Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..599..963s&link_type=abstract
X-RAY ASTRONOMY: Stellar Endpoints,AGN, and the Diffuse X-ray Background. Edited by Nicholas E. White, Giuseppe Malaguti, and G
Astronomy and Astrophysics
Astronomy
2
Galactic Nuclei, Circumnuclear Matter, And Bulges, X-Ray Sources, X-Ray Bursts
Scientific paper
We have been searching for a correlation space that provides an optimal discrimination between the diverse classes of AGN. A space involving FWHM Hβ, the ratio of EW FeII/EW Hβ and soft X-ray spectral index shows the strongest discrimination and intercorrelation. It represents a synthesis of several correlations that have emerged in the past decade. We interpret the correlations as driven primarily by orientation and L/M ratio of the central source with an uncertain role for Fe abundance. .
Calvani Massimo
Marziani Paola
Sulentic Jack W.
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