Evolution and nucleosynthesis of asymptotic giant branch stars in three Magellanic Cloud clusters
We present stellar evolutionary sequences for asymptotic giant branch (AGB) stars in the Magellanic Cloud clusters NGC1978, NGC1846, and NGC419. The new stellar models for the three clusters match the observed effective temperatures on the giant branches, the oxygen-rich to carbon-rich transition luminosities, and the AGB-tip luminosities. A major finding is that a large amount of convective overshoot (up to 3 pressure scale heights) is required at the base of the convective envelope during...[Show more]
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|Source:||Astrophysical Journal, The|
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