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Low-Luminosity Active Nuclei in Elliptical Galaxies

Published online by Cambridge University Press:  04 August 2017

Elaine M. Sadler
Elaine M. Sadler*
Affiliation:
Kitt Peak National Observatory, National Optical Astronomy Observatories, P. O. Box 26732 Tucson, AZ 85726

Abstract

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The results of a sensitive radio and optical survey of nearby early-type galaxies show that most (perhaps all) bright ellipticals have ‘active’ nuclei. These are characterized by a central non-thermal radio source and a weak LINER-like optical emission spectrum. There appears to be a smooth continuity in optical and radio properties from the weakest nearby sources to strong radio galaxies. Galaxies with radio sources usually show optical emission lines, but there is no simple relationship between gas content and radio power.

Type
VII. Low Level Activity and Intermediate Objects
Information
Symposium - International Astronomical Union , Volume 121: Observational Evidences of Activity of Galaxies , 1987 , pp. 443 - 450
Copyright
Copyright © Reidel 1987 

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