J/A+A/683/A72ivo://CDS.VizieR/J/A+A/683/A72doi:10.26093/cds/vizier.36830072CDSCaffau E.Katz D.Gomez A.Bonifacio P.Lallement R.Sartoretti P.,Sbordone L.Spite M.Mucciarelli A.Ibata R.Chemin L.Thevenin F.,Panuzzo P.Leclerc N.Francois P.Ludwig H.-G.Monaco L.Haywood M.,Soubiran C.2025-01-31T20:00:59Z2024-03-08T12:23:11ZCDS support team

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

cds-question@unistra.frmilky-way-galaxylate-type-starschemical-abundancesThe Gaia satellite has already provided the astronomical community with three data releases, and the Radial Velocity Spectrometer (RVS) on board Gaia has provided the radial velocity for 33 million stars. When deriving the radial velocity from the RVS spectra, several stars are measured to have large values. To verify the credibility of these measurements, we selected some bright stars with the modulus of radial velocity in excess of 500km/s to be observed with SOPHIE at OHP and UVES at VLT. This paper is devoted to investigating the chemical composition of the stars observed with UVES. We derived atmospheric parameters using Gaia photometry and parallaxes, and we performed a chemical analysis using the MyGIsFOS code. We find that the sample consists of metal-poor stars, although none have extremely low metallicities. The abundance patterns match what has been found in other samples of metal-poor stars selected irrespective of their radial velocities. We highlight the presence of three stars with low Cu and Zn abundances that are likely descendants of pair-instability supernovae. Two stars are apparently younger than 1 Ga, and their masses exceed twice the turn-off mass of metal-poor populations. This makes it unlikely that they are blue stragglers because it would imply they formed from triple or multiple systems. We suggest instead that they are young metal-poor stars accreted from a dwarf galaxy. Finally, we find that the star RVS721 is associated with the Gjoll stream, which itself is associated with the Globular Cluster NGC 3201.2024A&A...683A..72Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/683/A72CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/651/A20 : Gaia RVS benchmark stars. I. (Caffau+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/683/A72https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/683/A72http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/683/A72https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/683/A72https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/683/A72http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/683/A72GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/683/A72/rvs (Abundances of the stellar sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/683/A72/rvs?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/683/A72/rvs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/683/A72/rvs?GETtext/xml+votable180.050000true126.2681567-6.69630440.0055555555555555566/12446 12518 12591 12609 12612 12713 12816 13335 19109 19169 19409 20118 21776 25189 25386 25476 27216 28763 28795 29039 29844 29898 29980 30496 31508 32205 32454 32582 32957 38124 38586 39190 40174 41237 41254 41259 41523 41638 42152 43360 43367 43690 45605https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/683/A72?format=asciidefaultJ/A+A/683/A72/rvsAbundances of the stellar sampleZr1Fe? [ZrI/Fe] abundancephys.abundfloatnullables_Sc1Line-to-line scatter of ScIstat.errorfloatSc1Fe? [ScI/Fe] abundancephys.abundfloatnullableNSc1[0/2] Number of ScI linesmeta.numberintSc2? [ScII/H]=A(ScII)-A(Sc)sun with A(Sc)sun=3.10phys.abundfloatnullables_Sc2Line-to-line scatter of ScIIstat.errorfloatSc2Fe? [ScII/Fe] abundancephys.abundfloatnullableNSc2[0/4] Number