Lithium and zirconium abundances in massive Galactic O-rich AGB stars

  title={Lithium and zirconium abundances in massive Galactic O-rich AGB stars},
  author={Domingo An{\'i}bal Garc{\'i}a-Hern{\'a}ndez and Pedro Garcı́a-Lario and Bertrand Plez and Arturo Manchado and Francesca D’Antona and Johan Lub and Harm Jan Habing},
  journal={Astronomy and Astrophysics},
Lithium and zirconium abundances (the latter taken as representative of s-process enrichment) are determined for a large sample of massive Galactic O-rich AGB stars, for which high-resolution optical spectroscopy has been obtained (R? 40 000{-}50 000). This was done by computing synthetic spectra based on classical hydrostatic model atmospheres for cool stars and using extensive line lists. The results are discussed in the framework of "hot bottom burning" (HBB) and nucleosynthesis models. The… 

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