2014ApJ...787...61L -
Astrophys. J., 787, 61 (2014/May-3)
Delving into X-ray obscuration of type 2 AGN, near and far.
LAMASSA S.M., YAQOOB T., PTAK A.F., JIA J., HECKMAN T.M., GANDHI P. and URRY C.M.
Abstract (from CDS):
Using self-consistent, physically motivated models, we investigate the X-ray obscuration in 19 Type 2 [O III] 5007 Å selected active galactic nuclei (AGNs), 9 of which are local Seyfert 2 galaxies and 10 of which are Type 2 quasar candidates. We derive reliable line-of-sight and global column densities for these objects, which is the first time this has been reported for an AGN sample; four AGNs have significantly different global and line-of-sight column densities. Five sources are heavily obscured to Compton-thick. We comment on interesting sources revealed by our spectral modeling, including a candidate "naked" Sy2. After correcting for absorption, we find that the ratio of the rest-frame, 2-10 keV luminosity (L_2-10 keV, in_) to L_[O III]_ is 1.54±0.49 dex which is essentially identical to the mean Type 1 AGN value. The Fe Kα luminosity is significantly correlated with L_[O III]_but with substantial scatter. Finally, we do not find a trend between L_2-10 keV, in_and global or line-of-sight column density, between column density and redshift, between column density and scattering fraction, or between scattering fraction and redshift.
Abstract Copyright:
∼
Journal keyword(s):
galaxies: active - galaxies: Seyfert - X-rays: general
Simbad objects:
21
Full paper
View the references in ADS
To bookmark this query, right click on this link: simbad:2014ApJ...787...61L and select 'bookmark this link' or equivalent in the popup menu