1. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
2. INAF – Osservatorio Astronomico di Roma, via Frascati 33, I-00078 Monteporzio Catone, Italy
3. SUPA – Scottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ, UK
4. Centre for Astrophysics Research, Department of Physics, Astronomy and Mathematics, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK
5. Cosmic DAWN Center, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark
6. INAF – Istituto di Astrofisica Spaziale e Fisica Cosmica Milano, via A.Corti 12, I-20133 Milano, Italy
7. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
8. Instituto de Investigación Multidisciplinar en Ciencia y Tecnología, Universidad de La Serena, Raúl Bitrán, 1305 La Serena, Chile
9. Departamento de Física y Astronomía, Universidad de La Serena, Av. Juan Cisternas 1200 Norte, La Serena, Chile
10. INAF – OAS Bologna, Via P. Gobetti 93/3, I-40129 Bologna, Italy