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The Excitation Mechanism of Emission-line Regions in Seyfert Galaxies

Evans, Ian; Koratkar, Anuradha; Allen, M; Dopita, Michael; Tsvetanov, Zlatan


We present Hubble Space Telescope UV/optical spectrophotometry and ground-based optical spectrophotometry of the brightest knots in the emission-line regions of the Seyfert galaxies NGC 5643 and NGC 5728. These objects have ionization cones, radio and soft X-ray emission, and evidence of nuclear outflows and winds, suggesting that shocks may be associated with the emission-line gas. Comparison of the UV/optical data with grids of ionization-bounded and mixed ionization-and matter-bounded...[Show more]

CollectionsANU Research Publications
Date published: 1999
Type: Journal article
Source: Astrophysical Journal, The


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