J/A+A/639/A127ivo://CDS.VizieR/J/A+A/639/A127doi:10.26093/cds/vizier.36390127CDSCasali G.Spina L.Magrini L.Karakas A.Kobayashi C.Casey A.R.,Feltzing S.Van der Swaelmen M.Tsantaki M.Jofre P.Bragaglia A.,Feuillet D.Bensby T.Biazzo K.Gonneau A.Tautvaisiene G.,Baratella M.Roccatagliata V.Pancino E.Sousa S.Adibekyan V.,Martell S.Bayo A.Jackson R.J.Jeffries R.D.Gilmore G.Randich S.,Alfaro E.Koposov S.E.Korn A.J.Recio-Blanco A.Smiljanic R.,Franciosini E.Hourihane A.Monaco L.Morbidelli L.Sacco G.Worley C.,Zaggia S.2021-09-07T11:13:08Z2020-07-21T10:53:24ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyopen-star-clusterschemical-abundancesstellar-agesIn the era of large spectroscopic surveys, massive databases of high-quality spectra coupled with the products of the Gaia satellite provide tools to outline a new picture of our Galaxy. In this framework, an important piece of information is provided by our ability to infer stellar ages, and consequently to sketch a Galactic timeline. We aim to provide empirical relations between stellar ages and abundance ratios for a sample of stars with very similar stellar parameters to those of the Sun, namely the so-called solar-like stars. We investigate the dependence on metallicity, and we apply our relations to independent samples, that is, the Gaia-ESO samples of open clusters and of field stars. We analyse high-resolution and high-signal-to-noise-ratio HARPS spectra of a sample of solar-like stars to obtain precise determinations of their atmospheric parameters and abundances for 25 elements and/or ions belonging to the main nucleosynthesis channels through differential spectral analysis, and of their ages through isochrone fitting. We investigate the relations between stellar ages and several abundance ratios. For the abundance ratios with a steeper dependence on age, we perform multivariate linear regressions, in which we include the dependence on metallicity, [Fe/H]. We apply our best relations to a sample of open clusters located from the inner to the outer regions of the Galactic disc. Using our relations, we are able to recover the literature ages only for clusters located at R_GC_>7kpc. The values that we obtain for the ages of the inner-disc clusters are much greater than the literature ones. In these clusters, the content of neutron capture elements, such as Y and Zr, is indeed lower than expected from chemical evolution models, and consequently their [Y/Mg] and [Y/Al] are lower than in clusters of the same age located in the solar neighbourhood. With our chemical evolution model and a set of empirical yields, we suggest that a strong dependence on the star formation history and metallicity-dependent stellar yields of s-process elements can substantially modify the slope of the [s/{alpha}]-[Fe/H]-age relation in different regions of the Galaxy. Our results point towards a non-universal relation [s/{alpha}]-[Fe/H]-age, indicating the existence of relations with different slopes and intercepts at different Galactocentric distances or for different star formation histories. Therefore, relations between ages and abundance ratios obtained from samples of stars located in a limited region of the Galaxy cannot be translated into general relations valid for the whole disc. A better understanding of the s-process at high metallicity is necessary to fully understand the origin of these variations.2020A&A...639A.127Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/639/A127CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/572/A33 : Abundances from Gaia-ESO Survey (Mikolaitis+, 2014)J/A+A/589/A115 : Na and Al abundances of 1303 stars (Smiljanic+, 2016)J/A+A/601/A70 : GES: pre-main-sequence clusters [Fe/H] (Spina+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/639/A127https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/639/A127http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/639/A127https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/639/A127https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/639/A127http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/639/A127GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/639/A127/table2 (Atmospheric parameters and stellar ages determined for the solar-like stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/639/A127/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/639/A127/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/639/A127/table2?GETtext/xml+votable180.050000true219.90205833-60.833992690000010.0055555555555555566/108 185 222 270 336 340 359 413 513 548 4128 4206 4313 4398 4437 4665 8244 8286 8792 12312 12341 12498 12556 12890 16417 16432 16649 16652 16841 16874 16930-16931 16995 17097 17144 17177 17187 17206 17218-17219 17249 17266 17301 17341 17370 17374 17419 17447 17486 17507 17540 17572 17587 17657 17721 17804 17806 17814 17929 17944 17970 18132 18209 18366 18373 18548 18615 18623 18772 18785 18963 19003 19156 19160 19350 19491 19877 19974 20116 20145 20492 20495 20522 20548 20586 20593 20621 20623 20633 20661 20712 20746 21045 21066 21114 21121 21177 21211 21400 21484 21516 21550 21594 21784 21809 21838 21906 22118 22159 22590 22654 22746 22764 22939 23084 23096-23097 23123 23177 23269 23342 23429 23479 23495 23497 23529 23545 23575 23583 23636 23661 23780 23873 24633 24695 24720 24729 24769 24775 24876 25078 25132 25136 25225 25268 25279 25349 25424 25433 25484 25527 25565 25567 25578 25636 25648 25669 25689 25697 25756 25794-25795 25820 25854 25904 25966 26160 26242 26298 26496 26520 26547 26626 26647 26652 26679-26680 26768 26844 26888 27018 27130 27254-27255 27661 28719 28919 28961 28987 29045 29047 29236 29410 29422 29513 29564 29675 29730 29833 29838 29900 30041 30123 30157 30248 30308 30378 30450 30466 30526 30536 30720 30783 30848 30878 30894 30929 30943 31027 31029 31287 31334 31433 31503 31821 31945 32861 32937 32998 33067 33082 33219 33238 33252 33273 33344 33361 33456 33510 33528 33552 33590 33854 34090 34119 34204 34219 34253 34255 34308 34350 34364 34390 34427 34442 34519 34530 34564 34599 34646 34793 34807 34817 34856 34886 34983 35021 35036 35121 35146 35152 35214 35230 35339 35347 35351 35442 35468 35501 35532 35811 35840 35858 35954 35985 35994 36014 36285 36293 36363 36453 36517 36540 36590 36634 37047 37094 37163-37164 37306 37414 37501 37515 37519 37565 37573 37679 37831-37832 37944 37955 38099 38238 38260 38279 38311 38324 38339 38349 38415 38434 38462 38562 38566 38742 38792 38807 38834 38883 38905 38936 38960 39011 39034 39074 39141 39213 39228 39277 39316 39364 39419 39422 39441 39461 39500 39557 39566 39570 39576 39584 39633 39693 39709 39735 39767 39801 39851 39859 39877 39888 39915 39954 39977 39984 40021 40105 40183 40317 40661 40687 40722 40802 40862 40892 40921 40932 41023 41127 41167 41204 41212 41260 41441 41443 41458 41481 41591 41671 41752 41755 41763 41861 41899 41912 41941 42146 42157 42166 42179 42197 42205 42224 42228 42463 42479 42501 42656 42700 42759 42860 42887 42891 42918 42952 43001 43068 43105 43180 43247 43258 43290 43310 43315 43327 43432 43438 43541 43555 43558 43567 43641 43649 43668 43670 43680 43724 43760 43813 43818 43845 43929 43960 43977 43989 44054 44115 44131 44145 44243 44252 44315 44398 44648 44653 44672 44674 44740 44910 45034 45182 45299 45422 45430 45457 45505 45608 45621 45627 45640-45641 45646 45668 45687 45752 45837 45865 46009 46032 46053 46056 46076 46080 46172 46193 46200 46234 46247 46306 46384 46421 46487 46494 46511 46526 46544 46558 46603 46640 46681 46685 46734 46768 46820 46933 47030 47045 47073 47129 47137 47154 47167 47186 47194 47223 47308 47647 47681 47740 47842 47894 47985 48028 48065 48249 48260 48310 48335 48345 48350 48402 48519 48545 48567 48607 48736 48757 48807 48821 48865 48870 48943 49114https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/639/A127?format=asciidefaultJ/A+A/639/A127/table2Atmospheric parameters and stellar ages determined for the solar-like starsSimbadNameSimbad column added by the CDSmeta.idcharFlag[0-1] Flag (G1)meta.code.errorcharStarStar identificationmeta.id;meta.maincharloggSurface gravitylog(cm.s**-2)phys.gravityfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000? Right ascension (J2000)degpos.eq.ra;meta.mainnullableDEJ2000? Declination (J2000)degpos.eq.dec;meta.mainnullableTeffEffective temperatureKphys.temperature.effectiveint[Fe/H]Metallicityphys.abund.ZfloatvtMicroturbulence velocitykm/sphys.veloc.microTurbfloate_TeffError of effective temperatureKstat.error;phys.temperature.effectiveinte_loggError on surface