Spectroscopy of the Dusty Torus in PG Quasars

Details Spectroscopy of the Dusty Torus in PG Quasars Spectroscopy of the Dusty Torus in PG Quasars

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20142o&link_type=abstract

Spitzer Proposal ID #20142

Computer Science

Scientific paper

We propose IRS SL+LL spectroscopic observations of the dusty tori in the complete sample of UV-color selected PG quasars with redshift z<0.5. We will model each torus emission spectrum to determine torus covering fraction, temperature distribution, and dust composition. The torus covering fraction may be a function of quasar age, determined from host galaxy merger stage. We will also compare the torus and broad emission line properties of the PG quasars to determine if covering fraction is the key parameter determining Fe II and [O III] emission strengths. Additionally, we will search for a connection between torus covering fraction and black hole accretion rate relative to the Eddington limit. In this way, we hope to illuminate the connections between the properties of the torus as a fuel reservoir, the broad line region, and the accretion flow powering the quasar.

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