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dc.contributor.authorFrischknecht, U.
dc.contributor.authorHirschi, R.
dc.contributor.authorMeynet, G.
dc.contributor.authorEkstroem, S.
dc.contributor.authorGeorgy, C.
dc.contributor.authorRauscher, T.
dc.contributor.authorWinteler, C.
dc.contributor.authorThielemann, Friedrich-Karl
dc.date.accessioned2013-07-02T14:47:02Z
dc.date.available2013-07-02T14:47:02Z
dc.date.issued2010-11
dc.identifier.citationFrischknecht , U , Hirschi , R , Meynet , G , Ekstroem , S , Georgy , C , Rauscher , T , Winteler , C & Thielemann , F-K 2010 , ' Constraints on rotational mixing from surface evolution of light elements in massive stars ' , Astronomy & Astrophysics , vol. 522 , A39 . https://doi.org/10.1051/0004-6361/201014340
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 1617793
dc.identifier.otherPURE UUID: eb254590-be64-46ca-ba8b-304414bee894
dc.identifier.otherWOS: 000284153100045
dc.identifier.otherScopus: 78049479259
dc.identifier.urihttp://hdl.handle.net/2299/11043
dc.description.abstractContext. Light elements and nitrogen surface abundances together can constrain the mixing efficiencies in massive stars on the main sequence, because moderate mixing in the surface layers leads to depletion of light elements but only later to enrichment in nitrogen. Aims. We want to test the rotational mixing prescriptions included in the Geneva stellar evolution code (GENEC) by following the evolution of surface abundances of light isotopes in massive stars. Methods. The GENEC is a 1D code containing sophisticated prescriptions for rotational mixing. We implemented an extended reaction network into this code including the light elements Li, Be, and B, which allowed us to perform calculations testing the rotation-induced mixing. Results. We followed 9, 12, and 15 M-circle dot models with rotation from the zero age main sequence up to the end of He burning. The calculations show the expected behaviour with faster depletion of light isotopes for faster rotating stars and more massive stars. Conclusions. We find that the mixing prescriptions used in the present rotating models for massive single stars can account for most of the observations; however, the uncertainties are quite large, making it hard to draw a firm conclusion on the mixing scenario.en
dc.format.extent12
dc.language.isoeng
dc.relation.ispartofAstronomy & Astrophysics
dc.subjectB-TYPE STARS
dc.subjectCHEMICAL-COMPOSITIONS
dc.subjectNITROGEN ENRICHMENT
dc.subjectMAGELLANIC CLOUDS
dc.subjectBETA-CEPHEI STAR
dc.subjectBORON ABUNDANCES
dc.subjectstars: massive
dc.subjectSTELLAR EVOLUTION
dc.subjectVLT-FLAMES SURVEY
dc.subjectstars: abundances
dc.subjectstars: rotation
dc.subjectORION ASSOCIATION
dc.subjectREACTION-RATES
dc.titleConstraints on rotational mixing from surface evolution of light elements in massive starsen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1051/0004-6361/201014340
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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