J/A+A/665/A10ivo://CDS.VizieR/J/A+A/665/A10doi:10.26093/cds/vizier.36650010CDSLombardo L.Bonifacio P.Francois P.Hansen C.J.Caffau E.Hanke M.,Skuladottir A.Arcones A.Eichler M.Reichert M.Psaltis A.,Koch Hansen A.J.Sbordone L.2022-11-13T17:28:27Z2022-08-31T07:14:00ZCDS support team

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

cds-question@unistra.frgiant-starschemical-abundancesvisible-astronomyThe Chemical Evolution of R-process Elements in Stars (CERES) project aims at providing a homogeneous analysis of a sample of metal poor stars ([Fe/H]<-1.5). We present the stellar parameters and the chemical abundances of elements up to Zr for a sample of 52 giant stars. We relied on a sample of high signal-to-noise UVES spectra. We determined stellar parameters from Gaia photometry and parallaxes. Chemical abundances were derived using spectrum synthesis and model atmospheres. We determined chemical abundances of 26 species of 18 elements: Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Y, and Zr. For several stars, we could measure both neutral and ionised species including Si, Sc, Mn and Zr. We have roughly doubled the number of measurements of Cu for stars at [Fe/H]<=2.5. The homogeneity of the sample made it possible to highlight the presence of two Zn rich stars ([Zn/Fe]~+0.7), one r-rich and the other r-poor. We report the existence of two branches in the [Zn/Fe] vs. [Ni/Fe] plane and suggest that the high [Zn/Fe] branch is the result of hypernova nucleosynthesis. We discovered two stars with peculiar light neutron capture abundance patterns: CES1237+1922 (also known as BS 16085-0050), which is ~1 dex underabundant in Sr, Y, and Zr with respect to the other stars in the sample, and CES2250-4057 (also known as HE 2247-4113), which shows a ~1 dex overabundance of Sr with respect to Y and Zr. The high quality of our dataset allowed us to measure hardly detectable ions. This can provide guidance in the development of line formation computations that take into account deviations from local thermodynamic equilibrium and hydrodynamical effects.2022A&A...665A..10Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/665/A10CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/665/A10https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/665/A10http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/665/A10https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/665/A10https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/665/A10http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/665/A10GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/665/A10/stars (stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A10/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A10/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A10/stars?GETtext/xml+votable180.050000true7.8204583-16.79466670.0055555555555555566/51 16569 16821 16893 17578 17642 21087 21089 21719 22564 22576 22600 23428 24858 25639 26242 26347 26457 27763 27767 28054 31427 31451 31757 32468 33470-33471 34246 34593 34595 35395 35551 36135 36365 36407 36788 37109 37144 37290 37644 41118 44208 44575 44771 45694 45797 45825 46155 46490 46506 46512 46902https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/665/A10?format=asciiOpticaldefaultJ/A+A/665/A10/starsstarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharNameStar namemeta.idcharStarStellar name (CESHHMM+DDMM)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainJ/A+A/665/A10/table3Abundancesf_CrIFlag on CrI (1)meta.codecharA(FeI)FeI abundance from FeI linesphys.abundfloats(FeI)Line-to-line scatter for FeI linesstat.errorfloat[FeI/H]FeI abundance relative to the Sunphys.abundfloato_FeIINumber of FeII lines usedmeta.numberintA(FeII)FeII abundance from FeI linesphys.abundfloats(FeII)Line-to-line scatter for FeII linesstat.errorfloat[FeII/H]FeII abundance relative to the Sunphys.abundfloatf_FeIIFlag on FeII (1)meta.codecharo_NaI? Number of NaI lines usedmeta.numberintnullableA(NaI)LTE? NaI LTE abundance from NaI linesphys.abundfloatnullables(NaI)LTE? Line-to-line