Other
Scientific paper
Mar 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84..302b&link_type=abstract
Astronomical Journal, vol. 84, Mar. 1979, p. 302-310.
Other
50
Astronomical Photometry, Galactic Nuclei, Interstellar Gas, Seyfert Galaxies, Spectrophotometry, Astronomical Spectroscopy, Galactic Structure
Scientific paper
The extranuclear regions of NGC 1068, 3C 120, NGC 1275, Mrk 1, and Mrk 3 have been examined spectrophotometrically. In every case gas about 1 kpc or more from the nucleus exhibits certain spectroscopic similarities to the nucleus in terms of velocities and relative line intensities. These results strongly suggest that some sort of communication exists between the nucleus and the gas outside. Each galaxy has highly individual characteristics in many respects. NGC 1068 has an elliptical region extending at least about 600 kpc that seems to be ionized much like the nucleus. 3C 120 has at least two regions lying more than 5 kpc from the nucleus whose ionization appears to be similar to that in the nucleus but whose internal dynamics are distinctly different. Mrk 1, on the other hand, shows only weak off-nuclear emission lines whose widths are about the same as that of the nucleus itself.
Balick Bruce
Heckman Tim
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