Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...399...50g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 399, no. 1, p. 50-56.
Astronomy and Astrophysics
Astrophysics
25
Astronomical Polarimetry, Astronomical Spectroscopy, Forbidden Bands, Interacting Galaxies, Seyfert Galaxies, Cosmic Dust, Emission Spectra, Interstellar Extinction, Line Spectra, Markarian Galaxies, Red Shift
Scientific paper
The study presents high-resolution (140 km/s) spectropolarimetry of the forbidden O III 4959, 5007 emission lines in 12 Seyfert 2 galaxies in order to search for kinematic features in the narrow-line regions. NGC 2992 is polarized by a foreground dust lane in the host galaxy. The red wings and cores of the forbidden O III lines have higher polarization than the blue wings. Mrk 463E exhibits distinct redshifted and blueshifted components which are spatially separated along an N-S slit, although not along an E-W slit. In Mrk 78 distinct kinematic components are spatially resolved but none of the components are highly polarized. As a by-product of the spectropolarimetry, high-resolution forbidden O III line profiles and asymmetry measurements for 14 Seyfert galaxies are presented.
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