Lecture 24: AGB Stars and Massive Star Evolution
Lecture 24: AGB Stars and Massive Star Evolution
Lecture 24: AGB Stars and Massive Star Evolution
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Asymptotic Giant Branch<br />
Now the central carbon/oxgen core becomes unstable <strong>and</strong> starts<br />
to contract. There is now Helium <strong>and</strong> Hydrogen burning in shells.<br />
Helium burning<br />
Hydrogen burning<br />
The star may become a supergiant. However, pulsations <strong>and</strong> dust<br />
formation in the envelope may lead to the ejection of the envelope,<br />
leaving a white dwarf.<br />
Sunday, May 1, 2011
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