When binaries keep track of recent nucleosynthesis - The Zr–Nb pair in extrinsic stars as an s-process diagnostic

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Fig. 7.

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Same as Fig. 6, but for HD 28159. Our analysis reveals that this object, initially classified as a normal giant (K5III), is slightly s-process enriched. The agreement with the predictions for a 2 M_⊙ (red line) and 3 M_⊙ (blue line) model with the diffusive mixing scheme is not satisfactory.

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