Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.1002x&link_type=abstract
American Astronomical Society, 189th AAS Meeting, #10.02; Bulletin of the American Astronomical Society, Vol. 28, p.1285
Astronomy and Astrophysics
Astronomy
Scientific paper
We present narrow-band continuum-free emission-line (Hα and [O III]) as well as green and red continuum images of a sample of 14 radio-quiet active galaxies which includes 4 Seyfert 1, 7 Seyfert 2 galaxies and 3 Low Ionization Emission Line Regions (LINERS). The galaxies were observed at the 0.9-m telescope of Cerro Tololo and cover all Interaction Activity Levels. In this first part of the project we compare the morphology of the circumnuclear environment and extended emission (when present) of the Seyfert 1 and 2 galaxies, while a possible connection between ionization structure and extended emission with tidal interactions is also examined. The results are interpreted in view of the ``Unified model". We also examine how do LINERS fit in this picture. In a follow up work we present the ionization maps for the galaxies in the sample that have extended structure, we search for a correlation between emission-line and continnum knot-to-knot structure, as well as a correlation between optical and radio emission using high-resolution radio maps and we show calculations of ionization (dust heating photons) deficiency for the appropriate candidates.
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