What is the difference between radio galaxies and radio quasar galaxies

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/165527· OSTI ID:5553575

Hutchings, J B

Deep optical imaging in the B and R band of about 50 luminous radio galaxies and radio QSOs in the redshift range 0.1-0.5 is reported. More than 80 percent of each type of object are optically interacting; about 60 percent are irregular in some way, and about 30 percent have tidal tails. Separations range from a few kpc to tens of kpc. About 30 percent of the objects have elliptical galaxy characteristics and none has spiral. The mean optical absolute magnitude of radio galaxies is fainter by 1 mag than the host galaxies of QSOs, and the distributions differ significantly. Radio galaxies are redder and larger and have smaller luminosity scale lengths than QSO hosts. Thus, they are a different sample of objects. In all objects, however, galaxy size is greatest at M(R) of about -22, and at the lower redshifts. 30 references.

• Research Organization: Dominion Astrophysical Observatory, Victoria
• OSTI ID: 5553575
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 320; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONFIGURATION
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELLIPTICAL CONFIGURATION
GALAXIES
IMAGES
LUMINOSITY
MORPHOLOGY
OPTICAL PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
QUASARS
RADIATIONS
RADIO GALAXIES
RED SHIFT
SIZE
VISIBLE RADIATION