J/ApJ/837/176ivo://CDS.VizieR/J/ApJ/837/176doi:10.26093/cds/vizier.18370176CDSYong D.Norris J.E.Da Costa G.S.Stanford L.M.Karakas A.I.,Shingles L.J.Hirschi R.Pignatari M.2018-03-12T08:28:17Z2017-11-27T14:36:55ZCDS support team

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

cds-question@unistra.frgiant-starsmetallicityline-intensitiesglobular-star-clustersWe present a chemical abundance analysis of a metal-poor star, ROA276, in the stellar system {omega} Centauri. We confirm that this star has an unusually high [Sr/Ba] abundance ratio. Additionally, ROA 276 exhibits remarkably high abundance ratios, [X/Fe], for all elements from Cu to Mo along with normal abundance ratios for the elements from Ba to Pb. The chemical abundance pattern of ROA 276, relative to a primordial {omega} Cen star ROA 46, is best fit by a fast-rotating low-metallicity massive stellar model of 20M_{sun}_, [Fe/H]=-1.8, and an initial rotation 0.4 times the critical value; no other nucleosynthetic source can match the neutron-capture element distribution. ROA 276 arguably offers the most definitive proof to date that fast-rotating massive stars contributed to the production of heavy elements in the early universe.2017ApJ...837..176Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/837/176CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/195 : Globular Clusters in the Milky Way (Harris, 1996)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/A+A/404/187 : Equivalent widths for metal-poor stars (Gratton+, 2003)J/ApJ/645/613 : Abundances of HD 221170 (Ivans+, 2006)J/ApJS/162/227 : Transition probabilities for SmII (Lawler+, 2006)J/A+A/493/959 : UBV(RI)cHalpha photometry in omega Cen (Bellini+, 2009)J/ApJS/182/51 : Transition proba. of rare earth elements (Lawler+, 2009)J/MNRAS/403/1413 : Updated stellar yields from AGB models (Karakas, 2010)J/ApJ/742/37 : Abundances of six RGB stars in M22 (Roederer+, 2011)J/AJ/141/175 : Abundances in M15 RGB/RHB stars (Sobeck+, 2011)J/ApJ/750/76 : R-process peaks elements in HD 160617 (Roederer+, 2012)J/ApJ/797/44 : Evolution and nucleosynthesis of AGB stars (Fishlock+, 2014)J/A+A/571/A47 : Extensive linelist of CH in stellar atm. (Masseron+, 2014)J/A+A/574/A129 : The First CEMP star in the Sculptor dSph (Skuladottir+, 2015)J/ApJS/225/24 : NuGrid stellar data set I. Yields (Pignatari+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/837/176https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/837/176http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/837/176https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/837/176https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/837/176http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/837/176GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/837/176/table1 (Stellar parameters for the program stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/837/176/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/837/176/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/837/176/table1?GETtext/xml+votable180.050000true201.7115333-47.55106670.0055555555555555566/43227https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/837/176?format=asciidefaultJ/ApJ/837/176/table2Line list, equivalent widths, and abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonSpecies identifierphys.atmol.ionStagecharlambda[4057.8/7947.6]? Wavelength in Angstroms (1)0.1nmem.wlfloatnullableLEP[0/5.2]? Lower excitation potentialeVphys.atmol.excitation;stat.minfloatnullablelog(gf)[-10.3/0.7]? Log oscillator strengthphys.atmol.oscStrengthfloatnullableEW276[20/150]? Equivalent width for ROA 276 (2)1e-13mspect.line.eqWidthfloatnullablef_EW276[s] s = spectrum synthesismeta.codecharEW46[19.8/150]? Equivalent width for ROA 46 (2)1e-13mspect.line.eqWidthfloatnullablef_EW46[s] s = spectrum synthesismeta.codecharloge276[-1/8.1]? Log abundance for ROA 276phys.abundfloatnullableloge46[-1.3/7.6]? Log abundance for ROA 46phys.abundfloatnullableRef[1/21] Source code (3)meta.codeintJ/ApJ/837/176/table1Stellar parameters for the program starsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDRed giant star identifiermeta.id;meta.mainintTeff[4075/4125] Spectroscopic effective temperature (1)Kphys.temperature.effectiveintlogg[0.2/0.7] Spectroscopic surface gravity (1)log(cm.s**-2)phys.gravityfloatxi[1.7/2.4] Microturbulent velocity (1)km/sphys.velocfloat[Fe/H][-1.8/-1.3] Spectroscopic [Fe/H] abundancelog(Sun)phys.abund.FefloatTeffp[4024/4130] Photometric effective temperatureKphys.temperature.effectiveintloggp[0.3/0.8] Photometric log of surface gravitylog(cm.s**-2)phys.gravityfloatLink1Dislay the Equivalent Widths and abundances from table2meta.ref.urlchar_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