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Paper: Spectropolarimetry and the Structure of Type 1 Seyfert Nuclei
Volume: 343, Astronomical Polarimetry: Current Status and Future Directions
Page: 474
Authors: Smith, J.E.; Robinson, A.; Axon, D.J.
Abstract: We describe the results of a detailed study of the polarization properties of the broad Hα emission line in Type 1 Seyfert nuclei. Our analysis of these data points to a model in which the broad Balmer lines are emitted by a rotating disk, and are scattered in two main regions - one co-planar with the disk and within the circum-nuclear torus, the other, the polar scattering region, outside the torus but aligned with its axis. The relative importance of the two sources of polarized light is largely determined by the inclination of the system axis to the line-of-sight, thereby reinforcing unification schemes.
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