Acknowledgements

Valentina E. Karachentseva, Igor D. Karachentsev, and Helmut Jerjen participated in this project. The Australia Telescope is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. The Nanö§ay Radio Observatory is the Unitö© Scientifique de Nanö§ay of the Observatoire de Paris, associated as Unitö© de Service et de Recherche (USR) N0. B704 to the French Centre National de Recherche Scientifique (CNRS). The Nanö§ay Observatory also gratefully acknowledges the financial support of the Conseil Rö©gional of the Rö©gion Centre in France. This work has been partially supported by the Deutsche Forschungsgemeinschaft (DFG) under project no. 436 RUS 113/470/0 (R). M.E. acknowledges financial support from DFG grant no. EH 154/1-1.