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Title:
The polarization of Seyfert galaxies
Authors:
Martin, P. G.; Thompson, I. B.; Maza, J.; Angel, J. R. P.
Affiliation:
AA(David Dunlap Observatory, Richmond Hill, Ontario; Toronto, University, Toronto, Canada), AB(Western Ontario, University, London, Canada; Mount Wilson and Las Campanas Observatoires, Pasadena, CA), AC(David Dunlap Observatory, Richmond Hill, Ontario, Canada), AD(Steward Observatory, Tucson, AZ)
Publication:
Astrophysical Journal, Part 1, vol. 266, Mar. 15, 1983, p. 470-478. Research supported by the Natural Sciences and Engineering Research Council of Canada. (ApJ Homepage)
Publication Date:
03/1983
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
LINEAR POLARIZATION, OPTICAL POLARIZATION, QUASARS, SEYFERT GALAXIES, EMISSION SPECTRA, INTERSTELLAR RADIATION, LINE SPECTRA, STATISTICAL DISTRIBUTIONS, VARIABILITY
DOI:
10.1086/160795
Bibliographic Code:
1983ApJ...266..470M

Abstract

The optical linear polarization of 99 Seyfert galaxies has been measured. Several highly polarized objects have been discovered and are discussed elsewhere. However, most Seyferts have very little polarization (approximately equal to or less than 0.5%) and much of this might be produced by foreground dust in the Galaxy; thus the occurrence of substantial intrinsic polarization is quite rare. Some significant similarities and differences between Seyfert and QSO polarization are discussed. A few measurements for narrow emission line galaxies are also presented.

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