Astron. Astrophys. Suppl. Ser.
Volume 120, Number 2, December I 1996
|Page(s)||201 - 205|
|Published online||15 December 1996|
A compiled catalogue of optical positions of extragalactic radio sources
Shanghai Observatory, Shanghai 200030, China
Corresponding author: Send offprint request to: Li Jinling, e-mail: email@example.com
Accepted: 15 April 1996
Based on 28 individual catalogues, in which the positions of optical counterparts of extragalactic radio sources are listed, we compiled a combined catalogue by means of a weighted least squares adjustment. The catalogue is in the system of FK5/J2000.0. It consists of about five hundred sources, among which there are 56 primary sources with position uncertainties as . Comparisons show that the orientation differences between optical and radio frames are Local relative deformations are not obvious within the precision of ground-based optical observations.
Key words: astrometry / reference frames / catalogues / radio continuum: galaxies
© European Southern Observatory (ESO), 1996