Emission-line variability of three Seyfert galaxies

Details Emission-line variability of three Seyfert galaxies Emission-line variability of three Seyfert galaxies

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....92..552p&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 92, Sept. 1986, p. 552-556.

Astronomy and Astrophysics

Astronomy

26

Emission Spectra, H Beta Line, Line Spectra, Periodic Variations, Seyfert Galaxies, Astronomical Spectroscopy, Continuous Spectra, Cross Correlation, Spectrum Analysis, Visible Spectrum

Scientific paper

The authors present recent observations of the intensity of the broad Hβ component and underlying continuum in Akn 120 and Mrk 79. They perform a cross-correlation analysis of these data and similar observations of NGC 5548 (reported elsewhere) to estimate the broadline-region sizes. The main broadline region of NGC 5548 has peak emissivity at a radius of 31 light-days. The Mrk 79 observations do not yield a size. The radius of peak emissivity of the Akn 120 broadline region has remained ≤1 light week for almost half a decade.

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