Detection of proper motion in OQ 208?

被引：5
|
作者：
Stanghellini, C
Liu, X
Dallacasa, D
Bondi, M
机构：
[1] CNR, Ist Radioastron, I-96017 Noto, SR, Italy
[2] Chinese Acad Sci, NAO, Urumqi Astron Observ, Urumqi, Peoples R China
[3] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy
[4] CNR, Ist Radioastron, I-40129 Bologna, Italy
来源：
NEW ASTRONOMY REVIEWS | 2002年 / 46卷 / 2-7期
关键词：
galaxies : evolution; galaxies; individual; (Mkn; 668; OQ; 208); galaxies : nuclei; radio continuum : galaxies;
D O I：
10.1016/S1387-6473(01)00195-6
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report on an ongoing project aimed to detect the separation speed of the two hot-spots of the Compact Symmetric Object OQ208. Comparing images at 8.4 GHz taken in 6 epochs between 1994 and 1997 we obtain an estimate of 0.061 +/- 0.024 mas/year for the relative motion between the two outer and compact components of the radio source, and a strong upper limit of 0.13 mas/year. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：287 / 289
页数：3
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