1. University of Southern Queensland, Centre for Astrophysics , Toowoomba, QLD 4350, Australia
2. Solar and Stellar Interiors Department, Max Planck Institut for Solar System Research , Justus-von-Liebig-Weg 3, D-37077 Göttingen, Germany
3. LUPM, Université de Montpellier , CNRS, Place Eugéne Bataillon, F-34095 Montpellier, France
4. University of Vienna, Department of Astrophysics , Turkenschanzstrasse 17, A-1180 Vienna, Austria
5. Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse , CNRS, CNES, F-31400 Toulouse, France
6. SUPA, School of Physics and Astronomy, University of St Andrews , North Haugh, St Andrews KY16 9SS, UK
7. European Space Agency (ESA), European Space Research and Technology Centre (ESTEC) , Keplerlaan 1, NL-2201 AZ Noordwijk, the Netherlands
8. University of Exeter, Department of Physics & Astronomy , Stoker Road, Devon, Exeter EX4 4QL, UK
9. School of Physics, Trinity College Dublin, The University of Dublin , College Green, Dublin-2, Ireland
10. Leiden Observatory, Leiden University , PO Box 9513, NL-2300 RA Leiden, the Netherlands
11. University of Göttingen, Physics Education Research , Friedrich Hund Platz 1, D-37077 Göttingen, Germany
12. CERN, Teacher and Student Programmes , Esplanade de Particules 1, CH-1211 Genève 23, Switzerland