Ultra-steep-spectrum radio sources .1. 4C objects

被引：54
|
作者：
Chambers, KC
Miley, GK
VanBreugel, WJM
Huang, JS
机构：
[1] STERREWACHT LEIDEN, NL-2300 RA LEIDEN, NETHERLANDS
[2] LAWRENCE LIVERMORE NATL LAB, INST GEOPHYS & PLANETARY PHYS, LIVERMORE, CA 94550 USA
来源：
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 1996年 / 106卷 / 02期
关键词：
galaxies; active; distances and redshifts; jets; structure; polarization; radio continuum; surveys;
D O I：
10.1086/192337
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present radio total intensity and polarization images and complete optical identifications of a representative sample of ultra-steep-spectrum 4C objects. The radio morphologies are all resolved into double lobes or triples with cores. The radio polarization intensity morphologies are strikingly asymmetric. The optical identifications consist of galaxies in distant clusters (0.4 < z < 1.0), quasars, and high-redshift (z > 1) radio galaxies. We identify several (1 < z < 2) cluster candidates, and faint candidates for very high redshift radio galaxies.
引用
收藏
页码：215 / 246
页数：32
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