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Fig. 8


Diagram of [C/Fe] versus [Fe/H] for several classes of chemically peculiar binary stars. Barium giants (red open squares); CH stars (blue open polygons); subgiant CH stars (red plus sign); and the Feh-Duf star (filled black circle). We also show the CEMP-s stars (red filled circles), the CEMP-no stars (green triangles) and the CEMP-low-s stars (Masseron et al. 2010) (blue filled squares).

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