Volume 376, Number 3, September IV 2001
|Page(s)||1090 - 1105|
|Section||Atomic, molecular, and nuclear data|
|Published online||15 September 2001|
Absolute kinematics of radio source components in the complete S5 polar cap sample
I. First and second epoch maps at 8.4 GHz
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
2 Departament d'Astronomia i Astrofísica, Universitat de València, 46100 Burjassot, València, Spain
3 Observatorio Astronómico, Universitat de València, 46100 Burjassot, València, Spain
4 Istituto di Radioastronomia, Via Gobetti 101, 40129 Bologna, Italy
Corresponding author: E. Ros, firstname.lastname@example.org
Accepted: 4 July 2001
We observed the thirteen extragalactic radio sources of the S5 polar cap sample at 8.4 GHz with the Very Long Baseline Array, on 1997.93 and 1999.41. We present the maps from those two epochs and briefly discuss the morphological changes experimented by some of the radio sources in the 1.4 yr elapsed. These results correspond to the first two epochs at 8.4 GHz of a program directed to study the absolute kinematics of the radio source components of the members of the sample by means of phase delay astrometry at 8.4, 15 and 43 GHz.
Key words: astrometry / techniques: interferometric / quasars: general / BL Lacertae objects: general
© ESO, 2001
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