The story of the star Sanduleak -69o 202
t = - 45 x 103 yr
The helium is exhausted in the star's core.
- The C and O core shrinks and becomes hotter.
- He and H continue to burn in shells.
- Possibly some of the atmosphere is ejected.
Davison E. Soper, Institute of Theoretical Science,
University of Oregon, Eugene OR 97403 USA
soper@bovine.uoregon.edu