First Caltech-Jodrell Bank VLBI Survey. III (Xu+ 1995)

Mathematics – Logic

Scientific paper

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Qsos, Radio Sources, Vlbi

Scientific paper

We present the 5GHz results from the first Caltech-Jodrell Bank (CJ1) VLBI survey. The 1.6GHz maps were presented in two separate papers, Polatidis et al. and Thakkar et al. . These three papers complete the first stage of this program to map at both 1.6 and 5GHz all objects accessible to Mark II VLBI in the complete sample of 135 objects with 1.3>S(5Ghz)>=0.7Jy, Dec(1950)>=35deg, and |b|>10deg. The combination of the CJ1 sample with the Pearson-Readhead (PR) sample provides a complete, flux density-limited sample of 200 objects with S(5GHz)>=0.7Jy, Dec(1950)>=35deg, |b|>10deg for which all of the objects accessible to Mark II VLBI have been mapped at both 5GHz (129 objects) and 1.6GHz (132 objects). In addition to the 5GHz VLBI maps, we present in this paper 5GHz MERLIN observations of 20 objects and 1.4GHz VLA observations of 92 objects in the combined CJ1 + PR sample. The VLA maps, together with L-band (1.3-1.7GHz) maps available in the literature, provide a complete set of VLA maps for the combined CJ1 + PR sample. Finally, we present the radio spectra of the objects in the CJ1 sample. The combined CJ1 + PR VLBI surveys provide a sample which is large enough for a number of important astrophysical and cosmological studies. These will be presented in further papers in this series. (4 data files).

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