Astronomy glossary
What is Seyfert galaxy?
Seyfert galaxy — a galaxy (usually a spiral) with a very bright nucleus and strong spectral emission lines; the first was discovered in 1943 by Carl Seyfert
Astronomy glossary
Seyfert galaxy — a galaxy (usually a spiral) with a very bright nucleus and strong spectral emission lines; the first was discovered in 1943 by Carl Seyfert