Properties of active galaxies at the extreme of Eigenvector 1
文献类型：期刊论文
| 作者 | Wang JM(王建民) ; Wildy, C; Hryniewicz, K; Wang, JM; a, S; P; You, B; Czerny, B; Sniegowska, M
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| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2018 |
| 卷号 | 613页码:A38 |
| 关键词 | quasars: emission lines accretion, accretion disks |
| ISSN号 | 1432-0746 |
| DOI | 10.1051/0004-6361/201730433 |
| 文献子类 | Article |
| 英文摘要 | Context. Eigenvector 1 (EV1) is the formal parameter which allows the introduction of some order in the properties of the unobscured type 1 active galaxies. Aims. We aim to understand the nature of this parameter by analyzing the most extreme examples of quasars with the highest possible values of the corresponding eigenvalues R-Fe. Methods. We selected the appropriate sources from the Sloan Digital Sky Survey (SDSS) and performed detailed modeling, including various templates for the Fe II pseudo-continuum and the starlight contribution to the spectrum. Results. Out of 27 sources with R-Fe larger than 1.3 and with the measurement errors smaller than 20% selected from the SDSS quasar catalog, only six sources were confirmed to have a high value of R-Fe, defined as being above 1.3. All other sources have an R-Fe of approximately 1. Three of the high R-Fe objects have a very narrow H beta line, below 2100 km s(-1) but three sources have broad lines, above 4500 km s(-1), that do not seem to form a uniform group, differing considerably in black hole mass and Eddington ratio; they simply have a very similar EW([OIII]5007) line. Therefore, the interpretation of the EV1 remains an open issue. |
| WOS关键词 | DIGITAL SKY SURVEY ; EMISSION-LINE PROPERTIES ; FE-II EMISSION ; GALACTIC NUCLEI ; BLACK-HOLE ; CORRELATION SPACE ; QUASAR SPECTRA ; SAMPLE ; EXTINCTION ; ACCRETION |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000433276100001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285949]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Wang JM,Wildy, C,Hryniewicz, K,et al. Properties of active galaxies at the extreme of Eigenvector 1[J]. ASTRONOMY & ASTROPHYSICS,2018,613:A38. |
| APA | 王建民.,Wildy, C.,Hryniewicz, K.,Wang, JM.,a, S.,...&Sniegowska, M.(2018).Properties of active galaxies at the extreme of Eigenvector 1.ASTRONOMY & ASTROPHYSICS,613,A38. |
| MLA | 王建民,et al."Properties of active galaxies at the extreme of Eigenvector 1".ASTRONOMY & ASTROPHYSICS 613(2018):A38. |
入库方式： OAI收割
来源：高能物理研究所
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