Are the Narrow-Line Regions in Active Galaxies Dusty and Radiation Pressure Dominated?
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
|Collections||ANU Research Publications|
|Source:||Astrophysical Journal, The|