AGN type
Seyfert Galaxy
A spiral galaxy with a bright, compact active nucleus whose spectrum shows broad or narrow emission lines from gas swirling near the central black hole — a relatively low-luminosity active galactic nucleus in an otherwise normal-looking galaxy.
Highlights
- ›Active nuclei in ordinary-looking spirals
Examples & connections
Knowledge connections
- Associated withActive Galactic Nucleus
- Associated withSupermassive Black Hole
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.