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The Origin of Fe II Emission in AGN
J. A. Baldwin, G. J. Ferland, K. T. Korista +2
We used a very large set of models of broad emission line (BEL) clouds in AGN to investigate the formation of the observed Fe II emission lines. We show that photoionized BEL cloud…
Iron Abundance Diagnostics in High-Redshift QSOs
Michael R. Corbin, Kirk T. Korista, Nalaka Kodituwakku +1
The abundance of alpha-process elements such as magnesium and carbon relative to iron measured from the broad emission lines of QSOs can serve as a diagnostic of the star formation…
X-ray/UV Campaign on the Mrk 279 AGN Outflow: Constraining Inhomogeneous Absorber Models
Nahum Arav, Jelle Kaastra, Gerard A. Kriss +3
We investigate the applicability of inhomogeneous absorber models in the formation of AGN outflow absorption-troughs. The models we explore are limited to monotonic gradients of ab…
Is the slope of the intrinsic Baldwin effect constant?
M. R. Goad, K. T. Korista, C. Knigge
We investigate the relationship between emission-line strength and continuum luminosity in the best-studied nearby Seyfert 1 galaxy NGC5548. Our analysis of 13 years of ground-base…
What the Optical Recombination Lines Can Tell Us About the Broad Line Regions of Active Galactic Nuclei
Kirk T. Korista, Michael R. Goad
We investigate the effect of a global change in the ionizing continuum level on the behavior of the strong optical broad emission-lines seen in spectra of the nuclear emission-line…