A VLBI survey at 2.29 GHz

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Celestial Reference Systems, Deep Space Network, Quasars, Very Long Base Interferometry, Astronomical Catalogs, Galaxies, Surveys

Scientific paper

The Deep Space Network (DSN) is establishing a high-accuracy VLBI celestial reference frame. The results of a search for suitable radio sources to be used in constructing this frame are given. The VLBI observations using DSN baselines at 2.29 GHz with fringe spacings of about 3 milliarcseconds have been performed on 1398 radio sources spread over the entire sky. Of those, 917 sources were detected including 93% of the identifed BL Lacertae objects, 86% of Quasars and 36% of galaxies. The resulting catalog of compact radio sources is also useful for various astrophysical studies and in the formation of VLBI celestial reference frames.

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