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M.E. Kaiser, H. Calvani (JHU), G.A. Kriss, K.R. Sembach (STScI), S.D. Friedman, W. Zheng (JHU), R.F. Green, M. Brotherton (NOAO), W.R. Oegerle, B. Woodgate (NASA/GSFC), J.B. Hutchings (NRC/HIA), J.M. Shull (Colorado), D.G. York (Chicago)
We present ultraviolet spectra of the z=0.0296 Seyfert\,1 galaxy Mrk\,290. 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)}. Our {\em FUSE} spectra exhibit broad line emission, narrow line emission, intrinsic absorption lines of O\,VI \lambda\lambda1032, 1038 and Lyman\,\beta intrinsic absorption.
ASCA observations of Mrk\,290 have been fit with O\,VII and O\,VIII absorption edges. However, the model fits (George et al. 2000; Reynolds 1997) have not provided as compelling evidence for the presence of a warm absorber as with other Seyfert 1 galaxies (ie. NGC\,3783, NCG\,3516). {\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. Our FUSE observations depict relatively narrow (~,100\,km\,s-1) absorption at a velocity of ~\,240\,km\,s-1 relative to the systemic velocity. We will present O\,VI and H column densities for the warm absorber along this sight line and compare our results with the X-ray data.
The {\em FUSE} observations were obtained for the Guaranteed Time Team. Financial support for these observations was provided by contract NAS5-32985.