Definition of Seyfert galaxy in English:

Seyfert galaxy


  • A galaxy of a type characterized by a bright compact core that shows strong infrared emission.

    • ‘Another impressive observation is that many of these close associations occur along lines, sometimes on either side of a special galaxy, such as a Seyfert galaxy.’
    • ‘Examples of groups consisting of a bright galaxy plus Seyfert galaxies and quasars in lines suggest a hierarchy of paired ejections; some of these are particularly impressive and are analysed to yield ejection velocities.’
    • ‘The lines tend to be broader, indicating more rapid motions, if Seyfert galaxies are viewed nearly face-on.’
    • ‘Look here for a disturbing prediction that our Milky Way will evolve into a Seyfert galaxy.’
    star system, solar system, constellation, cluster, nebula
    View synonyms


Named after Carl K. Seyfert (1911–60), American astronomer.


Seyfert galaxy