FeII Emission from Active Galactic Nuclei: Iron Project Atomic Data and Exact Radiative Transfer

Details FeII Emission from Active Galactic Nuclei: Iron Project Atomic Data and Exact Radiative Transfer FeII Emission from Active Galactic Nuclei: Iron Project Atomic Data and Exact Radiative Transfer

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.9807s&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #98.07; Bulletin of the American Astronomical Society, Vol. 28, p.1405

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We have calculated theoretical Feii emission line strengths for Active Galactic Nuclei Broad-Line Regions using atomic data from the Iron Project and an exact treatment of radiative transfer. The Feii atomic model consists of 825 fine-structure levels and includes approximately 1.5* 10(4) radiative transitions. The coupled equations of radiative transfer and statistical equilibrium were solved with a local approximate lambda operator technique, and all three previously considered excitation mechanisms for the Feii emission, continuum fluorescence, collisional excitation, and self-fluorescence among the Feii lines, were included within the framework of exact radiative transfer. In this initial work, the radiative transfer solutions were obtained in photoionized cloud models computed with traditional methods.

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