J/AN/346/70025ivo://CDS.VizieR/J/AN/346/70025CDSCaffau E.Katz D.Bonifacio P.Gomez A.Lallement R.Sartoretti P.,Royer F.Panuzzo P.Spite M.Francois P.Leclerc N.Sbordone L.,Thevenin F.Ludwig H.-G.Chemin L.2025-10-01T06:29:29Z2025-09-10T10:25:40ZCDS support team

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

cds-question@unistra.frmilky-way-galaxylate-type-starschemical-abundancesHigh-velocity stars are interesting targets to unveil the formation of the Milky Way. In fact they can be recently accreted from an infalling dwarf galaxies or they can be the result of a turbulent merging of galaxies. Gaia is providing the community a way to select stars for their kinematics and the radial velocity, one of the speed components, is derived from the Gaia RVS spectrum. High absolute radial velocity values are sensitive to be false positive. They are rare and as such they are more easily impacted than lower velocity stars, by contamination by very low SNR spurious measures. We here investigate a sample of 26 stars with Gaia absolute radial velocity in excess of 500km/s with spectroscopic follow-up observations with UVES. For all but one star the extreme radial velocity is confirmed and these stars are all metal-poor and, as expected, enhanced in the elements. The complete chemical inventory confirm the large star-to-star scatter for the heavy elements and their on average larger ratio over iron with respect to the Sun, in agreement with the literature.2025AN....34670025Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AN/346/70025CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/651/A20 : Gaia RVS benchmark stars. I. (Caffau+, 2021)J/A+A/683/A72 : Gaia RVS benchmark stars. II. (Caffau+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AN/346/70025https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AN/346/70025http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AN/346/70025https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AN/346/70025https://vizier.iucaa.in/viz-bin/votable?-source=J/AN/346/70025http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AN/346/70025GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AN/346/70025/table12 (Stars used in the paper (tables 1 and 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AN/346/70025/table12?https://vizier.iucaa.in/viz-bin/conesearch/J/AN/346/70025/table12?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AN/346/70025/table12?GETtext/xml+votable180.050000true81.3487917-37.26515560.0055555555555555566/20758 21079 26845 29623 30105 30173 34258 37080 37840 38073 38160 38177 38247 38349 38477 38583 38707 40089 40094 40237 40628 40674 41151 43157 457281.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AN/346/70025?format=asciidefaultJ/AN/346/70025/table12Stars used in the paper (tables 1 and 2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintabundindicates detailed abundances in rvs.dat filemeta.ref.urlcharNameName of the star as in the paper (RVSNNN)meta.id;meta.maincharprimaryGaiaDR3Gaia DR3 source_idmeta.idGmagGaia G magnitudemagphot.mag;em.optfloatRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainA0Reddeningmagphot.color.excessfloatRVGaia radial velocitykm/sphys.veloc;pos.heliocentricfloate_RVGaia radial velocity errorkm/sstat.errorfloatTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloatmicroMicroturbulencekm/sphys.veloc.microTurbfloat[Fe/H]Metallicity, [Fe/H]phys.abund.Zfloate_[Fe/H]? Metallicity errorstat.error;phys.abund.FefloatnullableJ/AN/346/70025/rvsDetailed abundances from UVES