J/A+A/587/A6ivo://CDS.VizieR/J/A+A/587/A6doi:10.26093/cds/vizier.35870006CDSDe Smedt K.Van Winckel H.Kamath D.Siess L.Goriely S.,Karakas A.I.Manick R.2023-05-26T15:11:06Z2016-02-11T08:57:03ZCDS support team

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

cds-question@unistra.frgiant-starschemical-abundancesspectroscopyThis paper is part of a larger project in which we systematically study the chemical abundances of Galactic and extragalactic post-asymptotic giant branch (post-AGB) stars. The goal at large is to provide improved observational constraints to the models of the complex interplay between the AGB s-process nucleosynthesis and the associated mixing processes. Aims. Lead (Pb) is the final product of the s-process nucleosynthesis and is predicted to have large overabundances with respect to other s-process elements in AGB stars of low metallicities. However, Pb abundance studies of s-process enriched post-AGB stars in the Magellanic Clouds show a discrepancy between observed and predicted Pb abundances. The determined upper limits based on spectral studies are much lower than what is predicted. In this paper, we focus specifically on the Pb abundance of 14 Galactic s-process enhanced post-AGB stars to check whether the same discrepancy is present in the Galaxy as well. Among these 14 objects, two were not yet subject to a detailed abundance study in the literature. We apply the same method to obtain accurate abundances for the 12 others. Our homogeneous abundance results provide the input of detailed spectral synthesis computations in the spectral regions where Pb lines are located. We used high-resolution UVES and HERMES spectra for detailed spectral abundance studies of our sample of Galactic post-AGB stars. None of the sample stars display clear Pb lines, and we only deduced upper limits of the Pb abundance by using spectrum synthesis in the spectral ranges of the strongest Pb lines.2016A&A...587A...6Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/587/A6CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/469/799 : Torun catalog of post-AGB & related objects (Szczerba+ 2007)J/MNRAS/447/1673 : Galactic post-AGB stars distances (Vickers+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/587/A6https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/587/A6http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/587/A6https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/587/A6https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/587/A6http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/587/A6GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/587/A6/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/587/A6/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/587/A6/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/587/A6/stars?GETtext/xml+votable180.050000true78.532333313.84119440.0055555555555555566/13917 14256 22069 22392 22425 23695 24079 29579 39188 39223 41566 41967 43130 48822https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/587/A6?format=asciidefaultJ/A+A/587/A6/starsList of studied starsspmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIRAS namemeta.id;meta.maincharRAJ2000Simbad Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Simbad Declination (J2000.0)pos.eq.dec;meta.mainBmag? Simbad B band magnitudemagphot.mag;em.opt.BfloatnullableVmag? Simbad V band magnitudemagphot.mag;em.opt.VfloatnullableSpTypeSimbad MK spectral typesrc.spTypecharFileNameName of the table with spectroscopymeta.id;meta.tablecharFileName2Name of the second table with spectroscopy for IRAS 08143-4406meta.id;meta.tablecharFileName3Name of fits UVES blue (437nm setting) or HERMES spectrum file in subdirectory fits (1)meta.id;meta.fitscharFileName4Name of fits UVES redl (580nm setting) spectrum file in subdirectory fits (1)meta.id;meta.fitscharFileName5Name of fits UVES redu (580nm setting) spectrum file in subdirectory fits (1)meta.id;meta.fitscharFileName6Name of fits UVES redl (860nm setting) spectrum file in subdirectory fits (1)meta.id;meta.fitscharFileName7Name of fits UVES redu (860nm setting) spectrum file in subdirectory fits (1)meta.id;meta.fitscharJ/A+A/587/A6/i05113Linelist of IRAS 05113+1347recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i05341Linelist of IRAS 05341+0852loggfOscillator strengthphys.atmol.oscStrengthfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i06530Linelist of IRAS 06530-0213recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i07134Linelist of IRAS 07134+1005recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i07430Linelist of IRAS 07430+1115recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i08143bLinelist of IRAS 08143-4406 part IrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i08143rLinelist of IRAS 08143-4406 part IIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i08281Linelist of IRAS 08281-4850recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i13245Linelist of IRAS 13245-5036recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i14325Linelist of IRAS 14325-6428recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i14429Linelist of IRAS 14429-4539recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i17279Linelist of IRAS 17279-1119recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i19500Linelist of IRAS 19500-1709recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatJ/A+A/587/A6/i22223Linelist of IRAS 22223+4327IonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ/A+A/587/A6/i22272Linelist of IRAS 22272+5435recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIdentification: Mass number+0.1*ionisation stagephys.atmol.ionStagefloatlambdaWavelength in rest frame ({AA})0.1nmem.wldoublechiExcitation potential {chi}eVphys.atmol.excitationfloatloggfOscillator strengthphys.atmol.oscStrengthfloatEWEquivalenth width (m{AA})0.1pmspect.line.widthfloat