41649 41678 41834 42177 42402 42496 43034 43140https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/690/A334?format=asciidefaultJ/A+A/690/A334/tablec1Abundance, ages, distances and orbital parameters for clusters in the 'restricted sample'A(Eu)? Mean Europium abundance (1)phys.abundfloatnullableAgeCluster ageGyrtime.agefloatUGalactic space velocity U componentkm/sphys.veloc;pos.cartesian.xfloatVGalactic space velocity V componentkm/sphys.veloc;pos.cartesian.yfloatWGalactic space velocity W componentkm/sphys.veloc;pos.cartesian.zfloatxGalactocentric coordinate x componentpcpos.cartesian.x;pos.galactocentricdoubleyGalactocentric coordinate y componentpcpos.cartesian.y;pos.galactocentricdoublezGalactocentric coordinate z componentpcpos.cartesian.z;pos.galactocentricdoubleRgcGalactocentric radiuskpcphys.size.radius;pos.galactocentricfloatRguideOrbit guiding radiuskpcphys.size.radiusfloateccOrbit eccentricitysrc.orbital.eccentricityfloatZmaxOrbit maximum heightkpcpos.cartesian.z;pos.galacticfloatLpOrbital angular momentum p componentkm.s**-1.kpcphys.angMomentumfloatLrOrbital angular momentum r componentkm.s**-1.kpcphys.angMomentumfloatLzOrbital angular momentum z componentkm.s**-1.kpcphys.angMomentumdoubleEOrbital energykm**2.s**-2src.orbitaldouble_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.mainGES-OCGES open cluster IDmeta.id;meta.mainchar[Fe/H]Mean metallicityphys.abund.Z;stat.meanfloatA(O)? Mean Oxygen abundance (1)phys.abundfloatnullableA(Mg)Mean Magnesium abundance (1)phys.abundfloatA(Al)? Mean Allumium abundance (1)phys.abundfloatnullableA(Si)Mean Silicon abundance (1)phys.abundfloatA(Ca)Mean Calcium abundance (1)phys.abundfloatA(Sc)Mean Scandium abundance (1)phys.abundfloatA(Ti)Mean Titanium abundance (1)phys.abundfloatA(V)Mean Vanadium abundance (1)phys.abundfloatA(Cr)Mean Chromium abundance (1)phys.abundfloatA(Mn)? Mean Manganese abundance (1)phys.abundfloatnullableA(Co)? Mean Cobalt abundance (1)phys.abundfloatnullableA(Ni)Mean Nickel abundance (1)phys.abundfloatA(Cu)? Mean Copper abundance (1)phys.abundfloatnullableA(Zn)Mean Zinc abundance (1)phys.abundfloatA(Y)Mean Yttrium abundance (1)phys.abundfloatA(ZrI)? Mean Zirconium abundance (1)(2)phys.abundfloatnullableA(ZrII)? Mean Zirconium abundance (1)(2)phys.abundfloatnullableA(Mo)? Mean Molybdenum abundance (1)phys.abundfloatnullableA(Ba)Mean Barium abundance (1)phys.abundfloatA(La)? Mean Lathanum abundance (1)phys.abundfloatnullableA(Ce)? Mean Cerium abundance (1)phys.abundfloatnullableA(Pr)? Mean Praseodynium abundance (1)phys.abundfloatnullableA(Nd)? Mean Neodinium abundance (1)phys.abundfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadNameSimbad column added by the CDSmeta.idcharnullable