The region responsible for producing the narrow [[emission lines]] seen in the spectra of some classes of [[active galaxy]]. The narrow-line region is believed to be further away from the [[central engine]] of [[active galactic nuclei]] (AGN) than the [[broad-line region]]. [[Seyfert galaxies]] [[quasar]] [[../Chapters/Topic 3 Mapping the Universe]] [[Docent/S284 Astronomy]]