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| European VLBI network observations of fourteen GHz-peaked-spectrum radio sources at 5 GHz | |
Xiang, L.1 ; Reynolds, C.2; Strom, R. G.3; Dallacasa, D.4,5
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| 2006-08-01 | |
| Source Publication | ASTRONOMY & ASTROPHYSICS
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| Volume | 454Issue:3Pages:729-740 |
| Contribution Rank | 1 |
| Abstract | 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. |
| Keyword | Galaxies : Active Quasars : General Radio Continuum : Galaxies |
| Subtype | Article |
| DOI | 10.1051/0004-6361:20053885 |
| WOS Headings | Science & Technology ; Physical Sciences |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | COMPACT SYMMETRIC OBJECTS ; OPTICAL-IDENTIFICATION STATUS ; HIGH-FREQUENCY PEAKERS ; STEEP-SPECTRUM ; CALIBRATOR SURVEY ; EVN OBSERVATIONS ; COMPLETE SAMPLE ; SOURCE CATALOG ; THICK AGN ; YOUNG |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000239121200010 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/813 |
| Collection | 射电天文研究室_星系宇宙学研究团组 射电天文研究室 |
| Affiliation | 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 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation 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. |
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| File Name/Size | DocType | Version | Access | License | ||
| European VLBI networ（564KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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