1. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 0200, Australia
2. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
3. International Centre for Radio Astronomy Research, Curtin University, Perth, WA 6845, Australia
4. Sydney Institute for Astronomy, School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
5. ARC Centre of Excellence for All-sky Astrophysics (CAASTRO) University of Sydney, Sydney, NSW 2006, Australia
6. Observatoire de Genève, Université de Genève, Chemin des maillettes 51, CH-1290 Sauverny, Switzerland
7. European Southern Observatory, Av. Alonso de Córdova 3107, 763 0355 Vitacura, Santiago, Chile
8. Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USA
9. Cerro-Tololo Inter-American Observatory, Casilla 603, La Serena, Chile
10. Department of Physics and JINA Center for the Evolution of the Elements, University of Notre Dame, Notre Dame, IN 46556, USA
11. Australian Astronomical Observatory, PO Box 915, North Ryde, NSW 1670, Australia
12. CSIRO Astronomy & Space Sciences, PO Box 76, Epping, NSW 1710, Australia
13. School of Mathematical & Physical Sciences, University of Technology Sydney, 15 Broadway, Ultimo, NSW 2007, Australia
14. Dunlap Institute for Astronomy and Astrophysics, The University of Toronto, ON M5S 3H4, Canada