active galaxy
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English[edit]
Noun[edit]
active galaxy (plural active galaxies)
- (astronomy) A galaxy where a significant fraction of the energy output is not emitted by the normal components of a galaxy.
- (by restriction) A galaxy with an active nucleus (AGN, active galactic nucleus)
Usage notes[edit]
This term frequently is used to refer to galaxies containing AGNs, but is not always used as such; with the wider more general meaning also seeing appreciable use.
Hypernyms[edit]
Hyponyms[edit]
See also[edit]
Further reading[edit]
- active galaxy on Wikipedia.Wikipedia