Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-25T16:29:58.585Z Has data issue: false hasContentIssue false
  • English
  • Français

Extension of the Optical Reference Frame:Space Based

Published online by Cambridge University Press:  14 August 2015

S. Röser
S. Röser*
Affiliation:
Astronomisches Rechen-Institut, [email protected] Mönchhofstr. 12-14, D-69120 Heidelberg, Germany

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

At its 23rd General Assembly, Kyoto 1997, the IAU decided that the International Celestial Reference Frame (ICRF) should be defined by the positions of 608 compact extragalactic radio sources (Ma & Feissel 1997), with the Hipparcos Catalogue (ESA 1997) being its practical realization at optical wavelengths. Although the Hipparcos instrument was unable to observe the defining sources of the ICRF directly in the optical regime, it is linked to the ICRF via a number of auxiliary observations (Kovalevsky et al. 1997). The Hipparcos Catalogue is the first celestial reference frame which is constructed from observations not made from the surface of the Earth.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 11 , Issue 1: Highlights of Astronomy. As presented at the XXIIIrd General Assembly of the IAU (Part A), 1997 , 1998 , pp. 304 - 306
Copyright
Copyright © Kluwer 1998

References

ESA (1997) The Hipparcos and Tycho Catalogues. European Space Agency, SP-1200Google Scholar
Fricke, W., Schwan, H., Lederle, T. et al. (1988). Fifth Fundamental Catalogue (FK5). Part I. The Basic Fundamental Stars. Veröff. Astron. Rechen-Institut Heidelberg, Nr.32.Google Scholar
Kovalevsky, J. et al (1997) The Hipparcos Catalogue as a realisation of the extragalactic reference system, A&A 323, 620 Google Scholar
Lindegren, L. & Ferryman, M.A.C. (1997) GAIA: Global Astrometric Interferometer for Astrophysics, A&AS 116, 579 Google Scholar
Ma, C. & Feissel, M. (1997) Definition and Realization of the International Celestial Reference System by VLBI Astromctry of Extragalactic Objects, IERS Technical Note 23 Google Scholar
Röser, S., Bastian, U., de Boer, K.S., Høg, E., Röser, H.P., Schalinski, C., Schilbach, E., de Vegt, Ch., Wagner, S. (1997a) DIVA - Towards Microarcsecond Global Astrometry, ESA-SP-402, (in press)Google Scholar
Röser, S., Bastian, U., de Boer, K.S., Høg, E., Schilbach, E., de Vegt, Ch., Wagner, S. (1997b) DIVA - a small satellite for global astrometry and photometry, (this volume).Google Scholar
Seidelmann, P.K. et al. (1996) A Fizeau Optical Interferometer Astrometric Satellite, in: Perryman, M.A.C. & van Leeuwen, F. (eds.), ESA-SP-379, 187 Google Scholar
Yoshizawa, M., Sato, K., Nishikawa, J., Fukushima, T., Miyamoto, M. (1997) Optical/Infrared Astrometric Satellite Project LIGHT, ESA-SP-402, (in press)Google Scholar