Expansion velocities and kinematic ages of Compact Symmetric Objects

被引：16
|
作者：
Polatidis, A. G. [1 ]
机构：
[1] Joint Inst VLBI Europe, NL-7990 AA Dwingeloo, Netherlands
来源：
ASTRONOMISCHE NACHRICHTEN | 2009年 / 330卷 / 2-3期
关键词：
galaxies: active; radio continuum: galaxies; techniques: high angular resolution; RELATIVISTIC JETS; RADIO; GALAXIES;
D O I：
10.1002/asna.200811143
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The measurement of expansion velocities in Compact Symmetric Objects, and the calculation of their kinematic ages, showed that the age of these radio sources was of the order of a few hundred to a few thousand years. Further monitoring has proven this trait, but there are also indications of recurrent activity in some CSOs. However, there are many cases where accurate kinematic measurements are not easy to obtain. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：149 / 152
页数：4
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