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| Paper: |
Intrinsic UV Absorption in the Seyfert 1 Galaxy NGC 3783: FUSE and HST/STIS Results |
| Volume: |
290, Active Galactic Nuclei: from Central Engine to Host Galaxy |
| Page: |
205 |
| Authors: |
Gabel, J. R.; Kraemer, S. B.; Crenshaw, D. M. |
| Abstract: |
We present results in the UV and far-UV, as part of an intensive multiwavelength monitoring campaign designed to study the intrinsic absorption in the Seyfert 1 galaxy, NGC 3783. We have combined 18 HST/STIS echelle grating observations and 5 FUSE observations to produce a high signal-to-noise averaged spectrum that samples numerous lines spanning a large range in ionization states. Analysis of the Lyman lines reveals a complex absorption geometry in the UV absorption. The individual covering factors of the continuum and broad line region emission sources are deconvolved. We find evidence for variable covering factor with velocity in the individual absorption components, with a decrease in the wings of the profiles. The H I covering factor profiles are used to derive ionic column densities for all available lines. These results are used to constrain the physical conditions in the absorbers and investigate the complex absorption geometry in NGC 3783. |
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