What fusion cycle dominates in stars significantly more massive than the Sun, utilizing carbon, nitrogen, and oxygen as intermediaries?

Answer

The carbon–nitrogen–oxygen (CNO) cycle

For stars exceeding about 1.3 times the Sun's mass, the core temperature is high enough for the carbon–nitrogen–oxygen (CNO) cycle to take over, using those elements as catalytic intermediaries.

What fusion cycle dominates in stars significantly more massive than the Sun, utilizing carbon, nitrogen, and oxygen as intermediaries?

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