J/ApJ/722/1373ivo://CDS.VizieR/J/ApJ/722/1373doi:10.26093/cds/vizier.17221373CDSJohnson C.I.Pilachowski C.A.2017-07-11T13:09:26Z2012-08-09T11:20:12ZCDS support team

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

cds-question@unistra.frchemical-abundancesline-intensitiesgiant-starsglobular-star-clustersWe present elemental abundances for 855 red giant branch (RGB) stars in the globular cluster Omega Centauri ({omega} Cen) from spectra obtained with the Blanco 4m telescope and Hydra multifiber spectrograph. The sample includes nearly all RGB stars brighter than V=13.5 and spans {omega} Cen's full metallicity range. The heavy {alpha} elements (Si, Ca, and Ti) are generally enhanced by +/-0.3 dex and exhibit a metallicity-dependent morphology that may be attributed to mass and metallicity-dependent Type II supernova (SN) yields. The heavy {alpha} and Fe-peak abundances suggest minimal contributions from Type Ia SNe. The light elements (O, Na, and Al) exhibit >0.5 dex abundance dispersions at all metallicities, and a majority of stars with [Fe/H]>-1.6 have [O/Fe], [Na/Fe], and [Al/Fe] abundances similar to those in monometallic globular clusters, as well as O-Na, O-Al anticorrelations and the Na-Al correlation in all but the most metal-rich stars. A combination of pollution from intermediate-mass asymptotic giant branch stars and in situ mixing may explain the light element abundance patterns. A large fraction (27%) of {omega} Cen stars are O-poor ([O/Fe]<0) and are preferentially located within 5'-10' of the cluster center. The O-poor giants are spatially similar, located in the same metallicity range, and are present in nearly equal proportions to blue main-sequence stars. This suggests that the O-poor giants and blue main-sequence stars may share a common origin. [La/Fe] increases sharply at [Fe/H]>~-1.6, and the [La/Eu] ratios indicate that the increase is due to almost pure s-process production.2010ApJ...722.1373Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/722/1373CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/534/A53 : EW of 18 subgiant of {omega} Cen (Pancino+, 2011)J/A+A/527/A18 : EW of 6 subgiants of {omega} Cen (Pancino+, 2011)J/A+A/519/L3 : Lithium content of {omega} Cen (Monaco+, 2010)J/ApJ/698/2048 : Abundances of red giants in {omega} Cen (Johnson+, 2009)J/MNRAS/399/195 : Blue and red spectra of {omega} Cen (Van Loon+, 2009)J/ApJ/681/1505 : Abundances of red giants in {omega} Cen (Johnson+, 2008)J/ApJ/667/911 : Abundances of {omega} Cen (Stanford+, 2007)J/ApJ/640/L43 : Metallicities of RR Lyrae stars in Omega Cen (Sollima+, 2006)J/ApJ/647/1075 : Age-metallicity relation of {omega} Cen (Stanford+, 2006)J/AJ/119/1824 : Caby photometry of {Omega} Centauri (Rey+, 2000)J/A+A/360/472 : Proper motions in omega Centauri (van Leeuwen+, 2000)J/ApJ/462/241 : Ca abundance for Omega Cen red giants (Norris+ 1996)J/ApJS/99/637 : Equivalent widths for 54 red giants (Norris+ 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/722/1373https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/722/1373http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/722/1373https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/722/1373https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/722/1373http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/722/1373GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/722/1373/stars (Star parameters, chemical abundances and uncertainties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/722/1373/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/722/1373/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/722/1373/stars?GETtext/xml+votable180.050000true201.6021428-47.15314140.0055555555555555566/43225 432271.1166583743361574e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/722/1373?format=asciiOpticaldefaultJ/ApJ/722/1373/starsStar parameters, chemical abundances and uncertaintiesu_[Ni/Fe]Uncertainty flag on [Ni/Fe]meta.code.error;phys.abundcharTeffEffective temperatureKphys.temperature.effectiveintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLEIDVan Leeuwen et al. identifier (G1) (1)meta.id;meta.mainintprimaryROA? Woolley (1966ROAn....2....1W) identifier (<NGC 5139 NNNN> in Simbad)meta.idintnullableVmagThe V band magnitudemagphot.mag;em.opt.VfloatB-VThe (B-V) color indexmagphot.color;em.opt.B;em.opt.VfloatJmag2MASS J band magnitudemagphot.mag;em.IR.JfloatHmag2MASS H band magnitudemagphot.mag;em.IR.HfloatKmag2MASS K_S_ band magnitudemagphot.mag;em.IR.Kfloatlog(g)Log of the surface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H]Average [Fe/H] metallicitylog(Sun)phys.abund.Z;stat.meanfloatVtMicroturbulence velocitykm/sphys.veloc.microTurbfloatl_S/N-6250Limit flag on S/N-6250meta.code.errorcharS/N-6250Signal-to-noise at 6250 Angstromsstat.snrintS/N-6650? Signal-to-noise at 6650 Angstromsstat.snrintnullable[FeI/H]The [FeI/H] number abundancelog(Sun)meta.idfloat[FeII/H]? The [FeII/H] number abundancelog(Sun)meta.idfloatnullable[O/Fe]? The [O/Fe] number abundancelog(Sun)meta.idfloatnullable[Na/Fe]? The [Na/Fe] number abundancelog(Sun)meta.idfloatnullable[Al/Fe]? The [Al/Fe] number abundancelog(Sun)meta.idfloatnullable[Si/Fe]? The [Si/Fe] number abundancelog(Sun)meta.idfloatnullable[Ca/Fe]? The [Ca/Fe] number abundancelog(Sun)meta.idfloatnullable[ScI/Fe]? The [ScI/Fe] number abundancelog(Sun)meta.idfloatnullable[ScII/Fe]? The [ScII/Fe] number abundancelog(Sun)meta.idfloatnullable[Sc/Fe]? Averaged [Sc/Fe] number abundancelog(Sun)meta.idfloatnullable[Ti/Fe]? The [Ti/Fe] number abundancelog(Sun)meta.idfloatnullable[Ni/Fe]? The [Ni/Fe] number abundancelog(Sun)meta.idfloatnullable[LaII/Fe]? The [LaII/Fe] number abundancelog(Sun)meta.idfloatnullable[EuII/Fe]? The [EuII/Fe] number abundancelog(Sun)meta.idfloatnullableCodeAbundance code (2)meta.codecharvL00Link to data from van Leeuwen et al., 2000, Cat. J/A+A/360/472meta.ref.urlchar2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.refcharNFeINumber of FeI lines measuredmeta.numberintsigFeIThe FeI {sigma}/N-FeI^1/2^ valuestat.errorfloatNFeII? Number of FeII lines measuredmeta.numberintnullablesigFeII? The FeII {sigma}/N-FeI^1/2^ valuestat.errorfloatnullableNNa? Number of Na lines measuredmeta.numberintnullablesigNa? The Na {sigma}/N-Na^1/2^ valuestat.errorfloatnullableNAl? Number of Al lines measuredmeta.numberintnullablesigAl? The Al {sigma}/N-Al^1/2^ valuestat.errorfloatnullableNSi? Number of Si lines measuredmeta.numberintnullablesigSi? The Si {sigma}/N-Si^1/2^ valuestat.errorfloatnullableNCa? Number of Ca lines measuredmeta.numberintnullablesigCa? The Ca {sigma}/N-FeI^1/2^ valuestat.errorfloatnullableNScI? Number of ScI lines measuredmeta.numberintnullablesigScI? The ScI {sigma}/N-FeI^1/2^ valuestat.errorfloatnullableNScII? Number of Sc IIlines measuredmeta.numberintnullablesigScII? The ScII {sigma}/N-FeI^1/2^ valuestat.errorfloatnullableNTi? Number of Tilines measuredmeta.numberintnullablesigTi? The Ti {sigma}/N-FeI^1/2^ valuestat.errorfloatnullableNNi? Number of Ni lines measuredmeta.numberintnullablesigNi? The Ni {sigma}/N-FeI^1/2^ valuestat.errorfloatnullable_RAPositions from van Leeuwen et al., 2000, Cat. J/A+A/360/472 (right ascension part)degpos.eq.ra;meta.main_DEPositions from van Leeuwen et al., 2000, Cat. J/A+A/360/472 (declination part)degpos.eq.dec;meta.mainJ/ApJ/722/1373/ionWavelengths explanations for tables 3 to 4bIonIon identificationphys.atmol.ionStagecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength (in Angstroms)0.1nmem.wlfloatEPExcitation potentialeVphys.atmol.excitationfloatlog(gf)Log of the oscillator strengthphys.atmol.oscStrengthfloatepsAbundance of element in Sun [{epsilon}_Sun_ = log(Ion/H)+12]phys.abundfloatJ/ApJ/722/1373/ewCombined table from original tablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLEIDVan Leeuwen et al. identifier (G1)meta.id;meta.mainintprimaryW6151.62? Equivalent width of Fe I 6151.62 (m{AA})1e-13mspect.line.eqWidthintnullableW6157.73? Equivalent width of Fe I 6157.73 (m{AA})1e-13mspect.line.eqWidthintnullableW6165.36? Equivalent width of Fe I 6165.36 (m{AA})1e-13mspect.line.eqWidthintnullableW6173.34? Equivalent width of Fe I 6173.34 (m{AA})1e-13mspect.line.eqWidthintnullableW6180.20? Equivalent width of Fe I 6180.20 (m{AA})1e-13mspect.line.eqWidthintnullableW6187.99? Equivalent width of Fe I 6187.99 (m{AA})1e-13mspect.line.eqWidthintnullableW6200.32? Equivalent width of Fe I 6200.32 (m{AA})1e-13mspect.line.eqWidthintnullableW6219.28? Equivalent width of Fe I 6219.28 (m{AA})1e-13mspect.line.eqWidthintnullableW6226.74? Equivalent width of Fe I 6226.74 (m{AA})1e-13mspect.line.eqWidthintnullableW6229.23? Equivalent width of Fe I 6229.23 (m{AA})1e-13mspect.line.eqWidthintnullableW6232.64? Equivalent width of Fe I 6232.64 (m{AA})1e-13mspect.line.eqWidthintnullableW6246.32? Equivalent width of Fe I 6246.32 (m{AA})1e-13mspect.line.eqWidthintnullableW6252.56? Equivalent width of Fe I 6252.56 (m{AA})1e-13mspect.line.eqWidthintnullableW6265.14? Equivalent width of Fe I 6265.14 (m{AA})1e-13mspect.line.eqWidthintnullableW6270.23? Equivalent width of Fe I 6270.23 (m{AA})1e-13mspect.line.eqWidthintnullableW6271.28? Equivalent width of Fe I 6271.28 (m{AA})1e-13mspect.line.eqWidthintnullableW6290.97? Equivalent width of Fe I 6290.97 (m{AA})1e-13mspect.line.eqWidthintnullableW6297.79? Equivalent width of Fe I 6297.79 (m{AA})1e-13mspect.line.eqWidthintnullableW6301.50? Equivalent width of Fe I 6301.50 (m{AA})1e-13mspect.line.eqWidthintnullableW6302.49? Equivalent width of Fe I 6302.49 (m{AA})1e-13mspect.line.eqWidthintnullableW6311.50? Equivalent width of Fe I 