Determining AGN Inclinations Via Narrow-Line Kinematics

Details Determining AGN Inclinations Via Narrow-Line Kinematics Determining AGN Inclinations Via Narrow-Line Kinematics

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21913104f&link_type=abstract

American Astronomical Society, AAS Meeting #219, #131.04

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Scientific paper

Active Galactic Nuclei (AGN) are, to first order, axisymmetric systems in which their observed properties are strong functions of inclination with respect to our line of sight. However, except for a few special cases, the specific inclinations of individual AGN are unknown. Using high-resolution HST STIS spectra, I have modeled inclinations for 16 AGN from their narrow-line region (NLR) kinematics. As this study provides an early look on the varied inclinations of AGN, we can for the first time assess the effect of inclination on other observable parameters in radio-quiet AGN, including the discovery of a distinct correlation between AGN inclination and X-ray column density. As our line of sight with respect to the bicone axis increases, the torus surrounding the AGN becomes closer to edge-on and we see a seamless increase in column densities between Seyfert 1 and Seyfert 2 galaxies.

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