VLBI astrometric catalogues

VLBI astrometric catalogues

2010a catalogue of compact radio sources. This catalogue is currently the most complete. It includes all sources observed with astro/geo VLBI from 1980.04.11 through 2010.04.12.
4876 objects.

VCS6 catalogue. The VCS6 catalogue contains positions of 264 sources observed 2 sessions of the VLBI Calibrator Survey, including positions of some sources which have never been observed before July 2005 in geodetic/astrometric mode.
Reference: L. Petrov, Y. Kovalev, E. Fomalont, D. Gordon, "The fifth VLBA Calibrator Survey - VCS6", 2008, Astronomical Journal, in press. Preporint http://arXiv.org/abs/0801.3895 PDF-file.
More information is available here.
264 objects.

VCS5 catalogue. The VCS5 catalogue contains positions of 590 sources observed 3 sessions of the VLBI Calibrator Survey, including positions of ~500 sources which have never been observed before July 2005 in geodetic/astrometric mode. The survey include all sources with declination > -30^o with correlated flux density at baselines about 1000 km 200 mJy or brighter which have never been observed before with VLBI.
Reference: Y. Kovalev, L. Petrov, E. Fomalont, D. Gordon, "The fifth VLBA Calibrator Survey - VCS5", 2007, Astronomical Journal 2007, Vol. 133, pp. 1236-1242. Preprint: astro-ph/0607524 Full text (PS + gzip, 134Kb ) PDF-file.
More information is available here.
590 objects.

VCS4 catalogue. The VCS4 catalogue contains positions of 292 sources observed 3 sessions of the VLBI Calibrator Survey, including positions of 262 sources which have never been observed before July 2005 in geodetic/astrometric mode. The survey fills the regions which were not completely covered by previous VCS1, VCS2 and VCS3 surveys.
Reference: L. Petrov, Y. Kovalev, E. Fomalont, D. Gordon, "The fourth VLBA Calibrator Survey - VCS4", Astronomical Journal, vol. 131, 1872-1879, 2006. astro-ph/0508506
More information is available here.
292 objects.

VCS3 catalogue. The VCS3 catalogue contains positions of new 360 sources observed 3 sessions of the VLBI Calibrator Survey and never observed before April 2004 in geodetic/astrometric mode. The survey fills the regions which were not completely covered by previous VCS1 and VCS2 surveys.
Reference: L. Petrov, Y. Kovalev, E. Fomalont, D. Gordon, "The third VLBA Calibrator Survey - VCS3", Astronomical Journal, vol. 129, p. 1163--1170, 2005. astro-ph/0409698
More information is available here.
360 objects.

VCS2 catalogue. The VCS2 catalogue contains positions of new 276 sources observed 2 sessions of the VLBI Calibrator Survey and never observed January 2002 in geodetic/astrometric mode. The survey fills the regions which were not completely covered by previous VCS1 survey. The VCS2 includes calibrators sources near the galactic plane, -45 < delta < -30 and VLA calibrators.
Reference: E. Fomalont, L. Petrov, D.S. McMillan, D. Gordon, C. Ma, "The second VLBA Calibrator Survey - VCS2", Astronomical Journal, 126 (N5), p. 2562-2566, 2003.
More information is available here.
1332 objects.

VCS1 catalogue. The VCS1 catalogue contains positions of new 1332 sources observed 10 sessions of the VLBI Calibrator Survey and never observed December 1999 in geodetic/astrometric mode. Boundary conditions of coordinate were chosen so that the unweighted net rotation of the positions of 212 ICRF defining sources with respect to the of these sources in the ICRF catalogue is zero. This of boundary conditions secured that the coordinates in the VCS1 are in the system of the ICRF catalogue. The set estimated parameters in the solution for VCS was made as as possible to the choice made in construction of the ICRF catalogue. Therefore, systematic errors of the VCS1 catalogue are deemed to be similar to the systematic errors of the ICRF and ICRF Extension 1 catalogues.
Reference: A.J. Beasley, D. Gordon, A.B. Peck, L. Petrov, D.S. MacMillan, E.B. Fomalont, C. Ma, "The VLBA Calibrator Survey - VCS1", Asrophys. J., Supp., vol. 141, p.13-21, 2002.
More information is available here.
276 objects.

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This web page was prepared by Leonid Petrov ()
Last update: 2010.05.10_22:48:51