scatter for NaI linesphys.abundfloatnullable[NaI/H]LTE? NaI LTE abundance relative to the Sunphys.abundfloatnullable[NaI/FeI]LTE? NaI LTE over FeI abundance ratiophys.abundfloatnullableA(NaI)NLTE? NaI NLTE abundance from NaI linesphys.abundfloatnullables(NaI)NLTE? line-to-line scatter for NaI linesphys.abundfloatnullable[NaI/H]NLTE? NaI NLTE abundance relative to the Sunphys.abundfloatnullable[NaI/FeI]NLTE? NaI NLTE over FeI abundance ratiophys.abundfloatnullablef_NaIFlag on NaI (1)meta.codecharo_MgINumber of MgI lines usedmeta.numberintA(MgI)MgI abundance from MgI linesphys.abundfloats(MgI)Line-to-line scatter for MgI linesstat.errorfloat[MgI/H]MgI abundance relative to the Sunphys.abundfloat[MgI/FeI]MgI over FeI abundance ratiophys.abundfloatf_MgIFlag on MgI (1)meta.codecharo_AlI? Number of AlI lines usedmeta.numberintnullableA(AlI)LTE? AlI LTE abundance from AlI linesphys.abundfloatnullables(AlI)LTE? Line-to-line scatter for AlI linesphys.abundfloatnullable[AlI/H]LTE? AlI LTE abundance relative to the Sunphys.abundfloatnullable[AlI/FeI]LTE? AlI LTE over FeI abundance ratiophys.abundfloatnullable[AlI/H]NLTE? AlI NLTE abundance relative to the Sunphys.abundfloatnullable[AlI/FeI]NLTE? AlI NLTE over FeI abundance ratiophys.abundfloatnullablef_AlIFlag on AlI (1)meta.codecharo_SiI? Number of SiI lines usedmeta.numberintnullableA(SiI)? SiI abundance from SiI linesphys.abundfloatnullables(SiI)? Line-to-line scatter for SiI linesstat.errorfloatnullable[SiI/H]? SiI abundance relative to the Sunphys.abundfloatnullable[SiI/FeI]? SiI over FeI abundance ratiophys.abundfloatnullablef_SiIFlag on SiI (1)meta.codecharo_SiII? Number of SiII lines usedmeta.numberintnullableA(SiII)? SiII abundance from SiII linesphys.abundfloatnullables(SiII)? Line-to-line scatter for SiII linesstat.errorfloatnullable[SiII/H]? SiII abundance relative to the Sunphys.abundfloatnullable[SiII/FeII]? SiII over FeII abundance ratiophys.abundfloatnullablef_SiIIFlag on SiII (1)meta.codecharo_CaI? Number of CaI lines usedmeta.numberintnullableA(CaI)? CaI abundance from CaI linesphys.abundfloatnullables(CaI)? Line-to-line scatter for CaI linesstat.errorfloatnullable[CaI/H]? CaI abundance relative to the Sunphys.abundfloatnullable[CaI/FeI]? CaI over FeI abundance ratiophys.abundfloatnullableo_ScI? Number of ScI lines usedmeta.numberintnullableA(ScI)? ScI abundance from ScI linesphys.abundfloatnullables(ScI)? Line-to-line scatter for ScI linesstat.errorfloatnullable[ScI/H]? ScI abundance relative to the Sunphys.abundfloatnullable[ScI/FeI]? ScI over FeI abundance ratiophys.abundfloatnullablef_ScIFlag on ScI (1)meta.codecharo_ScII? Number of ScII lines usedmeta.numberintnullableA(ScII)? ScII abundance from ScII linesphys.abundfloatnullables(ScII)? Line-to-line scatter for ScII linesstat.errorfloatnullable[ScII/H]? ScII abundance relative to the Sunphys.abundfloatnullable[ScII/FeII]? ScII over FeII abundance ratiophys.abundfloatnullableo_TiINumber of TiI lines usedmeta.numberintA(VII)VII abundance from VII linesphys.abundfloats(VII)Line-to-line scatter for VII linesstat.errorfloat[VII/H]VII abundance relative to the Sunphys.abundfloat[VII/FeII]VII over FeII abundance ratiophys.abundfloatf_VIIFlag on VII (1)meta.codecharo_CrI? Number of CrI lines usedmeta.numberintnullableA(CrI)? CrI abundance from CrI linesphys.abundfloatnullables(CrI)? Line-to-line scatter for CrI linesstat.errorfloatnullable[CrI/H]? CrI abundance relative to the Sunphys.abundfloatnullable[CrI/FeI]? CrI over FeI abundance ratiophys.abundfloatnullableo_CrII? Number of CrII lines usedmeta.numberintnullableA(CrII)? CrII abundance from CrII linesphys.abundfloatnullables(CrII)? Line-to-line scatter for CrII linesstat.errorfloatnullable[CrII/H]? CrII abundance relative to the Sunphys.abundfloatnullable[CrII/FeII]? CrII over FeII abundance ratiophys.abundfloatnullablef_CrIIFlag on CrII (1)meta.codecharo_MnI? Number of MnI lines usedmeta.numberintnullableA(MnI)? MnI abundance from MnI linesphys.abundfloatnullables(MnI)? Line-to-line scatter for MnI