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IUE Monitoring of the Bright Seyfert 1 Galaxy Fairall 9

Published online by Cambridge University Press:  12 April 2016

P. M. Rodríguez-Pascual
P. M. Rodríguez-Pascual*
Affiliation:
ESA-IUE Observatory, P.O. Box 50727, 28080 Madrid, Spain

Abstract

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An eight-month spectrscopic monitoring campaign on the Seyfert 1 galaxy Fairall 9 has been carried out with the International Ultraviolet Explorer (IUE) in order to measure continuum-continuum and continuum-emission-line delays for a high-luminosity active galactic nucleus (AGN). The results are consistent with those of previous campaigns on lower luminosity AGNs: (i) there is no measurable time lag between different ultraviolet continuum bands, (ii) the measured time lags for the emission lines are relatively short, and (iii) the more rapid and stronger response to continuum changes of He II, as compared to C IV, is consistent with a stratified broad-line region (BLR) structure.

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. 167 - 168
Copyright
Copyright © Astronomical Society of the Pacific 1997

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