J/MNRAS/440/1095ivo://CDS.VizieR/J/MNRAS/440/1095doi:10.26093/cds/vizier.74401095CDSKarinkuzhi D.Goswami A.2024-08-08T20:12:58Z2016-07-15T12:18:44ZCDS support team

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

cds-question@unistra.frcarbon-starslate-type-starschemical-abundancesradial-velocityResults from high-resolution spectral analyses of a selected sample of CH stars are presented. Detailed chemical composition studies of these objects, which could reveal abundance patterns that in turn provide information regarding nucleosynthesis and evolutionary status, are scarce in the literature. We conducted detailed chemical composition studies for these objects based on high-resolution (R~42000) spectra. The spectra were taken from the ELODIE archive and cover the wavelength range from 3900 to 6800{AA}. We estimated the stellar atmospheric parameters, the effective temperature T_eff_, the surface gravity logg, and the metallicity [Fe/H] from local thermodynamic equilibrium analyses using model atmospheres. Estimated temperatures of these objects cover a wide range, from 4550 to 6030K. The surface gravity ranges from 1.8 to 3.8, and the metallicity from -0.18 to -1.4. We report updates on elemental abundances for several heavy elements and present estimates of abundance ratios for Sr, Y, Zr, Ba, La, Ce, Pr, Nd, Sm, Eu and Dy with respect to Fe. For the object HD 188650 we present the first abundance analysis results based on a high-resolution spectrum. Enhancements of heavy elements relative to Fe, which are characteristic of CH stars, are evident from our analyses for most of the objects. A parametric model-based study was performed to understand the relative contributions from the s- and r-processes to the abundances of the heavy elements.2014MNRAS.440.1095Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/440/1095CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/81 : Taxonomy of Barium Stars (Lu, 1991)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/440/1095https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/440/1095http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/440/1095https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/440/1095https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/440/1095http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/440/1095GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/440/1095/table1 (Basic data for the program stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/440/1095/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/440/1095/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/440/1095/table1?GETtext/xml+votable180.050000true11.557290833-11.4523797220.0055555555555555566/3026 4041 4506 13087 13534 14721 16892 20110 24003 259047.952274030004205e-20 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/440/1095?format=asciiOpticaldefaultJ/MNRAS/440/1095/table1Basic data for the program starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAllDisplay all parameters for this starmeta.ref.urlcharNameStar namemeta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainBmagB magnitudemagphot.mag;em.opt.BfloatVmagV magnitudemagphot.mag;em.opt.VfloatJmag? J magnitudemagphot.mag;em.IR.JfloatnullableHmag? H magnitudemagphot.mag;em.IR.HfloatnullableKmag? K magnitudemagphot.mag;em.IR.KfloatnullableFedisplay the abundance for Fe linesmeta.ref.urlcharEWldisplay the equivalent widths of light elementsmeta.ref.urlcharEWhdisplay the equivalent widths of heavy elementsmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/440/1095/table2Radial velocities