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Delving into X-Ray Obscuration of Type 2 AGN, Near and FarUsing self-consistent, physically motivated models, we investigate the X-ray obscuration in 19 Type 2 [O iii] 5007Å 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 (L2−10 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 K(alpha) luminosity is significantly correlated with L[O iii] but with substantial scatter. Finally, we do not find a trend between L2−10 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. Key words: galaxies: active - galaxies: Seyfert - X-rays: general
Document ID
20150023330
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Lamassa, Stephanie M.
(Yale Univ. New Haven, CT, United States)
Yaqoob, Tahir
(Maryland Univ. Baltimore County Baltimore, MD, United States)
Ptak, Andrew F.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Jia, Jianjun
(Johns Hopkins Univ. Baltimore, MD, United States)
Heckman, Timothy M.
(Johns Hopkins Univ. Baltimore, MD, United States)
Gandhi, Poshak
(Durham Univ. United Kingdom)
Urry, C. Meg
(Yale Univ. New Haven, CT, United States)
Date Acquired
December 18, 2015
Publication Date
May 20, 2014
Publication Information
Publication: The Astrophysical Journal, 787
Publisher: The American Astronomical Society
Volume: 787
Issue: 1
Subject Category
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN23248
Funding Number(s)
CONTRACT_GRANT: NNG06EO90A
Distribution Limits
Public
Copyright
Other
Keywords
DELVING INTO X-RAY OBSCURATION OF TYPE 2 AGN
NEAR AND FAR

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