J/ApJ/645/613ivo://CDS.VizieR/J/ApJ/645/613doi:10.26093/cds/vizier.16450613CDSIvans I.I.Simmerer J.Sneden C.Lawler J.E.Cowan J.J.Gallino R.,Bisterzo S.2008-01-28T10:47:19Z2008-01-28T11:46:40ZCDS support team

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

cds-question@unistra.frvariable-starschemical-abundancesEmploying high-resolution spectra obtained with the near-UV-sensitive detector on the Keck I HIRES, supplemented by data obtained with the McDonald Observatory 2d-coude, we have performed a comprehensive chemical composition analysis of the bright r-process-rich metal-poor red giant star HD 221170. Analysis of 57 individual neutral and ionized species yielded abundances for a total of 46 elements and significant upper limits for an additional five. Model stellar atmosphere parameters were derived with the aid of ~200 Fe peak transitions. From more than 350 transitions of 35 neutron-capture (Z>30) species, abundances for 30 neutron-capture elements and upper limits for three others were derived. Utilizing 36 transitions of La, 16 of Eu, and seven of Th, we derive ratios of log{epsilon}(Th/La)=-0.73 ({sigma}=0.06) and log{epsilon}(Th/Eu)=-0.60 ({sigma}=0.05), values in excellent agreement with those previously derived for other r-process-rich metal-poor stars such as CS 22892-052, BD +17 3248, and HD 115444. Based on the Th/Eu chronometer, the inferred age is 11.7+/-2.8Gyr. The abundance distribution of the heavier neutron-capture elements (Z>=56) is fitted well by the predicted scaled solar system r-process abundances, as also seen in other r-process-rich stars. Unlike other r-process-rich stars, however, we find that the abundances of the lighter neutron-capture elements (37<Z<56) in HD 221170 are also in agreement with the abundances predicted for the scaled solar r-process pattern.2006ApJ...645..613Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/645/613CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/430/255 : Abundances of HD221170 (Yushchenko+, 2005)J/ApJ/617/1091 : La and Eu abundances (Simmerer+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/645/613https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/645/613http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/645/613https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/645/613https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/645/613http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/645/613GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/645/613/table6Isotopic hyperfine structure patterns: ^151^Eu and ^153^Eu (Z=63) Solar System MixrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWaveNumCenter-of-Gravity Wavenumbercm**-1phys.energy;phys.atmol.transitiondoubleWaveCenter-of-Gravity Wavelength in Angstroms0.1nmem.wldoubleFupComponent upper F or total angular momentumphys.atmol.qnfloatFlowComponent lower F or total angular momentumphys.atmol.qnfloatCWaveNumComponent offset wavenumber wrt Center-of-gravity Wavenumbercm**-1phys.energy;phys.atmol.transitiondoubleCWaveComponent offset Wavelength wrt Center-of-gravity Wavelength in Angstroms0.1nmem.wldoubleStrComponent strength (1)spect.line.strengthdoubleJ/ApJ/645/613/table1Abundances derived from individual featuresrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintElElementphys.atmol.elementcharAbdAdopted Solar Abundance for El (H=12)meta.notefloatZAtomic number of Elphys.atmol.numberintIonIonization StatephyscharWave? Wavelength in Angstroms0.1nmem.wlfloatnullablef_WaveFlag on Wavelength (1)meta.codecharExtPot? Excitation PotentialeVphys.atmol.excitationfloatnullablelog(gf)? Log of the Oscillator Strengthphys.atmol.oscStrengthfloatnullableEW? Equivalent Width in m{AA}1e-13mspect.line.eqWidthfloatnullablef_EW[syn ] EW derived from synthetic spectrum (2)meta.codecharl_log(e)Limit flag on log(e)meta.code.errorcharlog(e)? Log {epsilon} abundance (H=12)phys.abundfloatnullablel_[X/Fe]Limit flag on [X/Fe]meta.code.error;phys.abundchar[X/Fe]? [X/Fe] abundance (3)log(Sun)phys.abundfloatnullableNoteAdditional note (4)meta.notecharJ/ApJ/645/613/table2ScII(Z=21) and MnI(Z=25) linelistsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWaveWavelength in Angstroms0.1nmem.wldoubleSpeciesSpecies Identificationmeta.id;meta.maincharExtPotExcitation PotentialeVphys.atmol.excitationfloatlog(gf)Log of the Oscillator Strength (1)phys.atmol.oscStrengthfloatJ/ApJ/645/613/table4Isotopic hyperfine structure patterns: ^139^La(Z=57)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWaveNumCenter-of-Gravity Wavenumbercm**-1phys.energy;phys.atmol.transitiondoubleWaveCenter-of-Gravity Wavelength in Angstroms0.1nmem.wldoubleFupComponent upper F or total angular momentumphys.atmol.qnfloatFlowComponent lower F or total angular momentumphys.atmol.qnfloatCWaveNumComponent offset wavenumber wrt Center-of-gravity Wavenumbercm**-1phys.energy;phys.atmol.transitiondoubleCWaveComponent offset Wavelength wrt Center-of-gravity Wavelength in Angstroms0.1nmem.wldoubleStrComponent strength (1)spect.line.strengthdouble