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Are the Narrow-Line Regions in Active Galaxies Dusty and Radiation Pressure Dominated?

Dopita, Michael; Groves, Brent; Sutherland, Ralph; Binette, Luc; Cecil, Gerald


The remarkable similarity between emission spectra of narrow-line regions (NLRs) in Seyfert galaxies has long presented a mystery. In photoionization models, this similarity implies that the ionization parameter is nearly always the same, about U ∼ 0.01

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1086/340429


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