J/A+A/618/A102ivo://CDS.VizieR/J/A+A/618/A102doi:10.26093/cds/vizier.36180102CDSMagrini L.Vincenzo F.Randich S.Pancino E.Casali G.Tautvaisiene G.,Drazdauskas A.Mikolaitis S.Minkeviciute R.Stonkute E.Chorniy Y.,Bagdonas V.Kordopatis G.Friel E.Roccatagliata V.,Jimenez-Esteban F.M.Gilmore G.Vallenari A.Bensby T.Bragaglia A.,Korn A.J.Lanzafame A.C.Smiljanic R.Bayo A.Casey A.R.Costado M.T.,Franciosini E.Hourihane A.JofreLewis J.Monaco L.Morbidelli L.,Sacco G.Worley C.2018-11-05T10:52:51Z2018-10-17T12:24:10ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyopen-star-clusterschemical-abundancesThe abundance ratio N/O is a useful tool to study the interplay of galactic processes, for example star formation efficiency, timescale of infall, and outflow loading factor. We aim to trace log(N/O) versus [Fe/H] in the Milky Way and to compare this ratio with a set of chemical evolution models to understand the role of infall, outflow, and star formation efficiency in the building up of the Galactic disc. We used the abundances from idr2-3, idr4, idr5 data releases of the Gaia-ESO Survey both for Galactic field and open cluster stars. We determined membership and average composition of open clusters and we separated thin and thick disc field stars. We considered the effect of mixing in the abundance of N in giant stars. We computed a grid of chemical evolution models, suited to reproduce the main features of our Galaxy, exploring the effects of the star formation efficiency, infall timescale, and differential outflow. With our samples, we map the metallicity range -0.6<=[Fe/H]<=0.3 with a corresponding -1.2<=log(N/O)<=-0.2, where the secondary production of N dominates. Thanks to the wide range of Galactocentric distances covered by our samples, we can distinguish the behaviour of log(N/O) in different parts of the Galaxy. Our spatially resolved results allow us to distinguish differences in the evolution of N/O with Galactocentric radius. Comparing the data with our models, we can characterise the radial regions of our Galaxy. A shorter infall timescale is needed in the inner regions, while the outer regions need a longer infall timescale, coupled with a higher star formation efficiency. We compare our results with nebular abundances obtained in MaNGA galaxies, finding in our Galaxy a much wider range of log(N/O) than in integrated observations of external galaxies of similar stellar mass, but similar to the ranges found in studies of individual HII regions.2018A&A...618A.102Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/618/A102CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/566/A50 : Classification of stellar spectra 644-681nm (Damiani+, 2014)J/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/603/A2 : GES abundances radial distribution (Magrini+, 2017)J/A+A/604/A128 : S abundances for 1301 stars from GES (Duffau+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/618/A102https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/618/A102http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/618/A102https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/618/A102https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/618/A102http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/618/A102GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/618/A102/tablea1 (Thin and thick disc star parameters and abundances)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/618/A102/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/618/A102/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/618/A102/tablea1?GETtext/xml+votable180.050000true331.35625-8.91208330.0055555555555555566/18476 18479 18608 18610 18614 18633 28681 28720 28722 28739 28742-28746 28749 28770 28775 28781-28784 28793 28868 28870 28970 30292-30293 30295 30466-30467 42327 42527 48511https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/618/A102?format=asciidefaultJ/A+A/618/A102/table1Open cluster parameters and abundancesSimbadNameSimbad column added by the CDSmeta.idcharNstarNumber of starsmeta.numberintDRData release number(s)meta.id;obscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id;meta.maincharAgeAgeGyrtime.agefloate_Agerms uncertainty on AgeGyrstat.error;time.agefloatMTOTurn-off mass (1)solMassphys.massfloatRGCGalactoccentric radiuskpcphys.size.radiusfloate_RGCrms uncertainty on RGCkpcstat.errorfloat[Fe/H]Metallicityphys.abund.Zfloate_[Fe/H]rms uncertainty on [Fe/H]stat.error;phys.abund.Fefloat12+log(O/H)Abundance 12+log(O/H)phys.abundfloate_12+log(O/H)rms uncertainty on 12+log(O/H)stat.errorfloat12+log(N/H)Abundance 12+log(N/H)phys.abundfloate_12+log(N/H)rms uncertainty on 12+log(N/H)stat.errorfloatJ/A+A/618/A102/tablea1Thin and thick disc star parameters and abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDisc[Thin Thick] thin or thick disc starsmeta.codecharCNameCNAME (HHMMSSss+DDMMSSs)meta.id;meta.maincharTeffEffective temperatureKphys.temperature.effectiveinte_Teffrms uncertainty on effective temperatureKstat.error;phys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloate_loggrms uncertainty on surface gravitylog(cm.s**-2)stat.errorfloatksiMicroturbulent velocitykm/sphys.velocfloate_ksirms uncertainty on microturbulent velocitykm/sstat.errorfloat[Fe/H]Metallicityphys.abund.Zfloate_[Fe/H]rms uncertainty on metallicitystat.error;phys.abund.Fefloat12+log(O/H)Abundance 12+log(O/H)phys.abundfloate_12+log(O/H)rms uncertainty on abundance 12+log(O/H)stat.errorfloat12+log(N/H)Abundance 12+log(N/H)phys.abundfloate_12+log(N/H)rms uncertainty on abundance 12+log(N/H)stat.errorfloat_RAPositions from name (right ascension part)degpos.eq.ra;meta.main_DEPositions from name (declination part)degpos.eq.dec;meta.main