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Accurate radio and optical positions for southern radio sourcesAccurate radio positions with a precision of about 0.01 arcsec are reported for eight compact extragalactic radio sources south of -45-deg declination. The radio positions were determined using VLBI at 8.4 GHz on the 9589 km Tidbinbilla (Australia) to Hartebeesthoek (South Africa) baseline. The sources were selected from the Parkes Catalogue to be strong, flat-spectrum radio sources with bright optical QSO counterparts. Optical positions of the QSOs were also measured from the ESO B Sky Survey plates with respect to stars from the Perth 70 Catalogue, to an accuracy of about 0.19 arcsec rms. These radio and optical positions are as precise as any presently available in the far southern sky. A comparison of the radio and optical positions confirms the estimated optical position errors and shows that there is overall agreement at the 0.1-arcsec level between the radio and Perth 70 optical reference frames in the far south.
Document ID
19920037545
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Harvey, Bruce R.
(Commonwealth Scientific and Industrial Research Organization Dickson, Australia)
Jauncey, David L.
(Commonwealth Scientific and Industrial Research Organization Dickson, Australia)
White, Graeme L.
(CSIRO Australia Telescope National Facility, Epping, United States)
Nothnagel, Axel
(Commonwealth Scientific and Industrial Research Organization Dickson, Australia)
Nicolson, George D.
(Hartebeesthoek Radio Astronomy Observatory Krugersdorp, Republic of South Africa, United States)
Reynolds, John E.
(Mount Stromlo and Siding Spring Observatories Canberra, Australia)
Morabito, David D.
(JPL Pasadena, CA, United States)
Bartel, Norbert
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Astronomical Journal
Volume: 103
ISSN: 0004-6256
Subject Category
Astronomy
Accession Number
92A20169
Funding Number(s)
CONTRACT_GRANT: NSF AST-89-02087
CONTRACT_GRANT: NSF AST-85-19763
Distribution Limits
Public
Copyright
Other

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