gravitylog(cm.s**-2)stat.errorfloate_[Fe/H]Error on metallicitystat.error;phys.abund.Fefloate_vtError on microturbulencekm/sstat.errorfloatAge? Stellar ageGyrtime.agefloatnullablee_Age? Error on stellar ageGyrstat.error;time.agefloatnullableJ/A+A/639/A127/table3Chemical abundances for the of solar-like starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar identificationmeta.id;meta.mainchar[CI/H][-1.1/0.4] [CI/H] abundancephys.abundfloate_[CI/H][0.0/0.6] Error on [CI/H]stat.error;phys.abundfloat[NaI/H][-1.5/0.6]? [NaI/H] abundancephys.abundfloatnullablee_[NaI/H][0.0/0.4]? Error on [NaI/H]stat.error;phys.abundfloatnullable[MgI/H][-1.1/0.5] [MgI/H] abundancephys.abundfloate_[MgI/H][0.0/0.2] Error on [MgI/H]stat.error;phys.abundfloat[AlI/H][-1.5/0.5] [AlI/H] abundancephys.abundfloate_[AlI/H][0.0/0.3] Error on [AlI/H]stat.error;phys.abundfloat[SiI/H][-1.0/0.5] [SiI/H] abundancephys.abundfloate_[SiI/H][0.0/0.1] Error on [SiI/H]stat.error;phys.abundfloat[SI/H][-1.1/0.5]? [SI/H] abundancephys.abundfloatnullablee_[SI/H][0.0/0.7]? Error on [SI/H]stat.error;phys.abundfloatnullable[CaI/H][-1.0/0.5] [CaI/H] abundancephys.abundfloate_[CaI/H][0.0/0.2] Error on [CaI/H]stat.error;phys.abundfloat[ScI/H][-1.1/0.6] [ScI/H] abundancephys.abundfloate_[ScI/H][0.0/0.5] Error on [ScI/H]stat.error;phys.abundfloat[ScII/H][-1.2/0.5] [ScII/H] abundancephys.abundfloate_[ScII/H][0.0/0.2] Error on [ScII/H]stat.error;phys.abundfloat[TiI/H][-1.0/0.5] [TiI/H] abundancephys.abundfloate_[TiI/H][0.0/0.2] Error on [TiI/H]stat.error;phys.abundfloat[TiII/H][-1.1/0.5] [TiII/H] abundancephys.abundfloate_[TiII/H][0.0/0.3] Error on [TiII/H]stat.error;phys.abundfloat[VI/H][-1.3/0.5] [VI/H] abundancephys.abundfloate_[VI/H][0.0/0.2] Error on [VI/H]stat.error;phys.abundfloat[CrI/H][-1.3/0.5] [CrI/H] abundancephys.abundfloate_[CrI/H][0.0/0.2] Error on [CrI/H]stat.error;phys.abundfloat[CrII/H][-1.2/0.5] [CrII/H] abundancephys.abundfloate_[CrII/H][0.0/0.3] Error on [CrII/H]stat.error;phys.abundfloat[MnI/H][-1.8/0.6] [MnI/H] abundancephys.abundfloate_[MnI/H][0.0/0.2] Error on [MnI/H]stat.error;phys.abundfloat[FeI/H][-1.2/0.5] [FeI/H] abundancephys.abundfloate_[FeI/H][0.0/0.1] Error on [FeI/H]stat.error;phys.abundfloat[FeII/H][-1.2/0.5] [FeII/H] abundancephys.abundfloate_[FeII/H][0.0/0.2] Error on [FeII/H]stat.error;phys.abundfloat[CoI/H][-1.4/0.7] [CoI/H] abundancephys.abundfloate_[CoI/H][0.0/0.4] Error on [CoI/H]stat.error;phys.abundfloat[NiI/H][-1.3/0.5] [NiI/H] abundancephys.abundfloate_[NiI/H][0.0/0.1] Error on [NiI/H]stat.error;phys.abundfloat[CuI/H][-1.8/0.6] [CuI/H] abundancephys.abundfloate_[CuI/H][0.0/0.5] Error on [CuI/H]stat.error;phys.abundfloat[ZnI/H][-1.2/0.6]? [ZnI/H] abundancephys.abundfloatnullablee_[ZnI/H][0.0/0.3]? Error on [ZnI/H]stat.error;phys.abundfloatnullable[SrI/H][-1.3/0.9]? [SrI/H] abundancephys.abundfloatnullablee_[SrI/H][0.0/0.2]? Error on [SrI/H]stat.error;phys.abundfloatnullable[YII/H][-1.3/0.9] [YII/H] abundancephys.abundfloate_[YII/H][0.0/0.5] Error on [YII/H]stat.error;phys.abundfloat[ZrII/H][-1.0/1.0]? [ZrII/H] abundancephys.abundfloatnullablee_[ZrII/H][0.0/0.4]? Error on [ZrII/H]stat.error;phys.abundfloatnullable[BaII/H][-1.3/0.7] [BaII/H] abundancephys.abundfloate_[BaII/H][0.0/0.2] Error on [BaII/H]stat.error;phys.abundfloat[CeII/H][-1.2/0.7]? [CeII/H] abundancephys.abundfloatnullablee_[CeII/H][0.0/0.6]? Error on [CeII/H]stat.error;phys.abundfloatnullable[NdII/H][-1.0/0.5]? [NdII/H] abundancephys.abundfloatnullablee_[NdII/H][0.0/0.3]? Error on [NdII/H]stat.error;phys.abundfloatnullable[SmII/H][-1.0/1.0]? [SmII/H] abundancephys.abundfloatnullablee_[SmII/H][0.0/0.1]? Error on [SmII/H]stat.error;phys.abundfloatnullable[EuII/H][-1.0/0.7]? [EuII/H] abundancephys.abundfloatnullablee_[EuII/H][0.0/0.2]? Error on [EuII/H]stat.error;phys.abundfloatnullableFlag[0-1] Flag (G1)meta.code.errorcharJ/A+A/639/A127/table1Information about the HARPS spectra of the solar-like starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar identificationmeta.id;meta.maincharIDspectSpectrum identificationmeta.idcharObs.dateObservational datestime.epochnullableProgIDProgram IDmeta.id;obscharSeeing? Seeing (1)instr.obsty.seeingfloatnullableTexpExposure timestime.duration;obs.exposuredoubleS/NSignal-to-noise ratiostat.snrfloat