Extragalactic Radio Source Selection for Radio/Optical Frame Ties

Details Extragalactic Radio Source Selection for Radio/Optical Frame Ties Extragalactic Radio Source Selection for Radio/Optical Frame Ties

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ivsg.conf..363f&link_type=abstract

International VLBI Service for Geodesy and Astrometry General Meeting Proceeding, p. 363

Astronomy and Astrophysics

Astronomy

Astrometry, Celestial Reference Systems, Radio Observation, Radio Sources (Astronomy), Data Bases, Spatial Distribution

Scientific paper

Future space-based optical astrometric satellite missions present the possibility of directly linking the radio and optical reference frames at the micro-arcsecond level. We have evaluated the current database of radio observations of the extragalactic objects which make up the International Celestial Reference Frame to determine the optimum candidates, in terms of their radio properties, for use as radio/optical frame tie sources. We suggest that the radio astrometric quality as described in this paper can be applied to the next realization of the ICRF.

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