1. Department of Astrophysics, University of Exeter , Stocker Rd, Exeter EX4 4QL , UK
2. Department of Astrophysics, University of Birmingham , Edgbaston, Birmingham B15 2TT , UK
3. Observatoire de Geneéve, Université de Geneéve , Chemin de Pegasi, 51, CH-1290 Versoix , Switzerland
4. Department of Physics and Astronomy, Uppsala University , Box 516, SE-75120 Uppsala , Sweden
5. Centre for Astrophysics, University of Southern Queensland , West St, Toowoomba, QLD 4350 , Australia
6. Center for Astrophysics | Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138 , USA
7. Department of Physics, Sub-department of Astrophysics, University of Oxford , Oxford OX1 3RH , UK
8. SUPA, School of Physics & Astronomy, University of St Andrews , North Haugh, St Andrews KY169SS , UK
9. Centre for Exoplanet Science, University of St Andrews , North Haugh, St Andrews KY169SS , UK
10. Fundación Galileo Galilei – INAF (Telescopio Nazionale Galileo) , Rambla J. A. F. Perez 7, E-38712 Breña Baja (La Palma), