Detection of an [O III] λ5007 radiation cone in the nuclei of NGC 1365 and 7582

Using Narrow-band imagery, we have detect a cone of radiation in the [O III]λ5007 line in the nuclei of NGC 1365 and 7582 with emission directed, respectively, toward the south-east and south-west. Adopting a distance of 20 Mpc to NGC 1365 and 21 Mpc to NGC 7582, with $H_0 = 75 \enspace \text {km s}...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 1991-05, Vol.250 (1), p.138-143
Main Authors: Storchi-Bergmann, Thaisa, Bonatto, Charles J.
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
Quasars. Active or peculiar galaxies, objects, and systems
Stellar systems. Galactic and extragalactic objects and systems. The universe
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Summary:Using Narrow-band imagery, we have detect a cone of radiation in the [O III]λ5007 line in the nuclei of NGC 1365 and 7582 with emission directed, respectively, toward the south-east and south-west. Adopting a distance of 20 Mpc to NGC 1365 and 21 Mpc to NGC 7582, with $H_0 = 75 \enspace \text {km s}^{-1} \enspace \text {Mpc}^{-1}$ the projected dimensions of the cones are about 1.0 × 1.5 and 1.9 × 1.6 kpc, respectively. The presence of these cones had been previously suggested on the basis of images obtained with the TAURUS Fabry–Perot interferometer and spectroscopic observations, and can be clearly seen in our images after the subtraction of the continuum emission. These observations are new examples of cone morphologies ot high-excitation gas previously found in other Seyfert 2 galaxies. The analysis of the available data on NGC 1365 and 7582 favours the so-called ‘unified AGN models’.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/250.1.138