Evaluation of catalogues of extragalactic radio sources

Details Evaluation of catalogues of extragalactic radio sources Evaluation of catalogues of extragalactic radio sources

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.177...97w&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 177, no. 1-2, March 1991, p. 97-103.

Astronomy and Astrophysics

Astrophysics

Astronomical Catalogs, Extragalactic Radio Sources, Astrometry, Data Bases, Precision, Radio Interferometers

Scientific paper

A combined catalog is constructed from the observations of extragalactic radio sources compiled in independent catalogs providing precise positions determined by radio interferometric techniques. Positions and catalog differences are derived and discussed. The average precision of combined catalog is at the level of 0.7 mas in right ascension and 1.3 mas in declination. For the more recent catalogs the systematic differences amount to a fraction of a millisecond of arc.

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