NAOC Open IR
Ultradense Gas at the Dusty Torus Scale in a Partially Obscured Quasar
Li, Zhenzhen1; Zhou, Hongyan2,3; Hao, Lei1; Shi, Xiheng2; Zhang, Shaohua2; Ji, Tuo2; Sun, Luming3; Dai, Xuejie2
2020-09-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume900Issue:1Pages:11
AbstractWe present detailed studies of the partially obscured quasar 2MASS J151653.23+190048.2 with continuous broadband spectrophotometry from near-infrared (NIR) through optical to ultraviolet (UV). The NIR and optical spectra show strong broad emission lines, while the UV spectrum is dominated by a set of rich intermediate-width emission lines (IELs). These IELs, unshifted with respect to the quasar systemic velocity measured by narrow emission lines, share a common profile of about 1900 n FWHM, in contrast to the Balmer and Paschen broad emission lines of FWHM similar to 6300 km s(-1) observed in the optical and NIR. The intermediate width of these lines indicates that the emitting gas may come from the dusty torus region. However, the observed peculiar IEL intensity ratios, such as Nv lambda 1240/Ly alpha, indicate that the emitting gas has a very high density, up to similar to 10(13) cm(-3). Such a high density is unusual for gas around the dusty torus region, except that we consider mechanisms such as shocks that can produce local ultradense gas. We speculate that these emission lines could originate from the shock region, possibly induced by the quasar outflow colliding with the inner wall of the dusty torus. If true, this may give us an opportunity to peep at the quasar outflows at the scale of the dusty torus that have so far been elusive due to the limited resolving powers of existing facilities.
Funding OrganizationNational Science Foundation of China ; National Science Foundation of China ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance
DOI10.3847/1538-4357/aba9da
WOS KeywordACTIVE GALACTIC NUCLEI ; INTERMEDIATE-LINE REGION ; BLACK-HOLE MASS ; RADIUS-LUMINOSITY RELATIONSHIP ; INFRARED EXTINCTION LAW ; HOST-GALAXY STARLIGHT ; SKY SURVEY ; EMISSION ; NARROW ; OUTFLOW
Language英语
Funding ProjectNational Science Foundation of China[U1831205] ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences[XDB 09000000] ; Special Fund for Astronomy from the Ministry of Finance
Funding OrganizationNational Science Foundation of China ; National Science Foundation of China ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; National Science Foundation of China ; National Science Foundation of China ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Strategic Priority Research Program "The Emergence of Cosmological Structures", National Astronomical Observatories, Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000566131700001
PublisherIOP PUBLISHING LTD
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82134
Collection中国科学院国家天文台
Corresponding AuthorLi, Zhenzhen
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China
2.Polar Res Inst China, Jinqiao Rd 451, Shanghai 200136, Peoples R China
3.Univ Sci & Technol China, Dept Astron, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhenzhen,Zhou, Hongyan,Hao, Lei,et al. Ultradense Gas at the Dusty Torus Scale in a Partially Obscured Quasar[J]. ASTROPHYSICAL JOURNAL,2020,900(1):11.
APA Li, Zhenzhen.,Zhou, Hongyan.,Hao, Lei.,Shi, Xiheng.,Zhang, Shaohua.,...&Dai, Xuejie.(2020).Ultradense Gas at the Dusty Torus Scale in a Partially Obscured Quasar.ASTROPHYSICAL JOURNAL,900(1),11.
MLA Li, Zhenzhen,et al."Ultradense Gas at the Dusty Torus Scale in a Partially Obscured Quasar".ASTROPHYSICAL JOURNAL 900.1(2020):11.
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