VLBI observations of 21 extragalactic radio sources - Search for superluminal sources in the mid-southern hemisphere

被引：10
|
作者：
Hong, XY
Venturi, T
Wan, TS
Jiang, DR
Shen, ZQ
Liu, X
Nicolson, G
Umana, G
机构：
[1] CNR, Ist Radioastron, I-40129 Bologna, Italy
[2] Chinese Acad Sci, Shanghai Astron Observ, Beijing, Peoples R China
[3] Chinese Acad Sci, Urumqi Astron Stn, Beijing, Peoples R China
[4] Hartebeesthoek Radio Astron Observ, Krugersdorp, South Africa
[5] CNR, Ist Radioastron, Noto, Italy
来源：
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1999年 / 134卷 / 02期
关键词：
radio continuum : galaxies; galaxies : active; quasars : general;
D O I：
10.1051/aas:1999436
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the results of VLBI observations of 21 extragalactic radio sources carried out with an ad-hoc VLBI array including Shanghai, Urumqi: Noto, and Hartebeesthoek radio telescopes. Eleven sources are imaged, three of them for the first time with VLBI. Correlated flux densities of the remaining ten sources are given. From comparison with data taken at earlier epochs, the apparent superluminal motion is confirmed in four sources (0420-014. 0552+398, 1334-127 and 2345-167) and two more superluminal candidates (1504-166 and 2243-123) are found. The physical parameters of the four superluminal sources are derived.
引用
收藏
页码：201 / 210
页数：10
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