Abstract

The evolution of a 0.6 M/sub sun/ stellar model (X = 0.9, Z = 10/sup -3/) from the zero-age main sequence (ZAMS) to the asymptotic giant branch (AGB) is described. The red giant evolution has been done without artificial shifting of the hydrogen-burning shell. The core flash and a sequence of 12 subsequent shell flashes have been followed until the star reaches the horizontal branch (HB). The HB and post-HB evolution is followed through the first major shell flash on the AGB. An approximate stability criterion, suitable for both core and shell flashes, is also presented.

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