Investigation of profiles of bright emission lines in the nucleus of the Seyfert galaxy Markaryan 533

Astronomy and Astrophysics – Astrophysics

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Brightness Distribution, Emission Spectra, Galactic Nuclei, Line Shape, Seyfert Galaxies, Spectrum Analysis, Continuous Spectra, Normal Density Functions, Periodic Variations, Radio Spectra, Spectral Energy Distribution, Spectral Line Width

Scientific paper

Gaussian analysis has been used to obtain the profiles of bright emission lines in the nucleus of the Seyfert galaxy Markarian 533 on the basis of spectra obtained using the 6-m telescope in 1977 and 1981. Blue components of the forbidden O III, He II, H-beta, H-alpha lines, displaced relative to the central components by -800 km/sec and -1500 km/sec, have been identified. It is shown that the high-velocity gas is situated nearer the ionization source than the region of emission of the central components. Variability of the continuum of the nucleus of Markarian 533 is noted and variability of the blue components of H-beta and H-alpha is suspected.

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