NAOC Open IR
Piercing through Highly Obscured and Compton-thick AGNs in the Chandra Deep Fields. II. Are Highly Obscured AGNs the Missing Link in the Merger-triggered AGN–Galaxy Coevolution Models?
Li,Junyao1,2; Xue,Yongquan1,2; Sun,Mouyuan3; Brandt,William N.4,5,6; Yang,Guang4,5,7,8; Vito,Fabio9,10; Tozzi,Paolo11; Vignali,Cristian12,13; Comastri,Andrea13; Shu,Xinwen14; Fang,Guanwen15; Fan,Lulu1,2; Luo,Bin16,17,18; Chen,Chien-Ting19; Zheng,Xuechen20
2020-10-30
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume903Issue:1
AbstractAbstract By using a large, highly obscured ( ) active galactic nucleus (AGN) sample (294 sources at z?~?0–5) selected from detailed X-ray spectral analyses in the deepest Chandra?surveys, we explore distributions of these X-ray sources in various optical/infrared/X-ray color–color diagrams and their host-galaxy properties, aiming at characterizing the nuclear obscuration environment and the triggering mechanism of highly obscured AGNs. We find that the refined Infrared Array Camera (IRAC) color–color diagram fails to identify the majority of X-ray-selected, highly obscured AGNs, even for the most luminous sources with . Over 80% of our sources will not be selected as heavily obscured candidates using the flux ratio of and R???K?>?4.5 criteria, implying complex origins and conditions for the obscuring materials that are responsible for the heavy X-ray obscuration. The average star formation rate (SFR) of highly obscured AGNs is similar to that of stellar mass- (M*-) and z-controlled normal galaxies, while a lack of quiescent hosts is observed for the former. Partial correlation analyses imply that highly obscured AGN activity (traced by ) appears to be more fundamentally related to M*, and no dependence of ?on either M* or SFR is detected. Morphology analyses reveal that 61% of our sources have a significant disk component, while only ~27% of them exhibit irregular morphological signatures. These findings together point toward a scenario where secular processes (e.g., galactic-disk instabilities), instead of mergers, are most probable to be the leading mechanism that triggers accretion activities of X-ray-selected, highly obscured AGNs.
KeywordAGN host galaxies Active galaxies X-ray active galactic nuclei
DOI10.3847/1538-4357/abb6e7
Language英语
WOS IDIOP:0004-637X-903-1-abb6e7
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/62210
Collection中国科学院国家天文台
Corresponding AuthorLi,Junyao
Affiliation1.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, People’s Republic of China; lijunyao@mail.ustc.edu.cn, xuey@ustc.edu.cn
2.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, People’s Republic of China
3.Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, People’s Republic of China
4.Department of Astronomy & Astrophysics, 525 Davey Lab, The Pennsylvania State University, University Park, PA 16802, USA
5.Institute for Gravitation and the Cosmos, The Pennsylvania State University, University Park, PA 16802, USA
6.Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA
7.Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843-4242, USA
8.George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, TX 77843-4242, USA
9.Instituto de Astrofisica and Centro de Astroingenieria, Facultad de Fisica, Pontificia Universidad Catolica de Chile, Casilla 306, Santiago 22, Chile
10.Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, CAS, Beijing 100012, People’s Republic of China
11.Istituto Nazionale di Astrofisica (INAF)—Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, I-50125 Firenze Italy
12.Dipartimento di Fisica e Astronomia, Alma Mater Studiorum, Università degli Studi di Bologna, Via Gobetti 93/2, I-40129 Bologna, Italy
13.INAF—Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Gobetti 93/3, I-40129 Bologna, Italy
14.Department of Physics, Anhui Normal University, Wuhu, Anhui, 241000, People’s Republic of China
15.School of Mathematics and Physics, Anqing Normal University, Anqing 246133, People’s Republic of China
16.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People’s Republic of China
17.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, Jiangsu 210093, People’s Republic of China
18.Collaborative Innovation Center of Modern Astronomy and Space Exploration, Nanjing 210093, People’s Republic of China
19.Astrophysics Office, NASA Marshall Space Flight Center, ZP12, Huntsville, AL 35812, USA
20.Leiden Observatory, Leiden University, P.O. Box 9513, NL-2300 RA Leiden, The Netherlands
Recommended Citation
GB/T 7714
Li,Junyao,Xue,Yongquan,Sun,Mouyuan,等. Piercing through Highly Obscured and Compton-thick AGNs in the Chandra Deep Fields. II. Are Highly Obscured AGNs the Missing Link in the Merger-triggered AGN–Galaxy Coevolution Models?[J]. The Astrophysical Journal,2020,903(1).
APA Li,Junyao.,Xue,Yongquan.,Sun,Mouyuan.,Brandt,William N..,Yang,Guang.,...&Zheng,Xuechen.(2020).Piercing through Highly Obscured and Compton-thick AGNs in the Chandra Deep Fields. II. Are Highly Obscured AGNs the Missing Link in the Merger-triggered AGN–Galaxy Coevolution Models?.The Astrophysical Journal,903(1).
MLA Li,Junyao,et al."Piercing through Highly Obscured and Compton-thick AGNs in the Chandra Deep Fields. II. Are Highly Obscured AGNs the Missing Link in the Merger-triggered AGN–Galaxy Coevolution Models?".The Astrophysical Journal 903.1(2020).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li,Junyao]'s Articles
[Xue,Yongquan]'s Articles
[Sun,Mouyuan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li,Junyao]'s Articles
[Xue,Yongquan]'s Articles
[Sun,Mouyuan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li,Junyao]'s Articles
[Xue,Yongquan]'s Articles
[Sun,Mouyuan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.