What is the difference between radio galaxies and radio quasar galaxies

Journal Article · Tue Sep 01 00:00:00 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), Vol. 320
• Country of Publication: United States
• Language: English

Related Subjects

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