11243( 1) - 03/30/07 11:03 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11243 Version: 1 Check-in Time: 30-Mar-2007 15:02:54 STScI Edit Number: 0 Title Determining the Inclinations of AGN using Narrow-Line Region Kinematics ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance AR 16 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. D. Michael Crenshaw Georgia State University Research Foundation CoI: Prof. Steven Kraemer Catholic University of America N CoI: Dr. Varendra Das Indian Institute of Astrophysics N ------------------------------------------------------------------------------------ Abstract We will determine the inclinations of the AGN in 36 Seyfert galaxies with STIS G430M and/or G430L long-slit spectra, by measuring radial velocities as a function of position in their narrow-line regions (NLRs) and generating kinematic models to match the observed radial velocities. Our previous studies of three Seyfert galaxies with STIS show that the kinematics of their NLRs are dominated by radial outflow, and that simple biconical outflow models can be used to derive the inclination of the bicone axis, and hence the obscuring torus, with respect to our line of sight. The inclinations will be compared with those from other techniques (water masers, broad Fe K-alpha profiles) to test for discrepancies and identify possible misalignments between the accretion disk, torus, and/or host galaxy. More importantly, our results will provide the foundation for future studies that investigate the dependence of observed properties (e.g., SEDs, absorbing columns, broad-line widths) on inclination, which is vital for understanding the physics of AGN. ------------------------------------------------------------------------------------