Extended regions of ionized gas around active galactic nuclei

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Active Galactic Nuclei, Cosmic Gases, Galactic Radiation, Ionized Gases, Nuclear Astrophysics, Line Spectra, Quasars, Radio Galaxies, Seyfert Galaxies

Scientific paper

Narrow-band imaging of a sample of active galactic nuclei has revealed the presence of several extranuclear emission line regions. The four objects found to have definite extranuclear emission include a radio-loud steep spectrum QSO with extended radio emission, a dwarf Seyfert 2 galaxy, an X-ray emitting radio-weak intermediate Seyfert galaxy, and a companion galaxy of another intermediate Seyfert galaxy. It is noted that due to the small number of objects involved and their diversity, no conclusive statement can be made concerning the correlations found by Boroson and Oke (1984).

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