First dredge-up occurs as a star ascends the red-giant branch. Its deepening convective envelope exposes material processed by hydrogen burning, especially enhanced helium and nitrogen and depleted carbon.

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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