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Seyfert Galaxies: Classification, Morphology, Observations at Optical Wavelengths, Environmental Factors

Published online by Cambridge University Press:  04 August 2017

Donald E. Osterbrock
Donald E. Osterbrock*
Affiliation:
Lick Observatory, Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz, California 95064, USA

Abstract

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Recent optical work on Seyfert galaxies is summarized, particularly on their spectral classification, morphology, companions, and presence in clusters of galaxies. Their general continuity with QSOs and with Liners is emphasized. Methods of finding additional Seyfert galaxies and of assembling a complete sample for investigating the luminosity function of AGNs are also discussed.

Type
III. Seyfert Galaxies
Information
Symposium - International Astronomical Union , Volume 121: Observational Evidences of Activity of Galaxies , 1987 , pp. 109 - 118
Copyright
Copyright © Reidel 1987 

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