AGN SEDs and the Big Blue Bump

Details AGN SEDs and the Big Blue Bump AGN SEDs and the Big Blue Bump

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.9206s&link_type=abstract

American Astronomical Society Meeting 204, #92.06; Bulletin of the American Astronomical Society, Vol. 36, p.824

Astronomy and Astrophysics

Astronomy

Scientific paper

We have constructed SEDs of 17 AGNs with quasi-simultaneous spectrophotometry from 900-9000Å (rest frame), using FUSE, HST and KPNO. Taking advantage of the short-wavelength coverage, we are able to study the big blue bump in detail. A wavelength break around 1000Å is seen for most objects, but we do not see a correlation between the far ultraviolet spectral index and the black hole mass, as expected by some accretion disk models. We have also compared our sample with the disk models of different black hole mass, Eddington ratio, and disk inclination etc., and argue that intrinsic reddening as well as Comptonization can strongly bias the observed FUV spectral index.
This work is based on data obtained for the Guaranteed Time Team by the NASA-CNES-CSA FUSE mission operated by the Johns Hopkins University. Financial support to U. S. participants has been provided by NASA contract NAS5-32985 and NAS5-26555.

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