linesstat.errorfloatnullable[MnI/H]? MnI abundance relative to the Sunphys.abundfloatnullable[MnI/FeI]? MnI over FeI abundance ratiophys.abundfloatnullablef_MnIFlag on MnI (1)meta.codecharo_MnII? Number of MnII lines usedmeta.numberintnullableA(MnII)? MnII abundance from MnII linesphys.abundfloatnullables(MnII)? Line-to-line scatter for MnII linesstat.errorfloatnullable[MnII/H]? MnII abundance relative to the Sunphys.abundfloatnullable[MnII/FeII]? MnII over FeII abundance ratiophys.abundfloatnullablef_MnIIFlag on MnII (1)meta.codecharo_CoINumber of CoI lines usedmeta.numberintA(CoI)CoI abundance from CoI linesphys.abundfloats(CoI)Line-to-line scatter for CoI linesstat.errorfloat[CoI/H]CoI abundance relative to the Sunphys.abundfloat[CoI/FeI]CoI over FeI abundance ratiophys.abundfloatf_CoIFlag on CoI (1)meta.codecharo_NiINumber of NiI lines usedmeta.numberintA(NiI)NiI abundance from NiI linesphys.abundfloats(NiI)Line-to-line scatter for NiI linesstat.errorfloat[NiI/H]NiI abundance relative to the Sunphys.abundfloat[NiI/FeI]NiI over FeI abundance ratiophys.abundfloatf_NiIFlag on NiI (1)meta.codecharo_CuI? Number of CuI lines usedmeta.numberintnullableA(CuI)? CuI abundance from CuI linesphys.abundfloatnullables(CuI)? Line-to-line scatter for CuI linesstat.errorfloatnullable[CuI/H]? CuI abundance relative to the Sunphys.abundfloatnullable[CuI/FeI]? CuI over FeI abundance ratiophys.abundfloatnullablef_CuIFlag on CuI (1)meta.codecharo_ZnI? Number of ZnI lines usedmeta.numberintnullableA(ZnI)? ZnI abundance from ZnI linesphys.abundfloatnullables(ZnI)? Line-to-line scatter for ZnI linesstat.errorfloatnullable[ZnI/H]? ZnI abundance relative to the Sunphys.abundfloatnullable[ZnI/FeI]? ZnI over FeI abundance ratiophys.abundfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStellar name (CESHHMM+DDMM)meta.id;meta.maincharo_FeINumber of FeI lines usedmeta.numberintA(TiI)TiI abundance from TiI linesphys.abundfloats(TiI)Line-to-line scatter for TiI linesstat.errorfloat[TiI/H]TiI abundance relative to the Sunphys.abundfloat[TiI/FeI]TiI over FeI abundance ratiophys.abundfloato_TiIINumber of TiII lines usedmeta.numberintA(TiII)TiII abundance from TiII linesphys.abundfloats(TiII)Line-to-line scatter for TiII linesstat.errorfloat[TiII/H]TiII abundance relative to the Sunphys.abundfloat[TiII/FeII]TiII over FeII abundance ratiophys.abundfloato_VI? Number of VI lines usedmeta.numberintnullableA(VI)? VI abundance from VI linesphys.abundfloatnullables(VI)? Line-to-line scatter for VI linesstat.errorfloatnullable[VI/H]? VI abundance relative to the Sunphys.abundfloatnullable[VI/FeI]? VI over FeI abundance ratiophys.abundfloatnullablef_VIFlag on VI (1)meta.codecharo_VIINumber of VII lines usedmeta.numberintf_ZnIFlag on ZnI (1)meta.codecharo_SrII? Number of SrII lines usedmeta.numberintnullableA(SrII)? SrII abundance from SrII linesphys.abundfloatnullables(SrII)? Line-to-line scatter for SrII linesstat.errorfloatnullable[SrII/H]? SrII abundance relative to the Sunphys.abundfloatnullable[SrII/FeII]? SrII over FeII abundance ratiophys.abundfloatnullablef_SrIIFlag on SrII (1)meta.codecharo_YIINumber of YII lines usedmeta.numberintA(YII)YII abundance from YII linesphys.abundfloats(YII)Line-to-line scatter for YII linesstat.errorfloat[YII/H]YII abundance relative to the Sunphys.abundfloat[YII/FeII]YII over FeII abundance ratiophys.abundfloato_ZrI? Number of ZrI lines usedmeta.numberintnullableA(ZrI)? ZrI abundance from ZrI linesphys.abundfloatnullables(ZrI)? Line-to-line scatter for ZrI linesstat.errorfloatnullable[ZrI/H]? ZrI abundance relative to the Sunphys.abundfloatnullable[ZrI/FeI]? ZrI over FeI abundance ratiophys.abundfloatnullablef_ZrIFlag on ZrI (1)meta.codecharo_ZrII? Number of ZrII lines usedmeta.numberintnullableA(ZrII)? ZrII abundance from ZrII linesphys.abundfloatnullables(ZrII)? Line-to-line scatter for ZrII linesstat.errorfloatnullable[ZrII/H]? ZrII abundance relative to the Sunphys.abundfloatnullable[ZrII/FeII]? ZrII over FeII abundance ratiophys.abundfloatnullablef_ZrIIFlag on ZrII (1)meta.codechar