spectraYII? A(Y) from YII lines (1)phys.abundfloatnullablee_YII? Uncertainty of A(Y) from YII linesstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the star as in the paper (RVSNNN)meta.id;meta.maincharStarInternal star namemeta.idcharTeffEffective temperatureKphys.temperature.effectivefloatloggSurface gravitylog(cm.s**-2)phys.gravityfloatmicroMicroturbulencekm/sphys.veloc.microTurbfloat[Fe1/H]Abundance [Fe/H] from FeI linesphys.abund.FefloatOI? A(O) from OI lines (1)phys.abundfloatnullablee_OIUncertainty of A(O) from OI linesstat.errorfloato_OINumber of OI linesmeta.numberintNaIA(Na) from NaI lines (1)phys.abundfloate_NaIUncertainty of A(Na) from NaI linesstat.errorfloato_NaINumber of NaI linesmeta.numberintMgIA(Mg) from MgI lines (1)phys.abundfloate_MgIUncertainty of A(Mg) from MgI linesstat.errorfloato_MgINumber of MgI linesmeta.numberintAlI? A(Al) from AlI lines (1)phys.abundfloatnullablee_AlI? Uncertainty of A(Al) from AlI linesstat.errorfloatnullableo_AlI? Number of AlI linesmeta.numberintnullableSiIA(Si) from SiI lines (1)phys.abundfloate_SiIUncertainty of A(Si) from SiI linesstat.errorfloato_SiINumber of SiI linesmeta.numberintSiII? A(Si) from SiII lines (1)phys.abundfloatnullablee_SiII? Uncertainty of A(Si) from SiII linesstat.errorfloatnullableo_SiII? Number of SiII linesmeta.numberintnullableSIA(S) from SI lines (1)phys.abundfloate_SIUncertainty of A(S) from SI linesstat.errorfloato_SINumber of SI linesmeta.numberintKIA(K) from KI lines (1)phys.abundfloate_KIUncertainty of A(K) from KI linesstat.errorfloato_KINumber of KI linesmeta.numberintCaIA(Ca) from CaI lines (1)phys.abundfloate_CaIUncertainty of A(Ca) from CaI linesstat.errorfloato_CaINumber of CaI linesmeta.numberintCaII? A(Ca) from CaII lines (1)phys.abundfloatnullablee_CaII? Uncertainty of A(Ca) from CaII linesstat.errorfloatnullableo_CaII? Number of CaII linesmeta.numberintnullableScIA(Sc) from ScI lines (1)phys.abundfloate_ScIUncertainty of A(Sc) from ScI linesstat.errorfloato_ScINumber of ScI linesmeta.numberintScIIA(Sc) from ScII lines (1)phys.abundfloate_ScIIUncertainty of A(Sc) from ScII linesstat.errorfloato_ScIINumber of ScII linesmeta.numberintTiI? A(Ti) from TiI lines (1)phys.abundfloatnullablee_TiI? Uncertainty of A(Ti) from TiI linesstat.errorfloatnullableo_TiI? Number of TiI linesmeta.numberintnullableTiII? A(Ti) from TiII lines (1)phys.abundfloatnullablee_TiII? Uncertainty of A(Ti) from TiII linesstat.errorfloatnullableo_TiII? Number of TiII linesmeta.numberintnullableVI? A(V) from VI lines (1)phys.abundfloatnullablee_VI? Uncertainty of A(V) from VI linesstat.errorfloatnullableo_VI? Number of VI linesmeta.numberintnullableVII? A(V) from VII lines (1)phys.abundfloatnullablee_VII? Uncertainty of A(V) from VII linesstat.errorfloatnullableo_VII? Number of VII linesmeta.numberintnullableCrIA(Cr) from CrI lines (1)phys.abundfloate_CrIUncertainty of A(Cr) from CrI linesstat.errorfloato_CrINumber of CrI linesmeta.numberintCrII? A(Cr) from CrII lines (1)phys.abundfloatnullablee_CrII? Uncertainty of A(Cr) from CrII linesstat.errorfloatnullableo_CrII? Number of CrII linesmeta.numberintnullableMnI? A(Mn) from MnI lines (1)phys.abundfloatnullablee_MnI? Uncertainty of A(Mn) from MnI linesstat.errorfloatnullableo_MnI? Number of MnI linesmeta.numberintnullableMnII? A(Mn) from MnII lines (1)phys.abundfloatnullablee_MnII? Uncertainty of A(Mn) from MnII linesstat.errorfloatnullableo_MnII? Number of MnII linesmeta.numberintnullableFeIA(Fe) from FeI lines (1)phys.abundfloate_FeIUncertainty of A(Fe) from FeI