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A Progress Report on the Establishment of the Radio/Optical Reference Frame

  • J. L. Russell
  • K. J. Johnston
  • C. De Vegt
  • N. Zacharias
  • C. Ma
  • D. Shaffer
  • D. L. Jauncey
  • G. L. White
  • G. Nicolson
  • A. Kemball
  • R. Hindsley
  • J. Hughes
  • J. E. Reynolds
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 141)

Abstract

In 1987 we began a 5-year program to establish a reference system of at least 400 extragalactic sources which are compact and flat spectrum in the radio and which also display optical emission. This reference frame is to be global with about one source per 100 sq deg (Johnston, et al., 1988). The program incorporates some data which had been obtained previously for other purposes. Altogether, in one or another aspect of the program, 489 sources have been considered so far.

Keywords

Reference Frame Inertial Coordinate System Extragalactic Source Flat Spectrum VLBI Observation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Argue, A.N., de Vegt, C., Elsmore, B., Fanselow, J., Harrington, R., Hemenway, P., Johnston, K.J., Kuehr, H., Kumkova, I., Neill, A.E., Walter, H., and Witzel, A. (1984) Astron. Astrophys., 130, 191–199.ADSGoogle Scholar
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Copyright information

© IAU 1990

Authors and Affiliations

  • J. L. Russell
    • 1
  • K. J. Johnston
    • 1
  • C. De Vegt
    • 2
  • N. Zacharias
    • 2
  • C. Ma
    • 3
  • D. Shaffer
    • 3
  • D. L. Jauncey
    • 4
  • G. L. White
    • 4
  • G. Nicolson
    • 5
  • A. Kemball
    • 5
  • R. Hindsley
    • 6
  • J. Hughes
    • 6
  • J. E. Reynolds
    • 7
  1. 1.U. S. Naval Research Lab, Code 4030USA
  2. 2.Hamburger SternwarteHamburg 60Germany, Fed. Republic
  3. 3.Crustal Dynamics ProjectGoddard Space Flight Center, Code 621.9GreenbeltUSA
  4. 4.Australia Telescope National FacilityCSIRO Division of RadiophysicsSydneyAustralia
  5. 5.Hartebeesthoek Radio Astronomy ObservatoryPretoriaSouth Africa
  6. 6.U. S. Naval ObservatoryUSA
  7. 7.Mount Stromlo and Siding Spring Obs.Australian National UniversityWodenAustralia

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