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Fig. 1


Left panel: HBB-FST predictions of the Li abundance versus time from the beginning of the AGB (in Myr). The horizontal lines represent the observed values of logε(Li) = 2.0, 3.5, and 4.3. Right panel: HBB-MLT Li, Rb, Zr, and Tc predictions for a 5 M model with a delayed superwind. We note that the Tc abundance is an upper limit because the trend of the half-life of 99Tc − decreasing with temperature from terrestrial 0.22 Myr to ~3 yr at the peak temperature of ~350 MK − is not included in the model (though we do not expect large differences, see Mathews et al. 1986).

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