J/A+A/713/A148ivo://CDS.VizieR/J/A+A/713/A148CDSDas P.B.Primas F.De Silva G.Guiglion G.Zucker D.B.Ness M.2026-09-20T16:20:57Z2026-09-15T18:44:47ZCDS support team

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

cds-question@unistra.frsurveysopen-star-clusterschemical-abundancesspectroscopyNeutron-capture element abundances encode the time-dependent interplay between slow (s-) and rapid (r-) nucleosynthetic processes and provide critical constraints on Galactic chemical evolution. In particular, barium and europium provide important tracers of s-process and r-process nucleosynthetic enrichment, respectively. Large spectroscopic surveys enable robust statistical studies of these elements; however, determining reliable elemental abundances at intermediate spectral resolution remains challenging. Our aim was to derive homogeneous and statistically well-characterised stellar parameters and chemical abundances of Ba and Eu (hereafter collectively referred to as stellar labels) for the Gaia-ESO Survey HR15N dataset. We applied The Cannon to 36263 FLAMES/GIRAFFE HR15N spectra (R~19200, lambda~6440-6815 Angstrom), using a model trained on 782 stars with high-quality reference stellar labels drawn from the Gaia-ESO DR5 homogenised catalogue. The model infers Teff, logg, [Fe/H], vsini, A(Ba), and A(Eu); its reliability was quantified through multi-dimensional quality flags for the labels and detection strength of the Ba and Eu features. The uncertainties in the inferred stellar labels were obtained by combining the model's internal label-covariance errors with signal-to-noise-dependent dispersions. Our final catalogue contains stellar parameters for 36263 spectra, with ~21000 and ~400 reliable Ba and Eu abundances, respectively, satisfying multiple flagging criteria. We obtained median uncertainties of ~38K in Teff, ~0.08dex in logg, ~0.04dex in [Fe/H], ~0.06dex in A(Ba), and ~0.02dex in A(Eu). External validation against the Gaia Benchmark Stars, GALAH DR4, and multiple open clusters shows good agreement across independent reference datasets. This study provides a comprehensive dataset of neutron-capture abundances in the Galactic disc observed with the Gaia-ESO HR15N set-up. The resulting catalogue includes newly determined Ba and Eu abundances that complement those available from previous analyses, thereby enabling well-characterised investigations of neutron-capture enrichment patterns in open clusters. The model framework can readily be adapted to upcoming wide-field spectroscopic surveys such as 4MOST, WEAVE, and WST.2026A&A...713A.148Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/713/A148CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/676/A129 : Gaia-ESO catalogue version 5.1 (Hourihane+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/713/A148https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/713/A148http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/713/A148https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/713/A148https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/713/A148http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/713/A148GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/713/A148/ges_can (*Stellar parameters and Ba/Eu abundances (Table A1))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/713/A148/ges_can?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/713/A148/ges_can?