Other
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.258..306b&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 2, Sept. 15, 1992, p. 306-320. Research suppor
Other
7
Active Galactic Nuclei, Line Shape, Line Spectra, Photoionization, Seyfert Galaxies, Electron Density (Concentration), H Alpha Line, H Beta Line, Ionization Potentials
Scientific paper
A sample of high-resolution AGN narrow spectral line profiles is statistically analyzed. Although not very large, differences in width and shape between these lines, seen in the same object, are found to be significant. The range spanned by these differences is the same in Seyfert 1 (Sy 1), Seyfert 2 (Sy 2) and LINER objects. Width and shape profile parameters show systematic dependences with ionization potential and critical density of each forbidden emission line. The results indicate that in Sy 1 objects the central ionization source plays a fundamental role in shaping the narrow-line region structure. The same is not necessarily true in Sy 2 galaxies, in which the narrow-line region line profiles seem to depend on other factors besides the central location of the ionization source.
Busko Ivo C.
Steiner Joao Evangelista
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