On Broad Emission-Line Profiles from Active Galactic Nuclei

Details On Broad Emission-Line Profiles from Active Galactic Nuclei On Broad Emission-Line Profiles from Active Galactic Nuclei

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26at...23....1w&link_type=abstract

Astronomical and Astrophysical Transactions, Vol. 23, p. 1-33

Astronomy and Astrophysics

Astronomy

Quasistellar Objects, Emission Lines, Seyfert Galaxies

Scientific paper

A broad-line region (BLR) disc model is derived and fitted to 121 published broad emission-line profiles from quasi-stellar objects (QSOs) and Seyfert I galaxies. Keplerian rotation of material in calm circular orbits, plus stimulated, non-isotropic emission is best suited to explain the observed profiles. BLR discs in QSOs are, within the framework of the model, found to be tapered and extensive, whereas Seyfert I discs are usually fanned-out but equally extensive. Material density in each disc appears to be constant with radius. In QSO emission-line profiles, the peak relative to adjacent continuum intensity increases with increasing logarithm of disc mass or maximum radius, on average.

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