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BAT AGN Spectroscopic Survey. V. X-Ray Properties of the Swift/BAT 70-month AGN Catalog

Ricci, C. and Trakhtenbrot, B. and Koss, M. J. and Ueda, Y. and Del Vecchio, I. and Treister, E. and Schawinski, K. and Paltani, S. and Oh, K. and Lamperti, I. and Berney, S. and Gandhi, P. and Ichikawa, K. and Bauer, F. E. and Ho, L. C. and Asmus, D. and Beckmann, V. and Soldi, S. and Baloković, M. and Gehrels, N. and Markwardt, C. B. (2017) BAT AGN Spectroscopic Survey. V. X-Ray Properties of the Swift/BAT 70-month AGN Catalog. Astrophysical Journal Supplement Series, 233 (2). Art. No. 17. ISSN 1538-4365.

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Hard X-ray (≥10 keV) observations of active galactic nuclei (AGNs) can shed light on some of the most obscured episodes of accretion onto supermassive black holes. The 70-month Swift/BAT all-sky survey, which probes the 14–195 keV energy range, has currently detected 838 AGNs. We report here on the broadband X-ray (0.3–150 keV) characteristics of these AGNs, obtained by combining XMM-Newton, Swift/XRT, ASCA, Chandra, and Suzaku observations in the soft X-ray band (⩽10 keV) with 70-month averaged Swift/BAT data. The nonblazar AGNs of our sample are almost equally divided into unobscured (N_H < 10^(22) cm^(-2)) and obscured (N_H ⩾ 10^(22) cm^(-2)) AGNs, and their Swift/BAT continuum is systematically steeper than the 0.3–10 keV emission, which suggests that the presence of a high-energy cutoff is almost ubiquitous. We discuss the main X-ray spectral parameters obtained, such as the photon index, the reflection parameter, the energy of the cutoff, neutral and ionized absorbers, and the soft excess for both obscured and unobscured AGNs.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Ricci, C.0000-0001-5231-2645
Trakhtenbrot, B.0000-0002-3683-7297
Koss, M. J.0000-0002-7998-9581
Ueda, Y.0000-0001-7821-6715
Del Vecchio, I.0000-0001-8706-2252
Schawinski, K.0000-0001-5464-0888
Paltani, S.0000-0002-8108-9179
Oh, K.0000-0002-5037-951X
Lamperti, I.0000-0003-3336-5498
Gandhi, P.0000-0003-3105-2615
Ichikawa, K.0000-0002-4377-903X
Bauer, F. E.0000-0002-8686-8737
Ho, L. C.0000-0001-6947-5846
Asmus, D.0000-0003-0220-2063
Beckmann, V.0000-0002-2778-8569
Baloković, M.0000-0003-0476-6647
Markwardt, C. B.0000-0001-9803-3879
Additional Information:© 2017 The American Astronomical Society. Received 2016 November 10; revised 2017 August 31; accepted 2017 September 10; published 2017 December 5. This work is dedicated to the memory of our friend and collaborator Neil Gehrels. We acknowledge the work that the Swift/BAT team has done to make this project possible. We thank the anonymous referee for the prompt report that helped us improve the quality of the manuscript. We thank Taro Shimizu and Chin-Shin Chang for valuable discussion and for their help with the manuscript. This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. This work is sponsored by the Chinese Academy of Sciences (CAS), through a grant to the CAS South America Center for Astronomy (CASSACA) in Santiago, Chile. We acknowledge financial support from the CONICYT-Chile grants "EMBIGGEN" Anillo ACT1101 (C.R., E.T.), FONDECYT 1141218 (C.R.), FONDECYT 1160999 (E.T.), Basal-CATA PFB–06/2007 (C.R., E.T.), the China-CONICYT fund (C.R.), the Swiss National Science Foundation (grants PP00P2_138979 and PP00P2_166159, K.S.; grant 200021_157021, K.O.), the Swiss National Science Foundation (SNSF) through the Ambizione fellowship grant PZ00P2 154799/1 (M.K.), the National Key R&D Program of China grant No. 2016YFA0400702 (LH), the National Science Foundation of China grants No. 11473002 and 1721303 (LH), the European Union's Seventh Framework program under grant agreement 337595 (ERC Starting Grant, "CoSMass"; I.D.). Part of this work was carried out while C.R. was Fellow of the Japan Society for the Promotion of Science (JSPS) at Kyoto University. This work was partly supported by the Grant-in-Aid for Scientific Research 17K05384 (Y.U.) from the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT). This research has made use of the Tartarus (version 3.1) database, created by Paul O'Neill and Kirpal Nandra at Imperial College London and Jane Turner at NASA/GSFC. This publication made use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. This research made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has made use of: the SIMBAD database, operated at CDS, Strasbourg, France (Wenger et al. 2000); the Aladin sky atlas, developed at CDS, Strasbourg Observatory, France (Bonnarel et al. 2000; Boch & Fernique 2014); Astropy, a community-developed core Python package for Astronomy (Astropy Collaboration et al. 2013); TOPCAT (Taylor 2005). Facilities: AKARI - , ASCA - , BeppoSAX - , Chandra - , GALEX - , IRAS - , Suzaku - , Swift - , XMM-Newton - , WISE. -
Funding AgencyGrant Number
Chinese Academy of SciencesUNSPECIFIED
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)Anillo ACT1101
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1141218
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1160999
Swiss National Science FoundationPP00P2_138979
Swiss National Science FoundationPP00P2_166159
Swiss National Science Foundation200021_157021
Swiss National Science FoundationPZ00P2 154799/1
Ministry of Science and Technology (China)2016YFA0400702
National Science Foundation of China11473002
National Science Foundation of China1721303
European Research Council (ERC)337595
Japan Society for the Promotion of Science (JSPS)UNSPECIFIED
Ministry of Education, Culture, Sports, Science and Technology (MEXT)17K05384
Subject Keywords:galaxies: active – galaxies: Seyfert – quasars: general – X-rays: diffuse background – X-rays: general
Issue or Number:2
Record Number:CaltechAUTHORS:20171206-080317236
Persistent URL:
Official Citation:C. Ricci et al 2017 ApJS 233 17
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:83719
Deposited By: Tony Diaz
Deposited On:06 Dec 2017 21:29
Last Modified:03 Oct 2019 19:09

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