European VLBI network observations of fourteen GHz-peaked-spectrum radio sources at 5 GHz
文献类型：期刊论文
| 作者 | Xiang, L.1 ; Reynolds, C.2; Strom, R. G.3; Dallacasa, D.4,5
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2006-08-01 |
| 卷号 | 454期号:3页码:729-740 |
| 关键词 | galaxies : active quasars : general radio continuum : galaxies |
| 英文摘要 | We present the results of EVN polarization observations of fourteen GHz-Peaked-Spectrum (GPS) radio sources at 5 GHz. These sources were selected from bright GPS source samples and we aimed at finding Compact Symmetric Objects (CSOs). We have obtained full polarization 5 GHz VLBI observations of 14 sources providing information on their source structure and spectral indices. The results show that two core-jet sources 1433-040 and DA193, out of 14 GPS sources, exhibit integrated fractional polarizations of 3.6% and 1.0% respectively. The other 12 sources have no clear detection of pc-scale polarization. The results confirm that the GPS sources generally have very low polarization at 5 GHz. The sources 1133+432, 1824+271 and 2121-014 are confirmed as CSOs. Three new CSOs 0914+114, 1518+046 and 2322-040 (tentative) have been classified on the basis of 5 GHz images and spectral indices. The sources 1333+589, 1751+278 and 2323+790 can be classified either as compact doubles, and then they are likely CSO candidates or core-jet sources; further observations are needed for an appropriate classification; 0554-026, 1433-040 and 1509+054 are core-jet sources. In addition, we estimate that a component in the jet of quasar DA193 has superluminal motion of 3.3 +/- 0.6 h(-1) c in 5.5 years. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | COMPACT SYMMETRIC OBJECTS ; OPTICAL-IDENTIFICATION STATUS ; HIGH-FREQUENCY PEAKERS ; STEEP-SPECTRUM ; CALIBRATOR SURVEY ; EVN OBSERVATIONS ; COMPLETE SAMPLE ; SOURCE CATALOG ; THICK AGN ; YOUNG |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000239121200010 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/813]  |
| 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.CAS, Urumqi Observ, Natl Astron Observ, Urumqi 830011, Peoples R China 2.Joint Inst VLBI Europe, NL-7990 AA Dwingeloo, Netherlands 3.ASTRON, NL-7990 AA Dwingeloo, Netherlands 4.Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy 5.INAF, Ist Radioastron, I-40129 Bologna, Italy |
| 推荐引用方式 GB/T 7714 | Xiang, L.,Reynolds, C.,Strom, R. G.,et al. European VLBI network observations of fourteen GHz-peaked-spectrum radio sources at 5 GHz[J]. ASTRONOMY & ASTROPHYSICS,2006,454(3):729-740. |
| APA | Xiang, L.,Reynolds, C.,Strom, R. G.,&Dallacasa, D..(2006).European VLBI network observations of fourteen GHz-peaked-spectrum radio sources at 5 GHz.ASTRONOMY & ASTROPHYSICS,454(3),729-740. |
| MLA | Xiang, L.,et al."European VLBI network observations of fourteen GHz-peaked-spectrum radio sources at 5 GHz".ASTRONOMY & ASTROPHYSICS 454.3(2006):729-740. |
入库方式： OAI收割
来源：新疆天文台
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