Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.0745m&link_type=abstract
American Astronomical Society, HEAD meeting #9, #7.45; Bulletin of the American Astronomical Society, Vol. 38, p.357
Astronomy and Astrophysics
Astronomy
Scientific paper
We have assembled the integrated spectral energy distributions (SEDs) of a complete volume-limited sample of nearby Seyfert 2 galaxies. The data cover 15 photometric bands between the radio and hard X-ray. We find no correlation between overall SED shape and nuclear luminosity, suggesting that at non-X-ray frequencies the integrated light of the typical Seyfert 2 is dominated by the host galaxy. A comparison of the SEDs of nearby Seyfert 2s with those of absorbed AGNs in the Chandra Deep Field South (CDF-S) reveals no systematic differences between the properties of the two populations, despite the fact that many of the CDF-S sources appear to be normal in ground-based optical spectra. In our comparison, we have accounted for the way the luminosity function of a population is sample in a flux-limited survey like the CDF-S. Our results suggest that host-galaxy dilution - not some physical cause - is chiefly responsible for the normal optical appearance of distant absorbed AGNs.
Cardamone Carolin N.
Connelly Jennifer L.
Kay Laura E.
Moran Edward C.
Urry Claudia Megan
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