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UV Variability of a Large Sample of AGN

Published online by Cambridge University Press:  19 July 2016

S. Paltani  and
T. J.-L. Courvoisier
S. Paltani
Affiliation:
Institut d'Astronomie de l'Université de Lausanne, CH-1290 Chavannes-des-Bois
T. J.-L. Courvoisier
Affiliation:
Observatoire de Genève, CH-1290 Sauverny

Extract

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The IUE-ULDA database (Version 3.0, complete until the end of 1988) contains about 3500 spectra of more than 500 AGN of different classes (see Courvoisier and Paltani, IUE-ULDA Access Guide No. 4 A & B, ESA SP 1153 A & B 1992). We selected 67 objects for which the variability properties could be investigated. For each object we estimated the amplitude of the variability by means of the standard deviation σ(λ) of the flux at different frequencies divided by the mean flux.

Type
Poster Contributions: Continuum studies
Information
Symposium - International Astronomical Union , Volume 159: Multi-Wavelength Continuum Emission of AGN , 1994 , pp. 331
Copyright
Copyright © Kluwer 1994