Short time-scale variability in bright Seyfert galaxies

Details Short time-scale variability in bright Seyfert galaxies Short time-scale variability in bright Seyfert galaxies

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103..378x&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 103, April 1991, p. 378-382. NSERC-supported research.

Astronomy and Astrophysics

Astronomy

3

Astronomical Spectroscopy, Emission Spectra, Line Spectra, Seyfert Galaxies, Active Galactic Nuclei, Balmer Series, Forbidden Transitions, Photoionization, Variability

Scientific paper

High-quality, long-slit CCD spectroscopic data were obtained to search for short time-scale (hour-day) variability in a sample of five Seyfert galaxies. The equivalent widths of all of the emission lines and the relative intensities of the Balmer lines were measured for each galaxy. No significant profile or flux variations were observed for any galaxy within errors, except for NGC 4151. The broad-line flux variation in NGC 4151 is attributed to continuum fluctuations.

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