Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....89..198w&link_type=abstract
Astronomy and Astrophysics, vol. 89, no. 1-2, Sept. 1980, p. 198-203.
Astronomy and Astrophysics
Astronomy
3
Astrometry, Astronomical Catalogs, Interferometry, Radio Sources (Astronomy), Astronomical Coordinates, Error Analysis, Position (Location)
Scientific paper
A catalog of radio source positions is compiled from currently available high precision interferometric observations of compact extragalactic objects. Rigorous adjustment of observational data is practised by solving simultaneously for corrections of the source positions and of the instrumental systems being involved. After deletion of spurious observations from an original sample of thirty-two radio sources, there remain twenty-eight objects constituting a reference coordinate system whose systematic error is approximately 0.01 arcsec in both coordinates. The individual errors of the radio source positions amount to 0.03 arcsec in right ascension and 0.02 arcsec in declination. Systematic errors are derived for the various independent surveys contributing to the catalogue formation, and assessment of their weights is attempted.
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