High-resolution emission-line imaging of Seyfert galaxies. I - Observations. II - Evidence for anisotropic ionizing radiation

Details High-resolution emission-line imaging of Seyfert galaxies. I - Observations. II - Evidence for anisotropic ionizing radiation High-resolution emission-line imaging of Seyfert galaxies. I - Observations. II - Evidence for anisotropic ionizing radiation

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...334..104h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 334, Nov. 1, 1988, p. 104-119, 121-129.

Astronomy and Astrophysics

Astronomy

133

Astronomical Spectroscopy, Galactic Structure, Ionizing Radiation, Radio Jets (Astronomy), Seyfert Galaxies, Emission Spectra, Line Spectra

Scientific paper

The authors report a direct imaging survey, conducted with CCD detectors, of 11 Seyfert galaxies in [O III] λλ4959, 5007, Hα+[N II] λλ6548, 6584, and their adjacent continua. The narrow-line regions of all the galaxies are spatially resolved. Ten of these galaxies contain "linear" radio continuum sources (i.e., double, triple or jetlike straddling the optical continuum nucleus) on the hundreds of parsecs scale. In all 10 galaxies, the [O III] and radio major axes are aligned to within the errors (typically ≤5°). In addition, there is good agreement between the radio and Hα axes, and the spatial scales of radio and line-emitting gases are very similar.

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