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* CNO Cycle - (Astronomy): Definition |
 | | During the CNO cycle, carbon, nitrogen, and oxygen catalyze the nuclear reaction, so the total number of carbon, nitrogen, and oxygen nuclei remains the same. |
 | | CNO cycle/process -- a reaction involving carbon, nitrogen, and oxygen (C, N, and O) that fuses hydrogen into helium and releases energy. |
 | | With no elements to engage in the CNO cycle on the ``main sequence", core fusion proceeded by the p-p chain, driving the core temperature to ~108 K to balance the pressure of the large masses (Tumlinson & Shull 2000 ApJLett 528, L54; Tumlinson,... |
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