1. Department of Physics and Astronomy, University of Louisville , Natural Science Building 102, 40292 KY Louisville, USA
2. Australian Astronomical Optics, Macquarie University , 105 Delhi Rd, North Ryde, NSW 2113, Australia
3. Department of Physics and Astronomy, Macquarie University , NSW 2109, Australia
4. ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO-3D) , Australia
5. Astrophysics Group, School of Physics, University of Bristol , Tyndall Avenue, Bristol BS8 1TL, UK
6. Centre for Astrophysics and Supercomputing, Swinburne University of Technology , Hawthorn, VIC 3122, Australia
7. School of Physics, University of New South Wales , NSW 2052, Australia
8. E.A. Milne Centre for Astrophysics, University of Hull , Cottingham Road, Kingston-upon-Hull HU6 7RX, UK
9. Hamburger Sternwarte, Universität Hamburg , Gojenbergsweg 112, D-21029 Hamburg, Germany
10. Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08544, USA
11. Jodrell Bank Centre for Astrophysics, Department of Physics & Astronomy, University of Manchester , Oxford Road, Manchester M13 9PL, UK
12. Observational Astrophysics Group, Lancaster University , Lancaster LA1 4YW, UK
13. Department of Physics, University of Oxford , Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK