J/A+A/687/A164ivo://CDS.VizieR/J/A+A/687/A164doi:10.26093/cds/vizier.36870164CDSVitali S.Slumstrup D.Jofre P.Casamiquela L.Korhonen H.,Blanco-Cuaresma S.Winther M.L.Aguirre Bosen-Koch V.2024-11-21T20:01:58Z2024-07-05T09:16:17ZCDS support team

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

cds-question@unistra.frmilky-way-galaxygiant-starsspectroscopychemical-abundancesstellar-agesGiven the massive spectroscopic surveys and the Gaia mission, the Milky Way has turned into a unique laboratory to be explored using abundance ratios that show a strong dependency with time. Within this framework, the data provided through asteroseismology serve as a valuable complement. Yet, it has been demonstrated that chemical traits can not be used as universal relations across the Galaxy. The aim of this work is to investigate the dependence on metallicity of the chemical ratios employed for inferring stellar ages. We aim to explore different combinations of neutron-capture, odd-Z and alpha elements as a function of age, particularly focusing on their metallicity dependence for a sample of 74 giant field stars. Using UVES observations, we derive atmospheric parameters and high-precision line-by-line chemical abundances (<0.04dex) for the entire set of spectra, which covers a wide spread in age (up to 14Gyr) and metallicity (-0.7<[Fe/H]<+0.1). Stellar ages are inferred from astereoseismic information. By fitting chemical-age trends for three different metallicity groups, we estimated their dependence on metallicity. Simultaneously, we identified those exhibiting stronger correlations with time. We found that the stronger chemical-age relations ([Zr/alpha]) Are not necessarily the ratios with the smaller dependence on metallicity ([Ce/alpha] and [Ce/Eu]). We confirm the [n-capture/alpha]-age trends for evolved stars, wherein the most significant correlation is evident in stars with solar-metallicity, gradually diminishing in stars with lower iron content. The lack of homogeneity within the metallicity range highlights the intricate nature of our Galaxy's star formation history and yield production. The dependence on metallicity of the yields involving s-process elements and the influence of radial stellar migration pose challenges to relying solely on chemical abundances for dating stars. These findings contest the feasibility of establishing universally applicable chemical clocks valid across the entire Galaxy and across various metallicity ranges.2024A&A...687A.164Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/687/A164CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/687/A164https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/687/A164http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/687/A164https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/687/A164https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/687/A164http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/687/A164GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/687/A164/abund (Results of the spectroscopic analysis for each star stellar parameters, mean abundances and the corresponding uncertainties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/687/A164/abund?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/687/A164/abund?