Properties of active galaxies at the extreme of eigenvector 1
文献类型：期刊论文
| 作者 | Sniegowska, M.1,2; Czerny, B.1; You, B.3,4; Panda, S.1,3; Wang, J. -M.5; Hryniewicz, K.3; Wildy, C.1 |
| 刊名 | Astronomy & astrophysics
 |
| 出版日期 | 2018-05-28 |
| 卷号 | 613页码:12 |
| ISSN号 | 1432-0746 |
| 关键词 | Quasars: emission lines Accretion, accretion disks |
| DOI | 10.1051/0004-6361/201730433 |
| 通讯作者 | Czerny, b.(bcz@camk.edu.pl) |
| 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 |
| WOS类目 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | EDP SCIENCES S A |
| WOS记录号 | WOS:000433276100001 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177517 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Czerny, B. |
| 作者单位 | 1.Polish Acad Sci, Ctr Theoret Phys, Al Lotnikow 32-46, PL-02668 Warsaw, Poland 2.Univ Warsaw Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland 3.Copernicus Astron Ctr, Bartycka 18, PL-00716 Warsaw, Poland 4.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China 5.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sniegowska, M.,Czerny, B.,You, B.,et al. Properties of active galaxies at the extreme of eigenvector 1[J]. Astronomy & astrophysics,2018,613:12. |
| APA | Sniegowska, M..,Czerny, B..,You, B..,Panda, S..,Wang, J. -M..,...&Wildy, C..(2018).Properties of active galaxies at the extreme of eigenvector 1.Astronomy & astrophysics,613,12. |
| MLA | Sniegowska, M.,et al."Properties of active galaxies at the extreme of eigenvector 1".Astronomy & astrophysics 613(2018):12. |
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来源：高能物理研究所
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