An observational program for a unified optical-radio reference frame

Details An observational program for a unified optical-radio reference frame An observational program for a unified optical-radio reference frame

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.177..199d&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 177, no. 1-2, March 1991, p. 199-202.

Astronomy and Astrophysics

Astrophysics

1

Celestial Reference Systems, Extragalactic Radio Sources, Optical Countermeasures, Reference Stars, Astronomical Catalogs, Hipparcos Satellite, Southern Hemisphere

Scientific paper

An observational pilot program is described which provides a first step toward the construction of an inertial extragalactic reference frame from optical and radio measurements. Candidate objects will be selected from extragalactic compact radio sources which display optical counterparts. Galactic radio stars will be secondary reference objects. The reference frame will be defined by the radio positions of the extragalactic objects. Based on a coordinated effort in both hemispheres, a global homogeneous net of about 400 quasars and 100 radio stars is expected to result from a five year campaign.

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