Sub-milliarcsecond imaging of quasars and active galactic nuclei. II. Additional sources

被引：92

作者：

Zensus, JA

Ros, E

Kellermann, KI

Cohen, MH

Vermeulen, RC

Kadler, M

机构：

[1] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[2] Natl Radio Astron Observ, Charlottesville, VA 22903 USA

[3] CALTECH, Dept Astron, Pasadena, CA 91125 USA

[4] Netherlands Fdn Res Astron, NL-7990 AA Dwingeloo, Netherlands

来源：

ASTRONOMICAL JOURNAL | 2002年 / 124卷 / 02期

关键词：

galaxies : active; galaxies : jets; galaxies : nuclei;

D O I：

10.1086/341585

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report further results from our imaging survey at 15 GHz (lambda = 2 cm) with the Very Long Baseline Array (VLBA). This paper presents single-epoch images for 39 sources, bringing the total number of objects in the sample to 171. Our sample is representative of a complete unbiased sample, and it will be used for statistical analysis of source properties. We compare the observed brightness temperatures derived from our VLBA observations with those derived from total intensity variations at 22 and 37 GHz. These are consistent with intrinsic brightness temperatures in the range 10(10)-10(12) K. We also present three new spectroscopic redshift values: z = 0.517 +/- 0.001 for 0026+346, z = 1.591 +/- 0.003 for 0727-115, and z = 0.2016 +/- 0.0004 for 1155+251.

引用

收藏

页码：662 / 674

页数：13

相关论文

共 114 条

[41] PKS 0405-385: The smallest radio quasar? [J].

KedzioraChudczer, L ;

Jauncey, DL ;

Wieringa, MH ;

Walker, MA ;

Nicolson, GD ;

Reynolds, JE ;

Tzioumis, AK .

ASTROPHYSICAL JOURNAL, 1997, 490 (01) :L9-L12

[42] SPECTRA OF OPAQUE RADIO SOURCES [J].

KELLERMA.KI ;

PAULINYT.II .

ASTROPHYSICAL JOURNAL, 1969, 155 (2P2) :L71-&

[43] HIGH-RESOLUTION OBSERVATIONS OF COMPACT RADIO SOURCES AT 6 AND 18 CENTIMETERS [J].

KELLERMANN, KI ;

JAUNCEY, DL ;

COHEN, MH ;

SHAFFER, BB ;

CLARK, BG ;

BRODERICK, J ;

RONNANG, B ;

RYDBECK, OEH ;

MATVEYENKO, L ;

MOISEYEV, I ;

VITKEVITCH, VV ;

COOPER, BFC ;

BATCHELOR, R .

ASTROPHYSICAL JOURNAL, 1971, 169 (01) :1-+

[44] Sub-milliarcsecond imaging of quasars and active galactic nuclei [J].

Kellermann, KI ;

Vermeulen, RC ;

Zensus, JA ;

Cohen, MH .

ASTRONOMICAL JOURNAL, 1998, 115 (04) :1295-1318

[45]

KELLERMANN KI, 2002, UNPUB

[46] COSMIC: A multiobject spectrograph and direct imaging camera for the 5 meter Hale telescope prime focus [J].

Kells, W ;

Dressler, A ;

Sivaramakrishnan, A ;

Carr, D ;

Koch, E ;

Epps, H ;

Hilyard, D ;

Pardeilhan, G .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1998, 110 (754) :1487-1498

[47] Why quasar pairs are binary quasars and not gravitational lenses [J].

Kochanek, CS ;

Falco, EE ;

Muñoz, JA .

ASTROPHYSICAL JOURNAL, 1999, 510 (02) :590-596

[48] HIGH DYNAMIC-RANGE VLA OBSERVATIONS OF 8 CORE-DOMINATED QUASARS [J].

KOLLGAARD, RI ;

WARDLE, JFC ;

ROBERTS, DH .

ASTRONOMICAL JOURNAL, 1990, 100 (04) :1057-1072

[49] RELATIVISTIC JETS AS X-RAY AND GAMMA-RAY SOURCES [J].

KONIGL, A .

ASTROPHYSICAL JOURNAL, 1981, 243 (03) :700-709

[50] Survey of instantaneous 1-22 GHz spectra of 550 compact extragalactic objects with declinations from-30° to+43° [J].

Kovalev, YY ;

Nizhelsky, NA ;

Kovalev, YA ;

Berlin, AB ;

Zhekanis, GV ;

Mingaliev, MG ;

Bogdantsov, AV .

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1999, 139 (03) :545-554

← 1 2 3 4 5 6 7 8 9 10 →