Images of four compact steep-spectrum quasars with a resolution of 20 milliarcseconds at 329.1 MHz

被引:33
作者
Simon, R. S.
Readhead, A. C. S.
Moffet, A. T.
Wilkinson, P. N.
Booth, R.
Allen, B.
Burke, B. F.
机构
[1] CALTECH, Owens Valley Radio Observ, Pasadena, CA 91125 USA
[2] Univ Manchester, Nuffield Radio Astron Labs, Jodrell Bank, Macclesfield SK11 9DL, Cheshire, England
[3] MIT, Dept Phys, Cambridge, MA 01002 USA
关键词
galaxies : jets; interferometry; quasars;
D O I
10.1086/168673
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Four compact steep-spectrum quasars (3C 48, 3C 147, 3C 309.1, and 3C 380) have been mapped with a resolution of 20 mas at 329 MHz. The structures of all four objects are asymmetric and complex, but they are shown here to be consistent with a basic one-sided jet morphology. In this, they are quite similar to other classes of radio sources; however, their small scales and convoluted structures suggest that in these objects, other factors such as the interaction with the interstellar medium and/or variations in the initial jet direction significantly affect the morphology.
引用
收藏
页码:140 / 147
页数:8
相关论文
共 43 条
[31]   VERY LONG BASELINE INTERFEROMETRY OBSERVATIONS OF 3C-147 AND 3C-286 AT 329-MEGAHERTZ [J].
SIMON, RS ;
READHEAD, ACS ;
MOFFET, AT ;
WILKINSON, PN ;
ANDERSON, B .
ASTROPHYSICAL JOURNAL, 1980, 236 (03) :707-713
[32]  
SIMON RS, 1988, B AAS, V19, P1066
[33]  
SIMON RS, 1983, THESIS CALTECH
[34]  
SIMON RS, 1983, IAU S, V110, P109
[35]  
SLEE OB, 1967, MNRAS, V214, P971
[36]   STUDIES OF KILOPARSEC-SCALE, STEEP-SPECTRUM RADIO CORES .1. VLA MAPS [J].
VANBREUGEL, W ;
MILEY, G ;
HECKMAN, T .
ASTRONOMICAL JOURNAL, 1984, 89 (01) :5-22
[37]  
Wilkinson P., 1988, IAU S, V129, P509
[38]   PECULIAR RADIO STRUCTURE IN THE QUASAR 3C380 [J].
WILKINSON, PN ;
BOOTH, RS ;
CORNWELL, TJ ;
CLARK, RR .
NATURE, 1984, 308 (5960) :619-621
[39]   RADIO STRUCTURE OF 3C147 DETERMINED BY MULTI-ELEMENT VERY LONG BASELINE INTERFEROMETRY [J].
WILKINSON, PN ;
READHEAD, ACS ;
PURCELL, GH ;
ANDERSON, B .
NATURE, 1977, 269 (5631) :764-768
[40]  
WILKINSON PN, 1984, PHYS ENERGY TRANSPOR, P76