linesstat.errorfloato_FeINumber of FeI linesmeta.numberintFeIIA(Fe) from FeII lines (1)phys.abundfloate_FeIIUncertainty of A(Fe) from FeII linesstat.errorfloato_FeIINumber of FeII linesmeta.numberintCoI? A(Co) from CoI lines (1)phys.abundfloatnullablee_CoI? Uncertainty of A(Co) from CoI linesstat.errorfloatnullableo_CoI? Number of CoI linesmeta.numberintnullableNiI? A(Ni) from NiI lines (1)phys.abundfloatnullablee_NiI? Uncertainty of A(Ni) from NiI linesstat.errorfloatnullableo_NiI? Number of NiI linesmeta.numberintnullableCuI? A(Cu) from CuI lines (1)phys.abundfloatnullablee_CuI? Uncertainty of A(Cu) from CuI linesstat.errorfloatnullableo_CuI? Number of CuI linesmeta.numberintnullableZnI? A(Zn) from ZnI lines (1)phys.abundfloatnullablee_ZnI? Uncertainty of A(Zn) from ZnI linesstat.errorfloatnullableo_ZnI? Number of ZnI linesmeta.numberintnullableRbI? A(Rb) from RbI lines (1)phys.abundfloatnullablee_RbI? Uncertainty of A(Rb) from RbI linesstat.errorfloatnullableo_RbI? Number of RbI linesmeta.numberintnullableSrII? A(Sr) from SrII lines (1)phys.abundfloatnullablee_SrII? Uncertainty of A(Sr) from SrII linesstat.errorfloatnullableo_SrII? Number of SrII linesmeta.numberintnullableo_YII? Number of YII linesmeta.numberintnullableZrI? A(Zr) from ZrI lines (1)phys.abundfloatnullablee_ZrI? Uncertainty of A(Zr) from ZrI linesstat.errorfloatnullableo_ZrI? Number of ZrI linesmeta.numberintnullableZrII? A(Zr) from ZrII lines (1)phys.abundfloatnullablee_ZrII? Uncertainty of A(Zr) from ZrII linesstat.errorfloatnullableo_ZrII? Number of ZrII linesmeta.numberintnullableBaII? A(Ba) from BaII lines (1)phys.abundfloatnullablee_BaII? Uncertainty of A(Ba) from BaII linesstat.errorfloatnullableo_BaII? Number of BaII linesmeta.numberintnullableLaII? A(La) from LaII lines (1)phys.abundfloatnullablee_LaII? Uncertainty of A(La) from LaII linesstat.errorfloatnullableo_LaII? Number of LaII linesmeta.numberintnullableCeII? A(Ce) from CeII lines (1)phys.abundfloatnullablee_CeII? Uncertainty of A(Ce) from CeII linesstat.errorfloatnullableo_CeII? Number of CeII linesmeta.numberintnullablePrII? A(Pr) from PrII lines (1)phys.abundfloatnullablee_PrII? Uncertainty of A(Pr) from PrII linesstat.errorfloatnullableo_PrII? Number of PrII linesmeta.numberintnullableNdII? A(Nd) from NdII lines (1)phys.abundfloatnullablee_NdII? Uncertainty of A(Nd) from NdII linesstat.errorfloatnullableo_NdII? Number of NdII linesmeta.numberintnullableSmII? A(Sm) from SmII lines (1)phys.abundfloatnullablee_SmII? Uncertainty of A(Sm) from SmII linesstat.errorfloatnullableo_SmII? Number of SmII linesmeta.numberintnullableEuII? A(Eu) from EuII lines (1)phys.abundfloatnullablee_EuII? Uncertainty of A(Eu) from EuII linesstat.errorfloatnullableo_EuII? Number of EuII linesmeta.numberintnullableTbII? A(Tb) from TbII lines (1)phys.abundfloatnullablee_TbII? Uncertainty of A(Tb) from TbII linesstat.errorfloatnullableo_TbII? Number of TbII linesmeta.numberintnullableDyII? A(Dy) from DyII lines (1)phys.abundfloatnullablee_DyII? Uncertainty of A(Dy) from DyII linesstat.errorfloatnullableo_DyII? Number of DyII linesmeta.numberintnullableOsI? A(Os) from OsI lines (1)phys.abundfloatnullablee_OsI? Uncertainty of A(Os) from OsI linesstat.errorfloatnullableo_OsI? Number of OsI linesmeta.numberintnullableJ/AN/346/70025/linesList of lines usedElElementphys.atmol.elementcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarInternal star namemeta.idcharlambdaWavelengthnmem.wldoubleloggfOscillator strengthphys.atmol.oscStrengthfloatELowLower energycm**-1phys.energy;phys.atmol.leveldouble