On the unity of activity in galaxies

Journal Article · Sun May 01 00:00:00 EDT 1977 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/155195· OSTI ID:7216472

Rowan-Robinson, M

A scheme is presented which unites quasars, radio galaxies, N galaxies, and Seyfert galaxies into a single picture of activity in galaxies. Probability functions are given for optical and radio cores, and extended radio sources (in the case of ellipticals), for both spirals and ellipticals. Activity occurs in galaxies of all luminosities, but the strength of it is made proportional to galaxy luminosity. It is assumed that there is dust surrounding the optical cores, to explain the strong infrared emission in Seyferts.Quasars may, in this picture, occur in both spirals and ellipticals, and in fact most optically selected QSOs are predicted to be in spirals.

• Research Organization: Dept. of Applied Mathematics, Queen Mary College, Mile End Rd., London E1
• OSTI ID: 7216472
• Journal Information: Astrophys. J.; (United States), Vol. 213:3
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
QUASARS
LUMINOSITY
RADIO GALAXIES
SEYFERT GALAXIES
ENERGY SPECTRA
GALACTIC EVOLUTION
INFRARED RADIATION
PROBABILITY
RADIOWAVE RADIATION
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
GALAXIES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SPECTRA
640105* - Astrophysics & Cosmology- Galaxies
640103 - Astrophysics & Cosmology- Quasi-Stellar
Radio
& X-Ray Sources- (-1987)