Anomalous Trends in Quasar Emission Lines with Accretion Disk Temperature

Details Anomalous Trends in Quasar Emission Lines with Accretion Disk Temperature Anomalous Trends in Quasar Emission Lines with Accretion Disk Temperature

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21915421s&link_type=abstract

American Astronomical Society, AAS Meeting #219, #154.21

Astronomy and Astrophysics

Astronomy

Scientific paper

We compare AGN emission-line properties with theoretical models of the ionizing continua of accretion disks. We infer the characteristic disk temperature from a sample of SDSS AGN based on bolometric luminosity and black hole mass. Observed emission-line intensities show only a slight trend of higher ionization with higher accretion disk temperature, much weaker than predicted. Observed equivalent widths of broad Hβ show a systematic decrease with disk temperature, in contrast to a predicted strong increase based on disk models. We discuss modified radial temperature profiles for the disk that give improved agreement with observation.

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