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ACTIVE GALACTIC NUCLEI WITH DOUBLE-PEAKED NARROW LINES: ARE THEY DUAL ACTIVE GALACTIC NUCLEI?
Wang JM(王建民); Chen YM(陈燕梅); Hu C(胡晨); Zhang S(张澍); Wang, JM; Chen, YM; Hu, C; Mao, WM; Zhang, S; Bian, WH
2009
发表期刊ASTROPHYSICAL JOURNAL LETTERS
卷号705期号:1页码:L76-L80
通讯作者[Wang, Jian-Min ; Chen, Yan-Mei ; Hu, Chen ; Zhang, Shu] Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Wang, Jian-Min] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China ; [Chen, Yan-Mei] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China ; [Mao, Wei-Ming] Chinese Acad Sci, Natl Astron Observ, Beijing 100020, Peoples R China ; [Bian, Wei-Hao] Nanjing Normal Univ, Dept Phys, Nanjing 210097, Peoples R China ; [Bian, Wei-Hao] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210097, Peoples R China
文章类型Article
摘要Double-peaked [O III] profiles in active galactic nuclei (AGNs) may provide evidence for the existence of dual AGNs, but a good diagnostic for selecting them is currently lacking. Starting from similar to 7000 active galaxies in Sloan Digital Sky Survey DR7, we assemble a sample of 87 type 2 AGNs with double-peaked [O III] profiles. The nuclear obscuration in the type 2 AGNs allows us to determine redshifts of host galaxies through stellar absorption lines. We typically find that one peak is redshifted and another is blueshifted relative to the host galaxy. We find a strong correlation between the ratios of the shifts and the double peak fluxes. The correlation can be naturally explained by the Keplerian relation predicted by models of co-rotating dual AGNs. The current sample statistically favors that most of the [O III] double-peaked sources are dual AGNs and disfavors other explanations, such as rotating disk and outflows. These dual AGNs have a separation distance at similar to 1 kpc scale, showing an intermediate phase of merging systems. The appearance of dual AGNs is about similar to 10(-2), impacting on the current observational deficit of binary supermassive black holes with a probability of similar to 10(-4) (Boroson & Lauer).
关键词black hole physics galaxies: evolution
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
DOI10.1088/0004-637X/705/1/L76
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000270927900017
引用统计
被引频次:78[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240298
专题粒子天体物理中心
实验物理中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Wang JM,Chen YM,Hu C,et al. ACTIVE GALACTIC NUCLEI WITH DOUBLE-PEAKED NARROW LINES: ARE THEY DUAL ACTIVE GALACTIC NUCLEI?[J]. ASTROPHYSICAL JOURNAL LETTERS,2009,705(1):L76-L80.
APA 王建民.,陈燕梅.,胡晨.,张澍.,Wang, JM.,...&Bian, WH.(2009).ACTIVE GALACTIC NUCLEI WITH DOUBLE-PEAKED NARROW LINES: ARE THEY DUAL ACTIVE GALACTIC NUCLEI?.ASTROPHYSICAL JOURNAL LETTERS,705(1),L76-L80.
MLA 王建民,et al."ACTIVE GALACTIC NUCLEI WITH DOUBLE-PEAKED NARROW LINES: ARE THEY DUAL ACTIVE GALACTIC NUCLEI?".ASTROPHYSICAL JOURNAL LETTERS 705.1(2009):L76-L80.
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