J/MNRAS/496/2902ivo://CDS.VizieR/J/MNRAS/496/2902doi:10.26093/cds/vizier.74962902CDSMolaro P.Cescutti G.Fu X.2025-02-20T20:16:01Z2023-09-28T15:29:00ZCDS support team

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

cds-question@unistra.frhalo-starsdwarf-galaxiesmetallicitychemically-peculiar-starseffective-temperaturevisible-astronomyData from Gaia DR2 and The Apache Point Observatory Galactic Evolution Experiment surveys revealed a relatively new component in the inner Galactic halo, which is likely the dynamical remnant of a disrupted dwarf galaxy named Gaia-Enceladus that collided with the Milky Way about 10Gyr ago. This merging event offers an extraordinary opportunity to study chemical abundances of elements in a dwarf galaxy, since they are generally hampered in external galaxies. Here, we focus on ^7^Li and ^9^Be in dwarf stars that are out of reach even in Local Group galaxies. Searching in GALAH, Gaia-ESO survey and in literature, we found several existing ^7^Li abundance determinations of stars belonging to the Gaia-Enceladus galaxy. The ^7^Li abundances of stars at the low metallicity end overlap with those of the Galactic halo. These are effective extragalactic ^7^Li measurements, which suggest that the ^7^Li Spite plateau is universal, as is the cosmological ^7^Li problem. We found a ^7^Li-rich giant out of 101 stars, which suggests a small percentage similar to that of the Milky Way. We also collect ^9^Be abundance for a subsample of 25 Gaia-Enceladus stars from literature. Their abundances share the Galactic [Be/H] values at the low metallicity end but grow slower with [Fe/H] and show a reduced dispersion. This suggests that the scatter observed in the Milky Way could reflect the different ^9^Be evolution patterns of different stellar components that are mixed-up in the Galactic halo.2020MNRAS.496.2902Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/496/2902CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/MNRAS/478/4513 : GALAH Survey DR2 (Buder+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/496/2902https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/496/2902http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/496/2902https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/496/2902https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/496/2902http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/496/2902GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/496/2902/table1 (Gaia-Enceladus candidate stars with Li and Be abundances measured from literature with log(g)>3.65 and T_eff_>5700K)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/496/2902/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/496/2902/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/496/2902/table1?GETtext/xml+votable180.050000true201.0617797-46.39486080.005555555555555556Cone search capability for table J/MNRAS/496/2902/galah (Enceladus Candidates from the GALAH survey with Li determinations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/496/2902/galah?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/496/2902/galah?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/496/2902/galah?GETtext/xml+votable180.050000true317.49573614.14681220.0055555555555555566/118 208 232 436 893 4184 5195 5413 5622 6159 6186 6747 7798 9162 10359 12307 12456 12621 16199 17245 18887 19063 19247 19276 19347 20542 20565-20566 20646 20680 21003 21087 21234 22416 22418 22420 22557 22729 23359 25219 25891 26284 27277 27330 30042 30359 30533 30876 31094 31116 31139 31424 31748 31892 32952 32971 32981 33012 33292 33350 33388 33407 33433 33436 33471 33508 33577 33831 33929 34254 34683 36474 36813 36840 36971 37129 37137 37251 38184 38260 38293 38334 38382 38509 38784 38795 38868 38986 39446 39692 39843 39911 40279 40299 40312 40333 40567 40705 40708 40859 40877 41080 41150 41259 41262 41327 41336 41345 42252 42259 42649 42652 42735 43127 43249 43306 43309 43666 43916 44021 44045 44542 44922 45141 45147 45183 45330 45336 45340 45360 45411 45418 45470 45489 45500 45504 45549 45905 45976 46031 46053 46066 46096 46152 46625 46630 46651 46758 47111 47246 47459 47484 47501 47538 47568 47590 47734 47814 48245 48583 48736 48968https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/496/2902?format=asciiOpticaldefaultJ/MNRAS/496/2902/table1Gaia-Enceladus candidate stars with Li and Be abundances measured from literature with log(g)>3.65 and T_eff_>5700KMoreLink to Table 2meta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharGaiaDR2Gaia DR2 source identifiermeta.id;meta.mainprimaryNameStar namemeta.idcharTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H]Fe/H abundance ratiophys.abund.Fe;arith.ratiofloat[O/H]? O/H abundance ratio (1)phys.abundfloatnullableA(Li)? Lithium abundancephys.abundfloatnullable[Fe/H]Be? Fe/H abundance ratio from the reference with Beryllium abundance measurementsphys.abund.Fe;arith.ratiofloatnullablee_[Fe/H]Be? Error on [Fe/H]Bestat.error;phys.abund.FefloatnullableA(Be)? Beryllium abundancephys.abundfloatnullablee_A(Be)? Error on A (Be)stat.errorfloatnullableRefReferences (2)meta.refchar_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.mainJ/MNRAS/496/2902/table2Kinematical properties of the selected Gaia-Enceladus candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2Gaia DR2 source identifiermeta.id;meta.mainNameStar namemeta.idcharEnergyEnergy from Helmi et al. (2018Natur.563...85H)km**2.s**-2phys.energydoubleLzAngular momentum in the Z direction from Helmi et al. (2018Natur.563...85H)kpc.km/sphys.angMomentumdoublerapoApocentre distance (1)kpcpos.distance;pos.galactocentricfloatrperiPericentre distance (1)kpcpos.distance;pos.galactocentricfloateEccentricity (1)src.orbital.eccentricityfloatZmaxMaximum distance from the Galactic plane (1)kpcpos.cartesian.z;pos.galacticfloatJ/MNRAS/496/2902/galahEnceladus Candidates from the GALAH survey with Li determinations[Fe/H]Fe/H abundance ratiophys.abund.Fe;arith.ratiofloatSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2Gaia DR2 source identifiermeta.id;meta.mainflagcCannon flag form the GALAH survey (1)meta.codeintTeffEffective temperatureKphys.temperature.effectivefloatloggSurface gravitylog(cm.s**-2)phys.gravityfloatA(Li)Lithium abundancephys.abundfloat_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.main