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Study of Outflows in Luminous Quasars at Redshift similar to 0.4-0.8
Wang, J.1,2; Xu, D. W.2; Wei, J. Y.2
2018
Source PublicationASTROPHYSICAL JOURNAL
Volume852Issue:1
AbstractWe perform a systematic study of outflow in the narrow-line region (NLR) of active galactic nuclei (AGNs) at z similar to 0.4-0.8 based upon a large sample of similar to 900 quasars at z similar to 0.4-0.8. The sample is extracted from the Sloan Digital Sky Survey by mainly requiring that (1) the g-band magnitude is brighter than 19 mag and (2) the [O III]lambda 5007 emission line has a signal-to-noise ratio larger than 30. Profiles of multiple emission lines are modeled by a sum of several Gaussian functions. The spectral analysis allows us to identify (1) a prevalence of both [O III]lambda 5007 line blue asymmetry and bulk velocity blueshift of both [Ne III]lambda 3869 and [Ne III]lambda 3426 lines, when the [O II]lambda 3727 line is used as a reference. The velocity offset of the [O III]lambda 5007 line is, however, distributed around a value of zero, except for a few outliers. (2) Not only the significant [O III]lambda 5007 line asymmetry, but also the large bulk velocity offsets of [Ne III]lambda 3869 and [Ne V]lambda 3426 emission lines tend to occur in the objects with high L/L-Edd, which is considerably consistent with the conclusions based on local AGNs. With three M-BH estimation methods, the significance level of the trend is found to be better than 2.9 sigma, 3.2 sigma, and 1.8 sigma for [O III], [Ne III], and [Ne V], respectively. After excluding the role of radio jets, the revealed dependence of NLR gas outflow on L/L-Edd allows us to argue that the pressure caused by the wind/radiation launched/emitted from a central supermassive black hole is the most likely origin of the outflow in these distant quasars, which implies that the outflow in luminous AGNs up to z similar to 1 have the same origin.
SubtypeArticle
KeywordGalaxies: Active Galaxies: Nuclei Quasars: Emission Lines
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Natural Science Foundation of China(11473036 ; National Natural Science Foundation of China(11473036 ; 11773036) ; 11773036) ; National Natural Science Foundation of China(11473036 ; National Natural Science Foundation of China(11473036 ; 11773036) ; 11773036)
DOI10.3847/1538-4357/aa9d1b
WOS KeywordACTIVE GALACTIC NUCLEI ; NARROW-LINE REGION ; SUPERMASSIVE BLACK-HOLES ; RADIO-QUIET QUASARS ; DIGITAL SKY SURVEY ; DRIVEN DISK WINDS ; FE-II EMISSION ; SEYFERT-1 GALAXIES ; AGN FEEDBACK ; ELLIPTIC GALAXIES
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(11473036 ; National Natural Science Foundation of China(11473036 ; 11773036) ; 11773036) ; National Natural Science Foundation of China(11473036 ; National Natural Science Foundation of China(11473036 ; 11773036) ; 11773036)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000419178500004
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20343
Collection空间科学研究部
Affiliation1.Chinese Acad Sci, Key Lab Space Astron & Technol, Natl Astron Observ, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wang, J.,Xu, D. W.,Wei, J. Y.. Study of Outflows in Luminous Quasars at Redshift similar to 0.4-0.8[J]. ASTROPHYSICAL JOURNAL,2018,852(1).
APA Wang, J.,Xu, D. W.,&Wei, J. Y..(2018).Study of Outflows in Luminous Quasars at Redshift similar to 0.4-0.8.ASTROPHYSICAL JOURNAL,852(1).
MLA Wang, J.,et al."Study of Outflows in Luminous Quasars at Redshift similar to 0.4-0.8".ASTROPHYSICAL JOURNAL 852.1(2018).
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