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A Search for Optical Line Variability in Narrow-Line Seyfert 1 Galaxies

Published online by Cambridge University Press:  12 April 2016

M. Ester Giannuzzo  and
Giovanna M. Stirpe
M. Ester Giannuzzo
Affiliation:
Dipartimento di Astronomia, Università degli Studi di Bologna, Via Zamboni 33, 40126 Bologna, Italy
Giovanna M. Stirpe
Affiliation:
Osservatorio Astronomico di Bologna, Via Zamboni 33, 40126 Bologna, Italy

Abstract

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We present the results of a variability study of ‘narrow-line Seyfert 1 galaxies’: in 10 objects out of 12 the optical line flux changed in one year, with no statistical differences in variability with respect to ‘normal’ Seyfert 1s. We discuss how models for NLSls are affected.

Type
III. Broad-Line Profiles and Variability
Information
International Astronomical Union Colloquium , Volume 159: Emission Lines in Active Galaxies: New Methods and Techniques , 1997 , pp. 173 - 174
Copyright
Copyright © Astronomical Society of the Pacific 1997