Annu. Rev. Astron. Astrophys. 1982. 20: 431-468
Copyright © 1982 by . All rights reserved

Reprinted with kind permission from , 4139 El Camino Way, Palo Alto, California, USA

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EXTRANUCLEAR CLUES TO THE ORIGIN AND EVOLUTION OF ACTIVITY IN GALAXIES

Bruce Balick

Astronomy Department, University of Washington, Seattle, Washington 98195

Timothy M. Heckman

Astronomy Program, University of Maryland, College Park, Maryland 20742 and Steward Observatory, University of Arizona, Tucson, Arizona 85721

Table of Contents

What is an Active Galaxy?

The Scope of the Review

THE INFLUENCE OF THE EXTRAGALACTIC ENVIRONMENT

Cluster Environment

Near-Neighbors and Interacting Systems

ACTIVITY AND THE STELLAR PROPERTIES OF GALAXIES

Morphological Types

Stellar Kinematics

Absolute Magnitude

Bars, Rings, and Disk Anomalies

Stellar Populations and Birthrates

GAS AND DUST IN ACTIVE GALAXIES

Neutral and Molecular Gas

Extranuclear Ionized Gas

COSMOLOGICAL EVOLUTION OF ACTIVE NUCLEI

The Importance of Fluids: Radial Motions

Causes of Activity

Concluding Remarks