Ellipticity of Nearby Elliptical Galaxies Identified with Extended Extragalactic Radio Sources |
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| Authors: | R R Andreasyan H Sol |
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| Institution: | (1) Byurakan Astrophysical Observatory, Armenia;(2) Meudon Observatory, Paris, France |
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| Abstract: | The dependence of the ellipticity of nearby optical galaxies associated with extragalactic radio sources on the type of radio galaxy is considered. It is shown that elliptical galaxies identified with radio galaxies of the FRI type and with radio sources having a radio image with a small elongation have a smaller ellipticity, on the average, than those associated with radio galaxies of the FRII type and with radio sources with greater elongation. As one possible explanation for this phenomenon, one can assume that the optical galaxies associated with radio galaxies of type FRI and with radio sources of small elongation are oriented in space so that they are observed edge-on relatively rarely. |
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