of ScII linesmeta.numberintTi1? [TiI/H]=A(TiI)-A(Ti)sun with A(Ti)sun=4.90phys.abundfloatnullables_Ti1Line-to-line scatter of TiIstat.errorfloatTi1Fe? [TiI/Fe] abundancephys.abundfloatnullableNTi1[0/48] Number of TiI linesmeta.numberintTi2? [TiII/H]=A(TiII)-A(Ti)sun with A(Ti)sun=4.90phys.abundfloatnullables_Ti2Line-to-line scatter of TiIIstat.errorfloatTi2Fe? [TiII/Fe] abundancephys.abundfloatnullableNTi2[1/33] Number of TiII linesmeta.numberintV1? [VI/H]=A(VI)-A(V)sun with A(V)sun=4.00phys.abundfloatnullables_V1Line-to-line scatter of VIstat.errorfloatV1Fe? [VI/Fe] abundancephys.abundfloatnullableNV1[0/19] Number of VI linesmeta.numberintV2? [VII/H]=A(VII)-A(Vc)sun with A(V)sun=4.00phys.abundfloatnullables_V2Line-to-line scatter of VIIstat.errorfloatV2Fe? [V/Fe] abundancephys.abundfloatnullableNV2[0/5] Number of VII linesmeta.numberintCr1? [CrI/H]=A(CrI)-A(Cr)sun with A(Cr)sun=5.64phys.abundfloatnullables_Cr1Line-to-line scatter of CrIstat.errorfloatCr1Fe? [CrI/Fe] abundancephys.abundfloatnullableNCr1[1/18] Number of CrI linesmeta.numberintCr2? [CrII/H]=A(CrII)-A(Cr)sun with A(Cr)sun=5.64phys.abundfloatnullables_Cr2Line-to-line scatter of CrIIstat.errorfloatCr2Fe? [CrII/Fe] abundancephys.abundfloatnullableNCr2[0/4] Number of CrII linesmeta.numberintMn1nlte3d? [MnI/H]=A(MnI)-A(Mn)sun with A(Mn)sun=5.37phys.abundfloatnullables_Mn1nlte3dLine-to-line scatter of MnIstat.errorfloatMn1nlte3dFe? [Mn/Fe] abundancephys.abundfloatnullableNMn1nlte3d[0/14] Number of MnI linesmeta.numberints_Mn2Line-to-line scatter of MnIIstat.errorfloatMn2Fe? [MnII/Fe] abundancephys.abundfloatnullableNMn2[0/1] Number of MnII linesmeta.numberintFe1? [FeI/H]=A(FeI)-A(Fe)sun with A(Fe)sun=8.52phys.abundfloatnullables_Fe1Line-to-line scatter of FeIstat.errorfloatFe1Fe[0/0] [FeI/Fe] abundancephys.abundfloatNFe1[9/263] Number of FeI linesmeta.numberintFe2? FeII/H]=A(FeII)-A(Fe)sun with A(Fe)sun=8.52phys.abundfloatnullables_Fe2Line-to-line scatter of FeIIstat.errorfloatFe2Fe? [FeII/Fe] abundancephys.abundfloatnullableNFe2[0/24] Number of FeII linesmeta.numberintCo1? [CoI/H]=A(CoI)-A(Co)sun with A(Fe)sun=4.92phys.abundfloatnullables_Co1Line-to-line scatter of CoIstat.errorfloatCo1Fe? [CoI/Fe] abundancephys.abundfloatnullableNCo1[0/15] Number of CoI linesmeta.numberintNi1? [NiI/H]=A(NiI)-A(Ni)sun with A(Ni)sun=6.23phys.abundfloatnullables_Ni1Line-to-line scatter of NiIstat.errorfloatNi1Fe? [NiI/Fe] abundancephys.abundfloatnullableNNi1[0/45] Number of NiI linesmeta.numberintCu1? [CuI/H]=A(CuI)-A(Cu)sun with A(Cu)sun=4.21phys.abundfloatnullables_Cu1Line-to-line scatter of CuIstat.errorfloatCu1Fe? [CuI/Fe] abundancephys.abundfloatnullableNCu1[0/2] Number of CuI linesmeta.numberintZn1nlte? [ZnI/H]=A(ZnI)-A(Zn)sun with A(Zn)sun=4.62phys.abundfloatnullables_Zn1nlteLine-to-line scatter of ZnIstat.errorfloatZn1nlteFe? [ZnI/Fe] abundancephys.abundfloatnullableNZn1nlte[0/2] Number of ZnI linesmeta.numberintcorNLTEZn1NLTE correction for ZnIarith.factorfloatSr1? [SrI/H]=A(SrI)-A(Sr)sun with A(Sr)sun=2.92phys.abundfloatnullables_Sr1Line-to-line scatter of SrIstat.errorfloatSr1Fe? [SrI/Fe] abundancephys.abundfloatnullableNSr1[0/1] Number of SrI linesmeta.numberintY2? [YII/H]=A(YII)-A(Y)sun with A(Y)sun=2.21phys.abundfloatnullables_Y2Line-to-line scatter of YIIstat.errorfloatY2Fe? [YII/Fe] abundancephys.abundfloatnullableNY2[0/10] Number of YII linesmeta.numberintZr1? [ZrI/H]=A(ZrI)-A(Zr)sun with A(Zr)sun=2.62phys.abundfloatnullables_Zr1Line-to-line scatter of ZrIIstat.errorfloatNZr1[0/10] Number of ZrI linesmeta.numberintZr2? [ZrII/H]=A(ZrII)-A(Zr)sun with A(Zr)sun=2.62phys.abundfloatnullables_Zr2Line-to-line scatter of