Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990azh....67..463z&link_type=abstract
Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 67, May-June 1990, p. 463-471. In Russian.
Astronomy and Astrophysics
Astronomy
1
Active Galactic Nuclei, Emission Spectra, Molecular Clouds, Seyfert Galaxies, Equations Of Motion, H Beta Line, Satellite Observation
Scientific paper
Formulas are derived describing the profile of emission lines formed during the motion of emission clouds inside a conical jet with a small opening angle. It is assumed that the clouds are accelerated by radiation of the central body. Based on the width of the satellites observed at both sides of the H-beta line in the spectrum of the Seyfert galaxy NGC 4151, a jet opening angle of about 5 deg is estimated for this object.
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