Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..348..525l&link_type=abstract
Astrophysics in the Far Ultraviolet: Five Years of Discovery with FUSE ASP Conference Series, Vol. 348, Proceedings of the Confe
Astronomy and Astrophysics
Astrophysics
Scientific paper
We present analysis of FUSE spectra from a sample of low-redshift soft X-ray selected AGN to investigate the role of the spectral energy distribution (SED) on the flux and profile of the O VI line. Theoretical arguments on the nature of photoionized gas and resonance-line acceleration, as well as observational evidence from a few objects, indicate that there may be significant dependence. The soft X-ray selected sample has several advantages for O VI line studies: these AGN have little X-ray absorption and are thus unlikely to be intrinsically reddened, a uniform X-ray selection allows an investigation of the breadth of the SED distribution, a range of spectral classes is represented, and a large amount of multiwavelength information has been compiled already. Data for sixteen objects were drawn from the archive, and data from another fifteen were obtained as part of a Cycle 4 survey proposal.
Casebeer Darrin
Grupe Dirk
Leighly Karen M.
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