VLBI OBSERVATIONS OF A COMPLETE SAMPLE OF RADIO GALAXIES V-3C-346 AND 4C-31.04 - 2 UNUSUAL COMPACT STEEP-SPECTRUM SOURCES

被引：30

作者：

COTTON, WD

FERETTI, L

GIOVANNINI, G

VENTURI, T

LARA, L

MARCAIDE, J

WEHRLE, AE

机构：

[1] CNR, IST RADIOASTRON, I-40129 BOLOGNA, ITALY

[2] UNIV BOLOGNA, DIPARTIMENTO ASTRON, I-40100 BOLOGNA, ITALY

[3] CSIC, INST ASTROFIS ANDALUCIA, E-18080 GRANADA, SPAIN

[4] UNIV VALENCIA, DEPT ASTRON, E-46100 BURJASSOT, SPAIN

[5] CALTECH, CTR INFRARED PROC & ANAL, PASADENA, CA 91125 USA

来源：

ASTROPHYSICAL JOURNAL | 1995年 / 452卷 / 02期

关键词：

GALAXIES; COMPACT; INDIVIDUAL; (3C; 346; 4C; 31.04); JETS; RADIO CONTINUUM; TECHNIQUES; INTERFEROMETRIC;

D O I：

10.1086/176333

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present observations at 1.7 and 8.4 GHz of two compact steep spectrum (CSS) sources from a complete sample of low-intermediate-power radio galaxies. The galaxy 3C 346 shows an asymmetric structure with a one-sided ''jet'' and ''hot spot.'' Present observations suggest that the classification of this source as a CSS is inappropriate and that it is a common radio galaxy at a small angle to the line of sight. Its properties are in agreement with the predictions of unified scheme models. The galaxy 4C 31.04 shows more complex structure, with the possibility of a centrally located flat spectum core in between two close lobes. We suggest that this source could be a low-redshift compact symmetric object.

引用

页码：605 / 612

页数：8

共 38 条

[21] AN OPTICAL CATALOG OF EXTRAGALACTIC EMISSION-LINE OBJECTS SIMILAR TO QUASI-STELLAR OBJECTS [J].