Unformatted text preview: hot enough in its core to
fuse Carbon into Oxygen and Neon.
fuse Stellar Evolution
Therefore is makes several trips
back and forth across the H-R
Generally these stars will lose
sufficient mass in the red giant
stage to prevent Oxygen fusion.
So the final fate of these stars is a
planetary nebula and then a white
However in these cases the white
dwarf is composed mostly of
Carbon and Oxygen.
Carbon Stellar Evolution
While crossing the H-R
diagram, some stars pass
through a region known as
the instability gap.
Stars in this region
are not stable.
Instead they pulsate in
As they pulsate their
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- Fall '11
- Stellar Evolution, 0.25M, 100 million K, 108 K, nebulosity