We present results from very high signal-to-noise spectropolarimetric observations of the Seyfert 1 galaxy NGC 3783. Position Angle (PA) changes across the Balmer lines show that the scatterer is resolving the Broad- Emission Line Region (BLR). A broad component seen in polarized light and located bluewards from the H line very likely corresponds to HeII 4686. The lack of PA changes across this line suggests that the region responsible for this emission appears to the scatterer as unresolved as the continuum source, in agreement with the stratified BLR structure determined from reverberation mapping.

Date of creation, presentation, or exhibit



This is the pre-print of a paper published by the Astronomical Society of the Pacific. The final, published version is available here:

Presented at the Central Engine of Active Galactic Nuclei, ASP Conference Series

© 2007 Astronomical Society of the Pacific

Also archived in: arXiv:astro-ph/0612647 v1 Dec 2006

Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in February 2014.

Document Type

Conference Paper

Department, Program, or Center

School of Physics and Astronomy (COS)


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