Physical Conditions in Narrow-Line Radio Galaxies and Seyfert 2 Galaxies

Details Physical Conditions in Narrow-Line Radio Galaxies and Seyfert 2 Galaxies Physical Conditions in Narrow-Line Radio Galaxies and Seyfert 2 Galaxies

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984iue..prop.1789c&link_type=abstract

IUE Proposal ID #QSGRC

Computer Science

Scientific paper

Narrow-line radio galaxies and Seyfert 2 galaxies are active galaxies with very similar optical spectra. Both classes of objects (particularly the radio galaxies) have been little observed with the IUE. Comparison of L-alpha/H-alpha with H-alpha/H-beta and H-beta/H-gamma in these two classes of galaxies will enable us to determine whether these ratios are consistent with case B recombination and reddening as believed, or whether more parameters are needed. This important problem should be much more easily studied in these narrow-line objects than in quasars and Seyfert 1 galaxies because of the low densities and optical depths in the narrow-line region, relative to those in the broad-line region. The ultraviolet spectra of these two different types of narrow-line galaxies will also be compared as part of this project.

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