| Compact radio structure in the Seyfert nucleus of NGC 5929 | |
Su BM(苏步美)1,3 ; Muxlow, TWB1; Pedlar, A1; Holloway, AJ2; Steffen, W2; Kukula, MJ4; Mutel, RL5; Su, BM(苏步美)
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| 发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 1996-04-15 | |
| 卷号 | 279期号:4页码:1111-1119 |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI |
| 关键词 | Galaxies Galaxies Galaxies Individual Nuclei Seyfert Radio Continuum Ngc 5329 Galaxies |
| 摘要 | We present MERLIN and VLA radio measurements of the Seyfert galaxy NGC 5929 at 15, 8, 5, 1.6 and 0.4 GI-H. All measurements have subarcsecond angular resolution ranging from 0.6 arcsec at 0.4 GHz to 50 mas at 5 GHz, We confirm the triple structure reported in earlier studies. The weak central source of the triplet is almost certainly associated with the active nucleus. It has a flat spectral index and is unresolved even at 50-mas resolution, consistent with a synchrotron-self-absorbed core. The two components which straddle the core have sizes of order 10 pc and have steep spectral indices, and hence can be considered as small radio 'lobes'. Both of these components show evidence for low-frequency turnovers at 0.4 GHz, which we interpret as evidence for free-free absorption by ionized gas with an emission measure of similar to 10(5) pc cm(-6). As the north-eastern component shows greater free-free absorption than the south-western component, we propose that it is behind most of the narrow-line region (NLR) ionized gas, This implies that the nuclear collimated ejection is towards the observer in the south-west and away from the observer in the north-east. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0035-8711 |
| URL | 查看原文 |
| WOS记录号 | WOS:A1996UG55300011 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | NARROW-LINE REGION ; GALAXY NGC-5929 ; EMISSION ; DRIVEN ; SCALE ; LOBES |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4039 |
| 专题 | 其他 |
| 通讯作者 | Su, BM(苏步美) |
| 作者单位 | 1.Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL 2.Department of Physics & Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL 3.Yunnan Observatory, Science Academy of China, PO Box 110, Kunming, China 4.School of Chemical & Physical Sicences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF 5.Department of Physics and Astronomy of Iowa University, USA |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Su BM,Muxlow, TWB,Pedlar, A,et al. Compact radio structure in the Seyfert nucleus of NGC 5929[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,1996,279(4):1111-1119. |
| APA | Su BM.,Muxlow, TWB.,Pedlar, A.,Holloway, AJ.,Steffen, W.,...&Su, BM.(1996).Compact radio structure in the Seyfert nucleus of NGC 5929.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,279(4),1111-1119. |
| MLA | Su BM,et al."Compact radio structure in the Seyfert nucleus of NGC 5929".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 279.4(1996):1111-1119. |
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| Compact radio struct（968KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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