1. Astrophysics and Space Technologies Research Centre, School of Mathematical and Physical Sciences, Macquarie University , NSW 2109 , Australia
2. ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia
3. Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge CB3 0HA , United Kingdom
4. Cavendish Laboratory - Astrophysics Group, University of Cambridge , 19 JJ Thomson Avenue, Cambridge CB3 0HE , United Kingdom
5. School of Physics, University of New South Wales , Sydney, NSW 2052 , Australia
6. International Centre for Radio Astronomy Research, The University of Western Australia , 35 Stirling Highway, Crawley WA 6009 , Australia
7. Sydney Institute for Astronomy, School of Physics, University of Sydney , NSW 2006 , Australia
8. Research School of Astronomy and Astrophysics, Australian National University , Canberra ACT 2611 , Australia
9. Instituto de Astrofísica de Canarias , Vía Láctea s/n, E-38205 La Laguna, Tenerife , Spain
10. Departamento de Astrofisica, Universidad de La Laguna , E-38200 La Laguna, Tenerife , Spain
11. Center for Astrophysics and Supercomputing, Swinburne University , John Street, Hawthorn VIC 3122 , Australia
12. Department of Astronomy, School of Physics, Peking University , 5 Yiheyuan Road, Beijing 100871 , P. R. China
13. Kavli Institute for Astronomy and Astrophysics, Peking University , 5 Yiheyuan Road, Beijing 100871 , P. R. China
14. School of Mathematics and Physics, University of Queensland , Brisbane QLD 4072 , Australia
15. Department of Astrophysics, University of Vienna , Türkenschanzstrasse 17, 1180 Wien , Austria
16. Universitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians-Universität München , Scheinerstr. 1, 81679 München , Germany