THE CORRELATED RADIO AND OPTICAL ASYMMETRIES OF POWERFUL RADIO GALAXIES

被引：41
|
作者：
LIU, RH
POOLEY, G
机构：
[1] Mullard Radio Astronomy Observatory, Cavendish Laboratory, Madingley Road, Cambridge
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1991年 / 253卷 / 04期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1093/mnras/253.4.669
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present radio continuum and polarization maps of four 'classical double' radio galaxies, overlaid on optical emission-line images. The sources (3C 247, 263.1, 280 and 299) are all small, powerful and distant (with D < 200 kpc, P178 > 10(26.8) W Hz-1 sr-1, 0.37 < z < 1.0). In three cases we find that the emission-line gas lies on that side of the radio source for which the depolarization is stronger, the hotspot closer to the core and the radio spectrum steeper. We discuss the origin of these features, and suggest that a non-symmetrical distribution of gas around the host galaxy could account for the observed asymmetries.
引用
收藏
页码：669 / 674
页数：6
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