More lead stars

  title={More lead stars},
  author={Sophie Van Eck and Stephane Goriely and A. Jorissen and Bertrand Plez},
  journal={Astronomy and Astrophysics},
The standard model for the operation of the s-process in asymptotic giant branch (AGB) stars predicts that low-metallicity ([Fe/H] ≲ -1) AGB stars should exhibit large overabundances of Pb and Bi as compared to other s-elements. The discovery of the first three such "lead stars" (defined as stars enriched in s-elements with [Pb/hs] ≳1, hs being any of Ba. La or Ce) among CH stars has been reported in a previous paper (Van Eck et al. 2001). Five more CH stars (with [Fe/H] ranging from -1.5 to -2… 

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