Would a gas cloud made of HII and OIII have a higher electron temperature than a cloud just consisting of HII? I understand that electron temperature is the temperature of the electrons in a plasma, but what is the relation to metallicity and how does it work?

  • $\begingroup$ I don't understand your question. HII just means ionised hydrogen. OIII means doubly ionised oxygen. Are you asking whether you need a higher temperature to doubly ionise oxygen? $\endgroup$
    – ProfRob
    Mar 10 at 19:03


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