Statistics of UV Absorption in Seyfert 1 Galaxies

Details Statistics of UV Absorption in Seyfert 1 Galaxies Statistics of UV Absorption in Seyfert 1 Galaxies

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.7804c&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #78.04; Bulletin of the American Astronomical Society, Vol. 29, p.1334

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a study of all of the UV spectra of Seyfert 1 galaxies available from the Hubble Space Telescope Data Archives. We estimate the frequency of Seyfert 1 galaxies that show intrinsic UV absorption, and the covering factor in the line of sight for individual objects, to determine a lower limit to the global covering factor. We also investigate the evidence for variability in the equivalent widths and radial velocity coverage of the absorption components. For the Seyferts observed by both HST and ASCA, we have determined the UV and X-ray column densities to investigate the connection between the intrinsic UV and X-ray warm absorbers.

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