planetary nebula nucleus
English
[edit]Etymology
[edit]From planetary nebula + nucleus.
Noun
[edit]planetary nebula nucleus (plural planetary nebula nuclei)
- (astronomy) The remnant hot luminous core of the stellar progenitor of the planetary nebula, which ionizes the surrounding planetary nebula.
Synonyms
[edit]- PNN (abbreviation)
Derived terms
[edit]- PNN (abbreviation)