The Optical Properties of the Host Galaxies of FR I and FR II Radio Sources
The two Fanaroff & Riley classes of radio galaxies are defined by radio morphology, and the distinction may arise from a combination of environmental conditions and central engine power. Several studies have suggested that powerful, FR II, radio galaxies are on average 0.5 mag fainter optically (i.e., are smaller) than weak, FR I, radio galaxies
Scarpa, R. et al.
Fecha de publicación:
12
1999