Second dredge-up occurs after core helium exhaustion in sufficiently massive intermediate-mass stars. The convective envelope moves inward, mixes helium- and hydrogen-burning products to the surface, and reduces the hydrogen-exhausted core mass.

Ancestors (8)

  1. Stellar dredge-up
  2. Asymptotic giant branch
  3. Stellar evolution
  4. Stellar astrophysics
  5. Astrophysics
  6. Branch of physics
  7. Physics
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