NOAO >   Observing Info >   Approved Programs >   2002A-0352

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Proposal Information for 2002A-0352


PI: Charles Nelson, Drake University, charles.nelson@drake.edu
Address: Drake University, 2507 University Ave., Des Moines, IA 50311, USA

CoI: Richard Gelderman, Western Kentucky University

Title: Black Hole Masses from [OIII] Line Profiles in PG Quasars

Abstract: We propose to obtain high S/N, high resolution spectroscopy centered on the [OIII] (lambda) 5007 emission line for all of the PG quasars. Previous results have shown that the kinematics of the narrow line region gas (NLR) are predominantly due to gravitational motion in the bulge potential of the host galaxy. Thus, using the now well established correlation between bulge velocity dispersion, \sigs, and nuclear black hole mass, \Mbh, we can use the FWHM of the emission line profiles to estimate \Mbh for the entire sample. This technique is independent of reverberation mapping techniques which rely on the assumption of Keplerian motion in the broad line region (BLR). We plan to use these \Mbh values to estimate the Eddington ratio, and to test the idea that L/L_E is the primary influence on the group of AGN correlations known as eigenvector 1. We will also use the NLR kinematics to investigate the possibility of lower M/L in the AGN host galaxy bulge compared to normal galaxies. In those cases where the emission line profile shows evidence for substructure we will examine the effects of gas-jet interactions in the NLR.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2002A-0352

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