for the program starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharRVOur estimate radial velocitykm/sphys.veloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloatRVlLiterature radial velocitykm/sspect.dopplerVelocfloatr_RVlReference for RVl (1)meta.ref;pos.frameintJ/MNRAS/440/1095/table3Temperatures of the program stars from photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharTeffJK? Effective temperature from J-KKphys.temperature.effectivefloatnullableTeffJH1? Effective temperature from J-H, [Fe/H]=-0.5Kphys.temperature.effectivefloatnullableTeffVK1? Effective temperature from V-K, [Fe/H]=-0.5Kphys.temperature.effectivefloatnullableTeffJH2? Effective temperature from J-H, [Fe/H]=-1.0Kphys.temperature.effectivefloatnullableTeffVK2? Effective temperature from V-K, [Fe/H]=-1.0Kphys.temperature.effectivefloatnullableTeffBV1Effective temperature from B-V, [Fe/H]=-0.5Kphys.temperature.effectivefloatTeffBV2Effective temperature from B-V, [Fe/H]=-1.0Kphys.temperature.effectivefloatTeffspSpectroscopic estimate of effective temperatureKphys.temperature.effectiveintJ/MNRAS/440/1095/table4Fe lines used for deriving atmospheric parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength0.1nmem.wldoubleElElement (FeI or FeII)phys.atmol.elementcharElowLower level energyeVphys.energy;phys.atmol.levelfloatloggfOscillator strengthphys.atmol.oscStrengthfloatAbund1? HD 4395 abundancephys.abundfloatnullableAbund2? HD 5395 abundancephys.abundfloatnullableAbund3? HD 16458 abundancephys.abundfloatnullableAbund4? HD 48565 abundancephys.abundfloatnullableAbund5? HD 81192 abundancephys.abundfloatnullableAbund6? HD 125079 abundancephys.abundfloatnullableAbund7? HD 188650 abundancephys.abundfloatnullableAbund8? HD 201626 abundancephys.abundfloatnullableAbund9? HD 214714 abundancephys.abundfloatnullableAbund10? HD 216219 abundancephys.abundfloatnullableJ/MNRAS/440/1095/table5Derived atmospheric parameters for the program starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharTeffEffective temperatureKphys.temperature.effectiveintloggGravity surfacelog(cm.s**-2)phys.gravityfloatvturbMicroturbulent velocitykm/sphys.velocfloat[FeI/H]Abundance [FeI/H]phys.abundfloat[FeII/H]Abundance [FeII/H]phys.abundfloatJ/MNRAS/440/1095/table6Elemental abundances for the program stars[CaI/Fe]Abundance [CaI/Fe]phys.abundfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[SC] Type (G1)src.classcharn_Type[*] *: Objects are also included in the Ba star catalogue of Lu (1991, Cat. V/81)meta.notecharNameStar namemeta.id;meta.mainchar[NaI/Fe]Abundance [NaI/Fe]phys.abundfloat[MgI/Fe]Abundance [MgI/Fe]phys.abundfloat[ScII/Fe]Abundance [ScII/Fe]phys.abundfloat[TiI/Fe]Abundance [TiI/Fe]phys.abundfloat[TiII/Fe]Abundance [TiII/Fe]phys.abundfloat[VI/Fe]? Abundance [VI/Fe]phys.abundfloatnullable[CrI/Fe]Abundance [CrI/Fe]phys.abundfloat[CrII/Fe]? Abundance [CrII/Fe]phys.abundfloatnullable[MnI/Fe]? Abundance [MnI/Fe]phys.abundfloatnullable[CoI/Fe]Abundance [CoI/Fe]phys.abundfloat[NiI/Fe]Abundance [NiI/Fe]phys.abundfloat[ZnI/Fe]Abundance [ZnI/Fe]phys.abundfloat[SrI/Fe]? Abundance [SrI/Fe]phys.abundfloatnullable[YII/Fe]? Abundance [YII/Fe]phys.abundfloatnullable[ZrII/Fe]? Abundance [ZrII/Fe]phys.abundfloatnullable[BaII/Fe]? Abundance [BaII/Fe]phys.abundfloatnullable[LaII/Fe]? Abundance [LaII/Fe]phys.abundfloatnullable[CeII/Fe]Abundance [CeII/Fe]phys.abundfloat[PrII/Fe]? Abundance [PrII/Fe]phys.abundfloatnullable[NdII/Fe]Abundance [NdII/Fe]phys.abundfloat[SmII/Fe]? Abundance [SmII/Fe]phys.abundfloatnullable[EuII/Fe]? Abundance [EuII/Fe]phys.abundfloatnullable[DyII/Fe]? Abundance [DyII/Fe]phys.abundfloatnullableJ/MNRAS/440/1095/table7Observed values for [Fe/H], [ls/Fe], [hs/Fe] and [hs/ls] for the program starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.mainchar[Fe/H]Abundance [Fe/H]phys.abund.Fefloat[ls/Fe]? Abundance [ls/Fe]phys.abundfloatnullable[hs/Fe]? Abundance [hs/Fe]phys.abundfloatnullable[hs/ls]? Abundance [hs/ls]phys.abundfloatnullableRefReference for abundances (1)meta.ref;pos.frameintJ/MNRAS/440/1095/table8Equivalent widths of lines used for the calculation of light element abundances for the program starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength0.1nmem.wldoubleElElement (FeI or FeII)phys.atmol.elementcharElowLower level energyeVphys.energy;phys.atmol.levelfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEW1? HD 4395 equivalent width0.1nmspect.line.eqWidthfloatnullableEW2? HD 5395 equivalent width0.1nmspect.line.eqWidthfloatnullableEW3? HD 16458 equivalent width0.1nmspect.line.eqWidthfloatnullableEW4? HD 48565 equivalent width0.1nmspect.line.eqWidthfloatnullableEW5? HD 81192 equivalent width0.1nmspect.line.eqWidthfloatnullableEW6? HD 125079 equivalent width0.1nmspect.line.eqWidthfloatnullableEW7? HD 188650 equivalent width0.1nmspect.line.eqWidthfloatnullableEW8? HD 201626 equivalent width0.1nmspect.line.eqWidthfloatnullableEW9? HD 214714 equivalent width0.1nmspect.line.eqWidthfloatnullableEW10? HD 216219 equivalent width0.1nmspect.line.eqWidthfloatnullableJ/MNRAS/440/1095/table9Equivalent widths of lines used for the calculation of heavy element abundances for the program starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength0.1nmem.wldoubleElElement (FeI or FeII)phys.atmol.elementcharElowLower level energyeVphys.energy;phys.atmol.levelfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEW1? HD 4395 equivalent width0.1nmspect.line.eqWidthfloatnullableEW2? HD 5395 equivalent width0.1nmspect.line.eqWidthfloatnullableEW3? HD 16458 equivalent width0.1nmspect.line.eqWidthfloatnullableEW4? HD 48565 equivalent width0.1nmspect.line.eqWidthfloatnullableEW5? HD 81192 equivalent width0.1nmspect.line.eqWidthfloatnullableEW6? HD 125079 equivalent width0.1nmspect.line.eqWidthfloatnullableEW7? HD 188650 equivalent width0.1nmspect.line.eqWidthfloatnullableEW8? HD 201626 equivalent width0.1nmspect.line.eqWidthfloatnullableEW9? HD 214714 equivalent width0.1nmspect.line.eqWidthfloatnullableEW10? HD 216219 equivalent width0.1nmspect.line.eqWidthfloatnullableJ/MNRAS/440/1095/table10Atmospheric parameters from the literaturerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharVmagV magnitudemagphot.mag;em.opt.VfloatTeff? Effective temperatureKphys.temperature.effectiveintnullablelogg? Surface gravitylog(cm.s**-2)phys.gravityfloatnullable[Fe/H]Abundance [Fe/H]phys.abund.FefloatRefReferences (1)meta.refintJ/MNRAS/440/1095/table11Elemental abundances from the literaturerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[CS] Type (G1)src.classcharNameStar namemeta.id;meta.mainchar[SrI/Fe]? Abundance [SrI/Fe]phys.abundfloatnullable[YII/Fe]? Abundance [YII/Fe]phys.abundfloatnullable[ZrII/Fe]? Abundance [ZrII/Fe]phys.abundfloatnullable[BaII/Fe]? Abundance [BaII/Fe]phys.abundfloatnullable[LaII/Fe]? Abundance [LaII/Fe]phys.abundfloatnullable[CeII/Fe]? Abundance [CeII/Fe]phys.abundfloatnullable[PrII/Fe]? Abundance [PrII/Fe]phys.abundfloatnullable[NdII/Fe]? Abundance [NdII/Fe]phys.abundfloatnullable[SmII/Fe]? Abundance [SmII/Fe]phys.abundfloatnullable[EuII/Fe]? Abundance [EuII/Fe]phys.abundfloatnullable[DyII/Fe]? Abundance [DyII/Fe]phys.abundfloatnullableRefReferences (1)meta.refint