1. Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany
2. Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
3. Research School of Astronomy and Astrophysics, Australian National University, ACT 2611, Australia
4. Center of Excellence for Astrophysics in Three Dimensions (ASTRO-3D), Australia
5. Universitäts-Sternwarte München, Scheinerstrae 1, D-81679 München, Germany
6. New York University Abu Dhabi, Saadiyat Island, PO Box 129188 Abu Dhabi, United Arab Emirates
7. Center for Astro, Particle and Planetary Physics (CAP3), New York University, PO Box 129188 Abu Dhabi, United Arab Emirates
8. Department of Astronomy, Columbia University, 550 West 120th Street, New York, NY, USA