On the nature of Seyfert galaxies with high [O III] lambda 5007 blueshifts
文献类型：期刊论文
| 作者 | Komossa, S.1; Xu, D.2 ; Zhou, H.1; Storchi-Bergmann, T.3; Binette, L.4,5
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2008-06-20 |
| 卷号 | 680期号:2页码:926-938 |
| 关键词 | galaxies : active galaxies : evolution galaxies : individual (SBS 0919+515, SDSS j115533.50+010730.4, RX j01354-0043, NGC 450-86, SDSS j032606.75+011429.9, IRAS 11598-0112, SDSS j171828.99+573422.3, PG 1244+026, RX j09132+3658) galaxies : Seyfert quasars : emission lines |
| 英文摘要 | We have studied the properties of Seyfert galaxies with high [O III] lambda 5007 blueshifts ("blue outliers''), originally identified because of their strong deviation from the M-BH-sigma relation of normal, narrow-line Seyfert 1 (NLS1) and broad-line Seyfert 1 (BLS1) galaxies. These blue outliers turn out to be important test beds for models of the narrow-line region (NLR), for mechanisms of driving large-scale outflows, for links between NLS1 galaxies and radio galaxies, and for orientation- dependent NLS1 models. We report the detection of a strong correlation of line blueshift with ionization potential in each galaxy, including the measurement of coronal lines with radial velocities up to 500-1000 km s(-1), and we confirm a strong correlation between [O III] blueshift and line width. All [O III] blue outliers have narrow widths of their broad Balmer lines and high Eddington ratios. While the presence of nonshifted low-ionization lines signifies the presence of a classical outer quiescent NLR in blue outliers, we also report the absence of any second, nonblueshifted [O III] component from a classical inner NLR. These results place tight constraints on NLR models. We favor a scenario in which the NLR clouds are entrained in a decelerating wind, which explains the strong stratification and the absence of a zero-blueshift inner NLR of blue outliers. The origin of the wind remains speculative at this time (collimated radio plasma, thermal winds, or radiatively accelerated clouds). It is perhaps linked to the high Eddington ratios of blue outliers. Similar, less powerful winds could be present in all Seyfert galaxies, but would generally only affect the coronal line region (CLR), or level off even before reaching the CLR. Similarities between blue outliers in NLS1 galaxies and (compact) radio sources are briefly discussed. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000256752400008 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7375]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Max Planck Inst Extraterr Phys, D-85748 Garching, Germany 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil 4.Univ Laval, Dept Phys Genie Phys & Opt, Quebec City, PQ G1K 7P4, Canada 5.Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico |
| 推荐引用方式 GB/T 7714 | Komossa, S.,Xu, D.,Zhou, H.,et al. On the nature of Seyfert galaxies with high [O III] lambda 5007 blueshifts[J]. ASTROPHYSICAL JOURNAL,2008,680(2):926-938. |
| APA | Komossa, S.,Xu, D.,Zhou, H.,Storchi-Bergmann, T.,&Binette, L..(2008).On the nature of Seyfert galaxies with high [O III] lambda 5007 blueshifts.ASTROPHYSICAL JOURNAL,680(2),926-938. |
| MLA | Komossa, S.,et al."On the nature of Seyfert galaxies with high [O III] lambda 5007 blueshifts".ASTROPHYSICAL JOURNAL 680.2(2008):926-938. |
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来源：国家天文台
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