J/A+A/622/A191ivo://CDS.VizieR/J/A+A/622/A191doi:10.26093/cds/vizier.36220191CDSMasseron T.Garcia-Hernandez D.A.Meszaros S.Zamora O.Dell'Agli F.,Allende Prieto C.Edvardsson B.Shetrone M.Plez B.,Fernandez-Trincado J.G.Cunha K.Jonsson H.Geisler D.Beers T.C.,Cohen R.E.2021-02-10T08:29:09Z2019-02-21T15:31:22ZCDS support team

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

cds-question@unistra.frglobular-star-clusterschemical-abundancesWe seek to provide abundances of a large set of light and neutron-capture elements homogeneously analyzed that cover a wide range of metallicity to constrain globular cluster (GC) formation and evolution models. We analyzed a large sample of 885 GCs giants from the SDSS~IV-Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey. We used the Cannon results to separate the red giant branch and asymptotic giant branch stars, not only allowing for a refinement of surface gravity from isochrones, but also providing an independent H-band spectroscopic method to distinguish stellar evolutionary status in clusters. We then used the Brussels Automatic Code for Characterizing High accUracy Spectra (BACCHUS) to derive metallicity, microturbulence, macroturbulence, many light-element abundances, and the neutron-capture elements Nd and Ce for the first time from the APOGEE GCs data. Our independent analysis helped us to diagnose issues regarding the standard analysis of the APOGEE DR14 for low-metallicity GC stars. Furthermore, while we confirm most of the known correlations and anticorrelation trends (Na-O, Mg-Al, C-N), we discover that some stars within our most metal-poor clusters show an extreme Mg depletion and some Si enhancement. At the same time, these stars show some relative Al depletion, displaying a turnover in the Mg-Al diagram. These stars suggest that Al has been partially depleted in their progenitors by very hot proton-capture nucleosynthetic processes. Furthermore, we attempted to quantitatively correlate the spread of Al abundances with the global properties of GCs. We find an anticorrelation of the Al spread against clusters metallicity and luminosity, but the data do not allow us to find clear evidence of a dependence of N against metallicity in the more metal-poor clusters. Large and homogeneously analyzed samples from ongoing spectroscopic surveys unveil unseen chemical details for many clusters, including a turnover in the Mg-Al anticorrelation, thus yielding new constrains for GCs formation/evolution models.2019A&A...622A.191Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/622/A191CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/622/A191https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/622/A191http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/622/A191https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/622/A191https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/622/A191http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/622/A191GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/622/A191/table2 (Stellar parameters and abundances for the 885 globular clusters stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/622/A191/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/622/A191/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/622/A191/table2?GETtext/xml+votable180.050000true259.092833342.96766670.0055555555555555566/9436 9664 9666 10321 10336-10337 12405 12407 12943 19090-19091 27975 27981 27992 30769 31416-31417https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/622/A191?format=asciidefaultJ/A+A/622/A191/table2Stellar parameters and abundances for the 885 globular clusters starse_[Fe/H]? Error on log Fe/Hlog(Sun)stat.error;phys.abund.FefloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASSStar 2MASS identifier (HHMMSSss+DDMMSSs, J2000)meta.id;meta.maincharClusterCluster namemeta.id.parentcharEvolStellar evolutionary status (RGB, HB or eAGB)meta.code.status;time.agecharTeffPhotometric effective temperatureKphys.temperature.effectiveintloggLog surface gravity; from isochroneslog(cm.s**-2)phys.gravityfloat[Fe/H]? Log Fe/H abundancelog(Sun)phys.abund.Fefloatnullablel_[C/Fe]Upper limit flag on [C/Fe]meta.code.error;phys.abundchar[C/Fe]? Log C/Fe abundancelog(Sun)phys.abundfloatnullablee_[C/Fe]? Error on log C/Fe abundancelog(Sun)stat.error;phys.abundfloatnullableo_[C/Fe]Number of lines for log C/Fe abundancemeta.numberintl_[N/Fe]Upper limit flag on [N/Fe]meta.code.error;phys.abundchar[N/Fe]? Log N/Fe abundancelog(Sun)phys.abundfloatnullablee_[N/Fe]? Error on log N/Fe abundancelog(Sun)stat.error;phys.abundfloatnullableo_[N/Fe]Number of lines for log N/Fe abundancemeta.numberintl_[O/Fe]Upper limit flag on [O/Fe]meta.code.error;phys.abundchar[O/Fe]? Log O/Fe abundancelog(Sun)phys.abundfloatnullablee_[O/Fe]? Error on log O/Fe abundancelog(Sun)stat.error;phys.abundfloatnullableo_[O/Fe]Number of lines for log O/Fe abundancemeta.numberintl_[Mg/Fe]Upper limit flag on [Mg/Fe]meta.code.error;phys.abundchar[Mg/Fe]? Log Mg/Fe abundancelog(Sun)phys.abundfloatnullablee_[Mg/Fe]? Error on log Mg/Fe abundancelog(Sun)stat.error;phys.abundfloatnullableo_[Mg/Fe]Number of lines for log Mg/Fe abundancemeta.numberintl_[Al/Fe]Upper limit flag on [Al/Fe]meta.code.error;phys.abundchar[Al/Fe]? Log Al/Fe abundancelog(Sun)phys.abundfloatnullablee_[Al/Fe]? Error on log Al/Fe abundancelog(Sun)stat.error;phys.abundfloatnullableo_[Al/Fe]Number of lines for log Al/Fe abundancemeta.numberintl_[Si/Fe]Upper limit flag on [Si/Fe]meta.code.error;phys.abundchar[Si/Fe]? Log Si/Fe abundancelog(Sun)phys.abundfloatnullablee_[Si/Fe]? Error on log Si/Fe abundancelog(Sun)stat.error;phys.abundfloatnullableo_[Si/Fe]Number of lines for log Si/Fe abundancemeta.numberintl_[K/Fe]Upper limit flag on [K/Fe]meta.code.error;phys.abundchar[K/Fe]? Log K/Fe abundancelog(Sun)phys.abundfloatnullablee_[K/Fe]? Error on log K/Fe abundancelog(Sun)stat.error;phys.abundfloatnullableo_[K/Fe]Number of lines for log K/Fe abundancemeta.numberintl_[Ca/Fe]Upper limit flag on [Ca/Fe]meta.code.error;phys.abundchar[Ca/Fe]? Log Ca/Fe abundancelog(Sun)phys.abundfloatnullablee_[Ca/Fe]? Error on log Ca/Fe abundancelog(Sun)stat.error;phys.abundfloatnullableo_[Ca/Fe]Number of lines for log Ca/Fe abundancemeta.numberintl_[Ce/Fe]Upper limit flag on [Ce/Fe]meta.code.error;phys.abundchar[Ce/Fe]? Log Ce/Fe abundancelog(Sun)phys.abundfloatnullablee_[Ce/Fe]? Error on log Ce/Fe abundancelog(Sun)stat.error;phys.abundfloatnullableo_[Ce/Fe]Number of lines for log Ce/Fe abundancemeta.numberintl_[Nd/Fe]Upper limit flag on [Nd/Fe]meta.code.error;phys.abundchar[Nd/Fe]? Log Nd/Fe abundancelog(Sun)phys.abundfloatnullablee_[Nd/Fe]? Error on log Nd/Fe abundancelog(Sun)stat.error;phys.abundfloatnullableo_[Nd/Fe]Number of lines for log Nd/Fe abundancemeta.numberintSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from 2MASS name (right ascension part)degpos.eq.ra;meta.main_DEPositions from 2MASS name (declination part)degpos.eq.dec;meta.main