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Intrinsic Absorption Properties in Active Galaxies Observed with the Far Ultraviolet Spectroscopic Explorer
Jay P. Dunn, D. Michael Crenshaw, S. B. Kraemer +1
In a continuing survey of active galactic nuclei observed by the Far Ultraviolet Spectroscopic Explorer, we provide a deeper analysis of intrinsic absorption features found in 35 o…
Tracing a Disk Wind in NGC 3516
T. J. Turner, J. N. Reeves, S. B. Kraemer +1
X-ray spectra of AGN often contain signatures indicative of absorption in multiple layers of gas whose ionization-state and covering fraction may vary with time. It has been unclea…
Probing the Ionization Structure of the Narrow Line Region in the Seyfert 1 Galaxy NGC 4151
S. B. Kraemer, H. R. Schmitt, D. M. Crenshaw
We present a study of the distribution of [O III] 5007 and [O II] 3727 emission in the Narrow Line Region (NLR) of the Seyfert 1 galaxy NGC 4151. While the NLR of NGC 4151 ex…
Spitzer/IRS Observations of Seyfert 1.8s and 1.9s: A Comparison with Seyfert 1s and Seyfert 2s
R. P. Deo, D. M. Crenshaw, S. B. Kraemer +4
We present Spitzer Space Telescope mid-infrared spectra of 12 Seyfert 1.8 and 1.9 galaxies over the 5-38 um region. We compare the spectral characteristics of this sample to those…
The Variable X-ray Spectrum of Markarian 766 - II. Time-Resolved Spectroscopy
T. J. Turner, L. Miller, J. N. Reeves +1
CONTEXT: The variable X-ray spectra of AGN systematically show steep power-law high states and hard-spectrum low states. The hard low state has previously been found to be a compon…
On the Effects of Dissipative Turbulence on the Narrow Emission-Line Ratios in Seyfert Galaxies
S. B. Kraemer, M. C. Bottorff, D. M. Crenshaw
We present a photoionization model study of the effects of micro-turbulence and dissipative heating on emission lines for number and column densities, elemental abundances, and ion…