An optical and near-infrared polarization survey of Seyfert and broad-line radio galaxies. I - Statistical properties. II - The wavelength dependence of polarization

Details An optical and near-infrared polarization survey of Seyfert and broad-line radio galaxies. I - Statistical properties. II - The wavelength dependence of polarization An optical and near-infrared polarization survey of Seyfert and broad-line radio galaxies. I - Statistical properties. II - The wavelength dependence of polarization

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.244..577b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 244, June 15, 1990, p. 577-618.

Astronomy and Astrophysics

Astronomy

85

Infrared Astronomy, Optical Polarization, Radio Galaxies, Seyfert Galaxies, Sky Surveys (Astronomy), Wavelengths, Broadband, Density Measurement, Statistical Analysis, Tables (Data)

Scientific paper

The present broad-band and near-IR flux density and polarization measurements of a sample of 71 Seyfert galaxies and three broad-line radio galaxies confirms earlier indications that the polarization of Seyferts is generally low in the V-band and at longer wavelengths. A tendency is noted for the polarization to be parallel to the galaxy optical or dust-lane axis; previous indications that the polarization of Seyfert 2s tends to be perpendicular to the radio axis are confirmed. In the second part of this work, the 0.44-2.2 micron wavelength dependence of polarization for this sample of 71 Seyfert and three broad-line radio galaxies is discussed. Most objects in the sample exhibit decreasing polarization with increasing wavelength, as may be expected in polarization induced by either dichroic absorption or scattering.

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