NAOC Open IR
Ultradense Gas Tracked by Unshifted Broad Absorption Lines in a Quasar
Tian, Qiguo1,2; Shi, Xiheng1,2; Hao, Lei3; Zhou, Yipeng3; Li, Zhenzhen3; Jiang, Peng1,2; Wu, Shengmiao1,2; Yang, Chenwei1,2; Zhang, Shaohua1,2,4; Zhou, Hongyan1,2,5
2021-06-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume914Issue:1Pages:13
AbstractWe present a detailed analysis of the broad absorption line system in the quasar SDSS J122017.06+454941.1, which are clearly detected in hydrogen Lyman series and metal lines, such as C IV, Si IV, Si III, Al III, and C II, with a similar velocity as that of the broad emission lines. We reliably measured the column densities of H I, Al III, and C II, and obtained a low limit to Si IV and Si III. With the help of the photoionization simulations, we found that the absorption gas has a hydrogen number density n(H) approximate to 10(11.03) cm(-3) and a hydrogen column density N-H approximate to 10(21)(.0) cm(-2), and is exposed to the radiation with an ionization parameter U approximate to 10(-1.)(25), and thus located the absorber at similar to 0.3 pc from the central supermassive black hole, remarkably similar to the radius of the broad-line region (BLR; 0.17-0.84 pc as estimated by the luminosity-radius relation) of the quasar. It is likely that our line of sight may happen to intercept the low-column part of the BLR with a high density similar to that of the inferred value of the absorber. We suggest that detection of Al III absorption line doublet in moderate quality quasar spectra could be a good indicator of dense gases, provided that the neutral hydrogen column density of the absorber is 15.4 less than or similar to log N-H 1 (cm(-2)) less than or similar to 16.5.
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation
DOI10.3847/1538-4357/abf82d
WOS KeywordACTIVE GALACTIC NUCLEI ; X-RAY ; HST/COS OBSERVATIONS ; COLUMN DENSITIES ; SCALE OUTFLOW ; EMISSION-LINE ; DRIVEN WINDS ; AGN FEEDBACK ; LUMINOSITY ; SPECTRA
Language英语
Funding ProjectNational Natural Science Foundation of China[NSFC 11503023] ; Shanghai Natural Science Foundation[19ZR1462500] ; Shanghai Natural Science Foundation[14ZR1444100]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Shanghai Natural Science Foundation ; Shanghai Natural Science Foundation
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000659270100001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/77436
Collection中国科学院国家天文台
Corresponding AuthorTian, Qiguo
Affiliation1.Polar Res Inst China, 451 Jinqiao Rd, Shanghai 200136, Peoples R China
2.Polar Res Inst China, MNR Key Lab Polar Sci, 451 Jinqiao Rd, Shanghai 200136, Peoples R China
3.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
4.Shanghai Normal Univ, Shanghai Key Lab Astrophys, Shanghai 200234, Peoples R China
5.Univ Sci & Technol China, Chinese Acad Sci, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Tian, Qiguo,Shi, Xiheng,Hao, Lei,et al. Ultradense Gas Tracked by Unshifted Broad Absorption Lines in a Quasar[J]. ASTROPHYSICAL JOURNAL,2021,914(1):13.
APA Tian, Qiguo.,Shi, Xiheng.,Hao, Lei.,Zhou, Yipeng.,Li, Zhenzhen.,...&Zhou, Hongyan.(2021).Ultradense Gas Tracked by Unshifted Broad Absorption Lines in a Quasar.ASTROPHYSICAL JOURNAL,914(1),13.
MLA Tian, Qiguo,et al."Ultradense Gas Tracked by Unshifted Broad Absorption Lines in a Quasar".ASTROPHYSICAL JOURNAL 914.1(2021):13.
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
[Tian, Qiguo]'s Articles
[Shi, Xiheng]'s Articles
[Hao, Lei]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tian, Qiguo]'s Articles
[Shi, Xiheng]'s Articles
[Hao, Lei]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tian, Qiguo]'s Articles
[Shi, Xiheng]'s Articles
[Hao, Lei]'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.