The fraction of total mass in chemical elements heavier than helium, so the hydrogen mass fraction, helium mass fraction and metal mass fraction satisfy . Despite the astronomical name, this includes elements such as carbon and oxygen that are not chemical metals.

Ancestors (8)

  1. Metallicity
  2. Stellar chemical abundance
  3. Stellar atmosphere
  4. Stellar astrophysics
  5. Astrophysics
  6. Branches of physics
  7. Physics
  8. Home

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