A sample of 6C radio sources designed to find objects at redshift z>4 -: I.: The radio data

被引:62
作者
Blundell, KM
Rawlings, S
Eales, SA
Taylor, GB
Bradley, AD
机构
[1] Univ Oxford, Dept Phys, Oxford OX1 3RH, England
[2] Univ Wales Coll Cardiff, Dept Phys & Astron, Cardiff CF1 3NS, S Glam, Wales
[3] Natl Radio Astron Observ, Socorro, NM 87801 USA
关键词
galaxies; active; radio continuum;
D O I
10.1046/j.1365-8711.1998.01143.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We describe the selection of a sample of 34 radio sources from the 6C survey from a region of sky covering 0.133 sr, The selection criteria for this sample, hereafter called 6C*, were chosen to optimize the chances of finding radio galaxies at redshift z > 4. Optical follow-up observations have already led to the discovery of the most distant known radio galaxy at z = 4.41. We present VLA radio maps and derive radio spectra for all the 6C* objects.
引用
收藏
页码:265 / 279
页数:15
相关论文
共 30 条
[1]   THE 6C SURVEY OF RADIO-SOURCES .1. DECLINATION ZONE DELTA-GREATER-THAN+80-DEGREES [J].
BALDWIN, JE ;
BOYSEN, RC ;
HALES, SEG ;
JENNINGS, JE ;
WAGGETT, PC ;
WARNER, PJ ;
WILSON, DMA .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1985, 217 (03) :717-730
[2]   4C 41.17 - A RADIO GALAXY AT A REDSHIFT OF 3.8 [J].
CHAMBERS, KC ;
MILEY, GK ;
VANBREUGEL, WJM .
ASTROPHYSICAL JOURNAL, 1990, 363 (01) :21-+
[3]   Ultra-steep-spectrum radio sources .1. 4C objects [J].
Chambers, KC ;
Miley, GK ;
VanBreugel, WJM ;
Huang, JS .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1996, 106 (02) :215-246
[4]  
Colla G., 1973, Astronomy and Astrophysics Supplement Series, V11, P291
[5]  
COLLA G, 1970, ASTRON ASTROPHYS S, V1, P281
[6]   A 1400 MHZ SKY SURVEY .2. CONFUSION-LIMITED MAPS COVERING 19H30M-LESS-THAN-A LESS-THAN-7H30M, -5-DEGREES-LESS-THAN-DELTA-LESS-THAN+82-DEGREES [J].
CONDON, JJ ;
BRODERICK, JJ .
ASTRONOMICAL JOURNAL, 1986, 91 (05) :1051-1057
[7]  
DERUITER HR, 1986, ASTRON ASTROPHYS SUP, V65, P111
[8]   The Texas survey of radio sources covering -35.degrees 5<delta<71.degrees 5 at 365 MHz [J].
Douglas, JN ;
Bash, FN ;
Bozyan, FA ;
Torrence, GW ;
Wolfe, C .
ASTRONOMICAL JOURNAL, 1996, 111 (05) :1945-1963
[9]  
DUNLOP JS, 1990, MON NOT R ASTRON SOC, V247, P19
[10]  
EALES DA, 1997, MNRAS, V291, P593