6311.50 (m{AA})1e-13mspect.line.eqWidthintnullableW6315.81? Equivalent width of Fe I 6315.81 (m{AA})1e-13mspect.line.eqWidthintnullableW6322.69? Equivalent width of Fe I 6322.69 (m{AA})1e-13mspect.line.eqWidthintnullableW6335.33? Equivalent width of Fe I 6335.33 (m{AA})1e-13mspect.line.eqWidthintnullableW6336.83? Equivalent width of Fe I 6336.83 (m{AA})1e-13mspect.line.eqWidthintnullableW6344.15? Equivalent width of Fe I 6344.15 (m{AA})1e-13mspect.line.eqWidthintnullableW6149.24? Equivalent width of Fe II 6149.24 (m{AA})1e-13mspect.line.eqWidthintnullableW6247.56? Equivalent width of Fe II 6247.56 (m{AA})1e-13mspect.line.eqWidthintnullableW6300.31[syn] determined via spectrum synthesis instead of equivalent width measurementsspect.line.eqWidthcharW6154.23? Equivalent width of Na I 6154.23 (m{AA})1e-13mspect.line.eqWidthintnullableW6160.75? Equivalent width of Na I 6160.75 (m{AA})1e-13mspect.line.eqWidthintnullableW6696.03[syn] determined via spectrum synthesis instead of equivalent width measurementsspect.line.eqWidthcharW6698.67[syn] determined via spectrum synthesis instead of equivalent width measurementsspect.line.eqWidthcharW6155.13? Equivalent width of Si I 6155.13 (m{AA})1e-13mspect.line.eqWidthintnullableW6237.32? Equivalent width of Si I 6237.32 (m{AA})1e-13mspect.line.eqWidthintnullableW6161.29? Equivalent width of Ca I 6161.29 (m{AA})1e-13mspect.line.eqWidthintnullableW6162.18? Equivalent width of Ca I 6162.18 (m{AA})1e-13mspect.line.eqWidthintnullableW6166.44? Equivalent width of Ca I 6166.44 (m{AA})1e-13mspect.line.eqWidthintnullableW6169.04? Equivalent width of Ca I 6169.04 (m{AA})1e-13mspect.line.eqWidthintnullableW6169.56? Equivalent width of Ca I 6169.56 (m{AA})1e-13mspect.line.eqWidthintnullableW6210.67? Equivalent width of Sc I 6210.67 (m{AA})1e-13mspect.line.eqWidthintnullableW6305.66? Equivalent width of Sc I 6305.66 (m{AA})1e-13mspect.line.eqWidthintnullableW6245.62? Equivalent width of Sc II 6245.62 (m{AA})1e-13mspect.line.eqWidthintnullableW6309.88? Equivalent width of Sc II 6309.88 (m{AA})1e-13mspect.line.eqWidthintnullableW6146.23? Equivalent width of Ti I 6146.23 (m{AA})1e-13mspect.line.eqWidthintnullableW6258.11? Equivalent width of Ti I 6258.11 (m{AA})1e-13mspect.line.eqWidthintnullableW6261.10? Equivalent width of Ti I 6261.10 (m{AA})1e-13mspect.line.eqWidthintnullableW6303.76? Equivalent width of Ti I 6303.76 (m{AA})1e-13mspect.line.eqWidthintnullableW6312.24? Equivalent width of Ti I 6312.24 (m{AA})1e-13mspect.line.eqWidthintnullableW6336.11? Equivalent width of Ti I 6336.11 (m{AA})1e-13mspect.line.eqWidthintnullableW6175.37? Equivalent width of Ni I 6175.37 (m{AA})1e-13mspect.line.eqWidthintnullableW6176.81? Equivalent width of Ni I 6176.81 (m{AA})1e-13mspect.line.eqWidthintnullableW6177.25? Equivalent width of Ni I 6177.25 (m{AA})1e-13mspect.line.eqWidthintnullableW6186.71? Equivalent width of Ni I 6186.71 (m{AA})1e-13mspect.line.eqWidthintnullableW6327.60? Equivalent width of Ni I 6327.60 (m{AA})1e-13mspect.line.eqWidthintnullableW6262.29[syn] determined via spectrum synthesis instead of equivalent width measurementsspect.line.eqWidthcharW6645.06? Equivalent width of Eu II 6645.06 (m{AA})1e-13mspect.line.eqWidthintnullable