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/713/A148/ges_can?GETtext/xml+votable180.050000true0.02879166667-29.749583333330.0055555555555555565/4122 5429 5514 5723 5909 5934 9239 9282 9307 9329 9398 9838 9924 6/15 4366 4376 4444 4574 4783 6148-6149 8767 8845 9216 12341 12953 13411 14336 16447 16576-16577 16603 17028 17425 18366 18907 19676 20100 20562 20763 20834 20896 20975 21372 21518-21519 21528-21529 21550 21556 21567 21594 21610 21730 22078-22079 22118 22120 22224-22225 22237 22239 22249 22300 22432-22433 22498-22499 22807 22980-22981 23096 23328 23497 23540 23547 23612 23695 23704-23706 23717 23719 23728 23730-23731 23745 23776 23820 24322 24328 24330 24344-24345 24715 24777 26302 26457 26552 26560 26583 26772 26975 27255 28548 28687 28806-28807 28812-28813 28822-28823 28889-28891 29523 29951 30122 30215 30221 30226 30292-30293 30295 30301 30308 30464 30466-30467 30472-30473 30635 30878 31087 31293 31756 31781 31785 31787-31788 31790 31809 31812 32089 32969 33281 33634-33635 33640-33641 34073 34317 35118 35361 36035 36693 36697 36947 36950 36953 36955 37122-37123 37225 37227 37240-37242 37278-37279 37313 37586-37587 37785 37787-37788 37790 37809 37812 37933 37938 37944 38016 38018 38216 38441 38566 38936 39181 39183 39192 39194 39205 39216-39218 39252 39254 39257 39259-39260 39358 39374 39672 39685 40021 41466 41649 41678 41763 41852 42081 42153 42156 42166 42248 42374 42380 42394 42464 42496 42948 42959 42980-42981 42983 42992 43034 43228 43665 44542 44921 45721 45944 47022 47952 48964https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/713/A148?format=asciidefaultJ/A+A/713/A148/ges_can*Stellar parameters and Ba/Eu abundances (Table A1)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObjIDGaia-ESO object identifier (ObjID)meta.id;meta.maincharGESFieldGaia-ESO field name (GES_FLD)obs.fieldcharRAJ2000Right Ascension (J2000) (RA)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000) (DEC)degpos.eq.dec;meta.mainindexedS/NSignal-to-noise ratio of spectra (S/N)stat.snrdoublerchisqReduced chi-square value for The Cannon-fitted spectra (rchi_sq)stat.fit.chi2doubleTeffThe Cannon-derived effective temperature (Teff)Kphys.temperature.effectiveinte_TeffUncertainty in effective temperature (e_Teff)Kstat.error;phys.temperature.effectiveintloggThe Cannon-derived surface gravity (logg)log(cm.s**-2)phys.gravitydoubleSimbadSimbad column added by the CDSmeta.ref.urlchare_loggUncertainty in surface gravity (e_logg)log(cm.s**-2)stat.errordoublevsiniThe Cannon-derived projected rotational velocity (vsini)km/sphys.veloc.rotatdoublee_vsiniUncertainty in projected rotational velocity (e_vsini)km/sstat.error;phys.veloc.rotatdouble[Fe/H]The Cannon-derived [Fe/H] (FeH)phys.abund.Fedoublee_[Fe/H]Uncertainty in [Fe/H] (e_FeH)stat.error;phys.abund.FedoubleFlagatm[0/1]? Distance-based quality flag for stellar parameters (flag_atm) (1)meta.code.errorintnullableAtmDistLabel distance for stellar parameters (atm_dist)pos.distancedoubleA(Ba)The Cannon-derived A(Ba) (A(Ba))phys.abunddoublee_A(Ba)Uncertainty in A(Ba) (e_A(Ba))stat.errordouble[Ba/Fe]The Cannon-derived [Ba/Fe] (BaFe)phys.abunddoublee_[Ba/Fe]Uncertainty in [Ba/Fe] (e_BaFe)stat.error;phys.abunddoubleflagBa[0/1]? Distance-based quality flag for Ba (flag_Ba) (2)meta.code.errorintnullableBaDistLabel distance for A(Ba) (Ba_dist)pos.distancedouble3sigmaBa[0/1]? Flag for Ba detection at 3-sigma significance (3-sigma_Ba) (3)meta.codeintnullablerchisqBaReduced chi-square value for The Cannon-fitted spectra in Ba wavelength window (rchi_sq_Ba)stat.fit.chi2doubleA(Eu)The Cannon-derived A(Eu) (A(Eu))phys.abunddoublee_A(Eu)Uncertainty in A(Eu) (e_A(Eu))stat.errordouble[Eu/Fe]The Cannon-derived [Eu/Fe] (EuFe)phys.abunddoublee_[Eu/Fe]Uncertainty in [Eu/Fe] (e_EuFe)stat.error;phys.abunddoubleflagEu[0/1]? Distance-based quality flag for Eu (flag_Eu) (2)meta.code.errorintnullableEuDistLabel distance for A(Eu) (Eu_dist)pos.distancedouble3sigmaEu[0/1]? Flag for Eu detection at 3-sigma significance (3-sigma_Eu) (3)meta.codeintnullablerchisqEuReduced chi-square value for The Cannon-fitted spectra in Eu wavelength window (rchi_sq_Eu)stat.fit.chi2double