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M.E. Kaiser (JHU), G.A. Kriss (STScI), K.R. Sembach, W.R. Oegerle, A.F. Davidsen, S.D. Friedman, W. Zheng (JHU), R.F Green, M. Brotherton (NOAO), B. Woodgate (NASA/GSFC), J.B. Hutchings (NRC/HIA), J.M. Shull (Colorado), D.G. York (Chicago)
We present ultraviolet spectra of the z=0.010 Seyfert\,1 galaxy NGC\,3783. For wavelengths extending from 920-1185\,Å~we have obtained high spectral resolution, ~,20\,km\,s-1, observations with the {\em Far Ultraviolet Spectroscopic Explorer (FUSE)}. These data are complemented by longer wavelength, 1145-3145\,Å, lower resolution Space Telescope Imaging Spectrograph (STIS) spectra. The {\em FUSE} and STIS observations were made within three months of one another. Our {\em FUSE} spectra exhibit both strong O\,VI emission and strong associated absorption lines of O\,VI \lambda\lambda1032, 1038 as well as Lyman\,\beta emission and associated absorption. Lyman\,\alpha, N\,V\lambda1240, Si\,IV\,\lambda1398, C\,IV \lambda1549, C\,III] \lambda1909 and Mg\,II\,\lambda2800 emission are detected in the low resolution STIS spectra.
NGC\,3783 is one of several Seyfert\,1 galaxies which exhibit deep O\,VII and O\,VIII absorption edges in the X-ray and intrinsic absorption in the ultraviolet. {\em FUSE} observations of O\,VI are important for characterizing the ionization state of this warm X-ray absorbing gas and providing a link between the lower ionization species, such as N\,V and C\,IV, seen in the ultraviolet and the higher ionization X-ray warm absorber. We will discuss the intrinsic absorption present in both our {\em FUSE} and STIS spectra. These kinematic components will be compared with the components present in the {\em Chandra} X-ray observations (Kaspi et al. 2000, ApJ) and the earlier {\em HST}/GHRS/FOS spectra (Crenshaw et al. 1999, ApJ).
The {\em FUSE} observations were obtained for the Guaranteed Time Team. Financial support for these observations was provided by contract NAS5-32985.