Southern compact extragalactic radio sources

The catalogue spans the declination range [-90{deg},-30{deg}] and was constructed from 19 24-h VLBI observing sessions with the Australian Long Baseline Array at 8.3GHz. The catalogue presents the final part of the program that was started in 2008.

The goals of that campaign were (1) to extend the number of compact radio sources with precise coordinates and measure their correlated flux densities, which can be used for phase referencing very long baseline interferometry (VLBI) and Atacama Large Millimeter/submillimeter Array (ALMA) observations, geodetic VLBI, search for sources with significant offsets with respect to Gaia positions, and space navigation; (2) to extend the complete flux-limited sample of compact extragalactic sources to the Southern hemisphere; and (3) to investigate the parsec-scale properties of sources from the high-frequency AT20G survey.