J/ApJ/909/8ivo://CDS.VizieR/J/ApJ/909/8doi:10.26093/cds/vizier.19090008CDSStephan T.Davis A.M.2022-08-29T10:13:39Z2022-08-19T07:44:19ZCDS support team

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

cds-question@unistra.frmeteoriteschemical-abundancesMolybdenum isotopes measured in most individual presolar silicon carbide grains are dominated by s-process contributions from the helium intershells of asymptotic giant branch (AGB) stars. The much smaller isotopic variations in molybdenum in meteorites and their components are largely controlled by s-process enrichments or depletions relative to terrestrial composition but lie along two parallel s-process mixing lines separated by what has been suggested to be an r-process contribution. The two mixing lines are populated by carbonaceous-chondrite- and noncarbonaceous-chondrite-related meteorites (CC and NC groups, respectively). We have compared molybdenum isotopic data for presolar grains with those from meteorites and renormalized the meteorite data in a way that is consistent with s-, r-, and p-process contributions observed in presolar SiC grains. The results indicate that (1) there seems to be a fixed ratio between p- and r-process contributions in all data, (2) the dichotomy in molybdenum isotopes between the CC and NC groups can be explained by variations in the isotope makeup of the s-process contribution to the meteoritic samples, (3) this variability is similar to the variations in s-process molybdenum from different AGB stars deduced from presolar grain analyses, and (4) the larger range of isotopic compositions found in refractory inclusions is also consistent with s-process isotope variability.2021ApJ...909....8Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/909/8CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/MNRAS/418/284 : s-process in low-metallicity stars. II. (Bisterzo+, 2011)J/ApJ/743/L23 : ^48^Ca heterogeneity in differentiated meteorites (Chen+, 2011)J/ApJ/758/45 : Isotopic Sr abundances in meteorites (Moynier+, 2012)J/ApJ/758/59 : Nickel isotopes in meteorites (Steele+, 2012)J/ApJ/787/10 : Solar s-process contributions with GCE model (Bisterzo+, 2014)J/ApJ/854/18 : Nucleosynthesis of p nuclides (Travaglio+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/909/8https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/909/8http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/909/8https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/909/8https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/909/8http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/909/8GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/909/8/tablea1Meteorite molybdenum isotope data renormalized to {epsilon}^98^Mo_96_/{epsilon}^92^Mo_96_=0.256recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroup[1/3] Meteorite group (1)meta.code.classintSubgroupSubgroupmeta.notecharTypeType (2)src.classcharSampleMeteorite/Sample (2)src.samplechareps92Mo96[-52.03/19.98] Molybdenum-92 isotopic dataphys.abundfloate_eps92Mo96[0.02/2.1] 1{sigma} uncertainty in eps92Mo96stat.errorfloateps94Mo96[-50.92/18.92] Molybdenum-94 isotopic dataphys.abundfloate_eps94Mo96[0.02/1.9] 1{sigma} uncertainty in eps94Mo96stat.errorfloateps95Mo96[-31.47/12.66] Molybdenum-95 isotopic dataphys.abundfloate_eps95Mo96[0.01/1.1] 1{sigma} uncertainty in eps95Mo96stat.errorfloateps97Mo96[-27.43/10.35] Molybdenum-97 isotopic dataphys.abundfloate_eps97Mo96[0/0.7] 1{sigma} uncertainty in eps97Mo96stat.errorfloateps98Mo96[-13.3/5.11] Molybdenum-98 isotopic dataphys.abundfloate_eps98Mo96[0/0.5] 1{sigma} uncertainty in eps98Mo96stat.errorfloateps100Mo96[-51.73/19.8] Molybdenum-100 isotopic dataphys.abundfloate_eps100Mo96[0.01/2.2] 1{sigma} uncertainty in eps100Mo96stat.errorfloatRefReference (3)meta.ref;pos.framecharNotesNotes (4)meta.notechar