Seyfert galaxy
Concise Oxford English Dictionary © 2008 Oxford University Press:
Seyfert galaxy /ˈseɪfəːt/
▶noun Astronomy a galaxy of a type characterized by a bright compact core showing strong infrared emission.
– origin 1950s: named after the American astronomer Carl K. Seyfert.
'Seyfert galaxy' also found in these Oxford entries:

