Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...368..158v&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 368, Feb. 10, 1991, p. 158-166. Research supported by NSERC and Ministere d
Astronomy and Astrophysics
Astrophysics
11
Astronomical Spectroscopy, Line Spectra, Markarian Galaxies, Seyfert Galaxies, Active Galactic Nuclei, Emission Spectra, Ionization, Spectral Line Width
Scientific paper
The results of a kinematic study of the narrow- and broad-line regions in Mrk 359 are presented. The emission-line profiles between 4600 and 7500 A are used to derive the physical characteristics of the line-emitting gas. Many aspects of the emission-line profiles of Mrk 359 make this object an exceptional Seyfert galaxy: extremely small widths of both the forbidden lines and the broad component of the permitted lines, absence of profile substructure, large blueward asymmetry of the high-ionization forbidden lines despite the apparent absence of reddening in the narrow-line region. Various scenarios are proposed to explain these results.
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