A systematic observational study of radio properties of H2O megamaser Seyfert-2 galaxies
文献类型：期刊论文
| 作者 | Liu, Z. W.1; Zhang, J. S.1; Henkel, C.2,3; Liu, J.4 ; Mueller, P.2; Wang, J. Z.5; Guo, Q.6; Wang, J.1; Li, J.5
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2017-04-01 |
| 卷号 | 466期号:2页码:1608-1624 |
| ISSN号 | 0035-8711 |
| 关键词 | masers galaxies: active galaxies: nuclei radio continuum: galaxies radio lines: galaxies |
| 英文摘要 | A systematic study is performed on radio properties of H2O megamaser host Seyfert 2 galaxies, through multiband radio continuum observations (at 11, 6.0, 3.6, 2.0 and 1.3 cm) with the Effelsberg 100-m radio telescope within a total time duration of 4 d. For comparison, a control Seyfert 2 galaxy sample without detected maser emission was also observed. Spectral indices were determined for those sources for which measurements exist at two adjacent bands assuming a power-law dependence S-nu proportional to nu(-alpha), where S is the flux density and nu is the frequency. Comparisons of the radio continuum properties between megamaser and non-masing Seyfert 2s show no difference in spectral indices. However, a difference in radio luminosity is statistically significant, i. e. the maser galaxies tend to have higher radio luminosities by a factor of 2-3 than the non-masing ones, commonly reaching values above a critical threshold of 10(29) erg s(-1) Hz(-1). This result confirms an earlier conclusion by Zhang et al., but is based on superior data with respect to the time interval within which the data were obtained, with respect to the observational facility (only one telescope used), and the number of frequency bands. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; BLACK-HOLE ; MASER EMISSION ; HOST GALAXIES ; X-RAY ; DISKS ; VARIABILITY ; CALIBRATORS ; PARAMETERS ; LUMINOSITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000398284600024 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/1433]  |
| 专题 | 星系宇宙学研究团组 新疆天文台_射电天文研究室 |
| 作者单位 | 1.Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Guangdong, Peoples R China 2.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 3.King Abdulaziz Univ, Dept Astron, POB 80203, Jeddah 21589, Saudi Arabia 4.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1-St, Urumqi 830011, Xinjiang, Peoples R China 5.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 6.Hunan Inst Human Sci & Technol, Loudi 417000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Z. W.,Zhang, J. S.,Henkel, C.,et al. A systematic observational study of radio properties of H2O megamaser Seyfert-2 galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,466(2):1608-1624. |
| APA | Liu, Z. W..,Zhang, J. S..,Henkel, C..,Liu, J..,Mueller, P..,...&Li, J..(2017).A systematic observational study of radio properties of H2O megamaser Seyfert-2 galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,466(2),1608-1624. |
| MLA | Liu, Z. W.,et al."A systematic observational study of radio properties of H2O megamaser Seyfert-2 galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 466.2(2017):1608-1624. |
入库方式： OAI收割
来源：新疆天文台
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