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/687/A164/abund?GETtext/xml+votable180.050000true204.1088792-16.70277250.0055555555555555566/284 328 339 367 375 381 408 410-411 452 455 464 468-470 473 1058 18438 18448 18468 18470 18478 18481 18536-18537 18571 18573 18582 18632 18662 23482 25605 25607 25616 26941 26958 26972-26973 26975 26980 26984 27002 27006-27007 27029 27077 27095 27121 42879 42941 42984 42986 44305 44364 48501https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/687/A164?format=asciidefaultJ/A+A/687/A164/linesLine used for the spectral analysisrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaCentral wavelengthnmem.wl.centraldoubleElElement symbol (e.g. Fe 1)phys.atmol.elementcharloggfAdopted log(gf) valuestat.value;arith.zpfloatEPExcitation potentialphys.atmol.excitationfloatJ/A+A/687/A164/abundResults of the spectroscopic analysis for each star stellar parameters, mean abundances and the corresponding uncertaintiesSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 identifiermeta.id;meta.mainTeffSurface temperatureKphys.temperaturefloate_TeffSurface temperature uncertaintyKstat.error;phys.temperature.effectivefloatloggspecSurface gravity from spectroscopylog(cm.s**-1)phys.gravityfloate_loggspecSurface gravity uncertaintylog(cm.s**-1)stat.errorfloatloggseismicSurface gravity from seismic relationlog(cm.s**-1)phys.gravitydoublee_loggseismicSurface gravity uncertaintylog(cm.s**-1)stat.errordoublevmicMicroturbolence velocitykm/sphys.veloc.microTurbfloate_vmicMicroturbolence velocity uncertaintykm/sstat.errorfloat[Fe/H]Mean abundance [Fe/H]phys.abundfloate_[Fe/H]rms uncertainty on abundance [Fe/H]stat.error;phys.abund.Fedouble[Mg/H]Mean abundance [Mg/H]phys.abundfloate_[Mg/H]rms uncertainty on abundance [Mg/H]stat.error;phys.abunddouble[Si/H]Mean abundance [Si/H]phys.abundfloate_[Si/H]rms uncertainty on abundance [Si/H]stat.error;phys.abunddouble[Ti/H]Mean abundance [Ti/H]phys.abundfloate_[Ti/H]rms uncertainty on abundance [Ti/H]stat.error;phys.abunddouble[Y/H]Mean abundance [Y/H]phys.abundfloate_[Y/H]rms uncertainty on abundance [Y/H]stat.error;phys.abunddouble[Al/H]? Mean abundance [Al/H]phys.abundfloatnullablee_[Al/H]? rms uncertainty on abundance [Al/H]stat.error;phys.abunddoublenullable[Sr/H]Mean abundance [Sr/H]phys.abundfloate_[Sr/H]rms uncertainty on abundance [Sr/H]stat.error;phys.abunddouble[Ca/H]Mean abundance [Ca/H]phys.abundfloate_[Ca/H]rms uncertainty on abundance [Ca/H]stat.error;phys.abunddouble[Zr/H]Mean abundance [Zr/H]phys.abundfloate_[Zr/H]rms uncertainty on abundance [Zr/H]stat.error;phys.abunddouble[Zn/H]Mean abundance [Zn/H]phys.abundfloate_[Zn/H]rms uncertainty on abundance [Zn/H]stat.error;phys.abunddouble[La/H]Mean abundance [La/H]phys.abundfloate_[La/H]rms uncertainty on abundance [La/H]stat.error;phys.abunddouble[Ce/H]Mean abundance [Ce/H]phys.abundfloate_[Ce/H]rms uncertainty on abundance [Ce/H]stat.error;phys.abunddouble[Nd/H]Mean abundance [Nd/H]phys.abundfloate_[Nd/H]rms uncertainty on abundance [Nd/H]stat.error;phys.abunddouble[V/H]Mean abundance [V/H]phys.abundfloate_[V/H]rms uncertainty on abundance [V/H]stat.error;phys.abunddouble[Eu/H]Mean abundance [Eu/H]phys.abundfloate_[Eu/H]rms uncertainty on abundance [Eu/H]stat.error;phys.abunddouble[Na/H]Mean abundance [Na/H]phys.abundfloate_[Mn/H]rms uncertainty on abundance [Mn/H]stat.error;phys.abunddouble[Co/H]Mean abundance [Co/H]phys.abundfloate_[Na/H]rms uncertainty on abundance [Na/H]stat.error;phys.abunddouble[Sc/H]Mean abundance [Sc/H]phys.abundfloate_[Sc/H]rms uncertainty on abundance [Sc/H]stat.error;phys.abunddouble[Cr/H]Mean abundance [Cr/H]phys.abundfloate_[Cr/H]rms uncertainty on abundance [Cr/H]stat.error;phys.abunddouble[Mn/H]Mean abundance [Mn/H]phys.abundfloate_[Co/H]rms uncertainty on abundance [Co/H]stat.error;phys.abunddouble[Ni/H]Mean abundance [Ni/H]phys.abundfloate_[Ni/H]rms uncertainty on abundance [Ni/H]stat.error;phys.abunddouble[Cu/H]Mean abundance [Cu/H]phys.abundfloate_[Cu/H]rms uncertainty on abundance [Cu/H]stat.error;phys.abunddoubleAgeBASTAmyrBASTA ages in MyrMyrtime.ageintAgeBASTAgyrBASTA ages in GyrGyrtime.agefloate_AgeBASTAmyrBASTA ages uncertainty in MyrMyrstat.errorinte_AgeBASTAgyrBASTA ages uncertainty in GyrGyrstat.errorfloat_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.main2MASS2MASS identifier (JHHMMSSss+DDMMSSs)meta.idchar