NGC 4151 after the deep minimum of 1984

Details NGC 4151 after the deep minimum of 1984 NGC 4151 after the deep minimum of 1984

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pazh...17..238o&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 17, March 1991, p. 238-248. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

1

Active Galactic Nuclei, Astronomical Catalogs, Astronomical Photometry, Stellar Spectra, Cross Correlation, Ionizing Radiation, Minima, Seyfert Galaxies

Scientific paper

Spectral and photometric observations of the nucleus of NGC 4151 which
were carried out after the minimum of 1984 are presented. Fourier and
cross-correlation analysis of data obtained during 1983-1990 shows that
the continuum variability time-scale decreased in comparison with the
'active' state of the nucleus during 1968-1980.

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