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Fig. 15.


Predictions from the STAREVOL code for extrinsic stars polluted by a 2, 3, 4, or 5 M AGB star with [Fe/H]= − 0.5. The 4 M predictions are superimposed on the 5 M values, but their track stops at ([Nb/Fe], [Zr/Fe]) ∼(0.03, 0.07). For the 2 and 3 M models, diffusive mixing (DM) of protons in the 12C pocket during the interpulse is modelled, whereas for the 4 and 5 M models, the s-process is assumed to be purely convective in the pulses. Each symbol corresponds to a thermal pulse enrichment. The black line corresponds to the fit to the barium stars (black squares).

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