ZrIIstat.errorfloatZr2Fe? [ZrII//Fe] abundancephys.abundfloatnullableNZr2[0/10] Number of ZrII linesmeta.numberintBa2fit? [BaII/H]=A(BaII)-A(Ba)sun with A(Ba)sun=2.17phys.abundfloatnullables_Ba2fitLine-to-line scatter of BaIIstat.errorfloatBa2fitFe? [BaII/Fe] abundancephys.abundfloatnullableNBa2fit[0/2] Number of BaII linesmeta.numberintEu2fit? [EuII/H]=A(EuII)-A(Eu)sun with A(Eu)sun=0.52phys.abundfloatnullables_Eu2fitLine-to-line scatter of EuIIstat.errorfloatEu2fitFe? [EuII/Fe] abundancephys.abundfloatnullableNEu2fit[0/3] Number of EuII linesmeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3GaiaDR3 source_idmeta.ids_Si1Line-to-line scatter of SiIstat.errorfloatMn2? [MnII/H]=A(MnII)-A(Mn)sun with A(Mn)sun=5.37phys.abundfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from Gaia DR3 (right ascension part)degpos.eq.ra;meta.mainTeffEffective temperatureKphys.temperature.effectivefloatloggSurface gravitylog(cm.s**-2)phys.gravityfloatmicroMicroturbulencekm/sphys.veloc.microTurbfloat[Fe/H]Metallicityphys.abund.ZfloatC1fit? [C/H]=A(C)-A(C)sun derived from fit of the Gband, with A(C)sun=8.50phys.abundfloatnullables_C1fitUncertainty in the C abundancestat.error;phys.abundfloatC1fitFe? [CI/Fe] abundancephys.abundfloatnullableNC1fit[0/1] Number of C linesmeta.numberintO1fit? [O/H]=A(O)-A(O)sun derived from fit of the Gband, with A(O)sun=8.76phys.abundfloatnullables_O1fitLine-to-line scatter of Ostat.errorfloatO1fitFe? [OI/Fe] abundancephys.abundfloatnullableNO1fit[0/2] Number of OI linesmeta.numberintNa1nlte? [Na/H]=A(Na)-A(Na)sun with A(Na)sun=6.30phys.abundfloatnullables_Na1nlteLine-to-line scatter of Nastat.errorfloatNa1nlteFe? [NaI/Fe] abundancephys.abundfloatnullableNNa1nlte[0/2] Number of NaI linesmeta.numberintcorNLTENa1NLTE correction for NaIarith.factorfloatMg1? [Mg/H]=A(Mg)-A(Mg)sun with A(Mg)sun=7.54phys.abundfloatnullables_Mg1Line-to-line scatter of MgIstat.errorfloatMg1Fe? [MgI/Fe] abundancephys.abundfloatnullableNMg1[0/12] Number of MgI linesmeta.numberintAl1? [Al/H]=A(Al)-A(Al)sun with A(Al)sun=6.47phys.abundfloatnullables_Al1Line-to-line scatter of AlIstat.errorfloatAl1Fe? [AlI/Fe] abundancephys.abundfloatnullableNAl1[0/6] Number of AlI linesmeta.numberintSi1? [Si/H]=A(Si)-A(Si)sun with A(Si)sun=7.52phys.abundfloatnullableSi1Fe? [SiI/Fe] abundancephys.abundfloatnullableNSi1[0/27] Number of SiI linesmeta.numberintS1nlte? [S/H]=A(S)-A(S)sun with A(S)sun=7.16phys.abundfloatnullables_S1nlteLine-to-line scatter of SIstat.errorfloatS1nlteFe? [SI/Fe] abundancephys.abundfloatnullableNS1nlte[0/2] Number of SI linesmeta.numberintcorNLTES1NLTE correction for SIarith.factorfloatK1fit? [K/H]=A(K)-A(K)sun with A(K)sun=5.11phys.abundfloatnullables_K1fit[0/0] Line-to-line scatter of KIstat.errorfloatK1fitFe? [KI/Fe] abundancephys.abundfloatnullableNK1fit[0/1] Number of KI linesmeta.numberintCa1nlte? [Ca/H]=A(Ca)-A(Ca)sun with A(Ca)sun=6.33phys.abundfloatnullables_Ca1nlteLine-to-line scatter of CaIstat.errorfloatCa1nlteFe? [CaI/Fe] abundancephys.abundfloatnullableNCa1nlte[4/24] Number of CaI linesmeta.numberintcorNLTECa1[0.04/0.3] NLTE correction for CaIarith.factorfloatSc1? [ScI/H]=A(ScI)-A(Sc)sun with A(Sc)sun=3.10phys.abundfloatnullable_DEPositions from Gaia DR3 (declination part)degpos.eq.dec;meta.mainNameName of the star as in the paper (RVSNNN)meta.id;meta.maincharStarInternal star namemeta.idcharcorNLTEMn13dNLTE correction for MnIarith.factorcharJ/A+A/683/A72/linesList of lines usedElowLower energyeVphys.energy;phys.atmol.leveldoubleElElementphys.atmol.elementcharlambdaWavelengthnmem.wldoubleloggfOscillator strengthphys.atmol.oscStrengthfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar name (STAR_RVSNNN)meta.id;meta.mainchar