Spectral study of galaxies with ultraviolet excess and double and multiple nuclei. II - Galaxies with Seyfert features of the components of the nuclei

Details Spectral study of galaxies with ultraviolet excess and double and multiple nuclei. II - Galaxies with Seyfert features of the components of the nuclei Spectral study of galaxies with ultraviolet excess and double and multiple nuclei. II - Galaxies with Seyfert features of the components of the nuclei

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979afz....15..373p&link_type=abstract

(Astrofizika, vol. 15, July-Sept. 1979, p. 373-381.) Astrophysics, vol. 15, no. 3, Jan. 1980, p. 250-256. Translation.

Astronomy and Astrophysics

Astrophysics

14

Astronomical Spectroscopy, Galactic Nuclei, Galactic Radiation, Seyfert Galaxies, Ultraviolet Spectra, Astrophysics, Emission Spectra, Radial Velocity

Scientific paper

The results are given of spectral observations of four two-nucleus galaxies with ultraviolet excess that exhibit Seyfert features. The existence of galaxies with two condensations with Seyfert spectra (Markarian 463, 673, 789) was established, which proves that galaxies can exist with two nuclei. In the spectrum of one of the components of Markarian 789 (component a) the main lines, forbidden S II 6731/6717, H-alpha, and forbidden N II 6583/6548 have emission components on the red side displaced by an amount corresponding to a Doppler velocity of about 350 km/sec. It is suggested that this galaxy is either a galaxy with a multiple nucleus or that an explosion took place in its nucleus like the one observed in Markarian 6.

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