Seyfert Galaxy

Seyfert Galaxy

Seyfert galaxies are a class of galaxies with nuclei that produce spectral line emission from highly ionized gas, named after Carl Keenan Seyfert, the astronomer who first identified the class in 1943. The centres of Seyfert galaxies form a subclass of active galactic nuclei (AGN), and are thought to contain supermassive black holes with masses between 107 and 108 solar masses.

Read more about Seyfert Galaxy:  Characteristics, Classification

Famous quotes containing the word galaxy:

    “for it is not so much to know the self
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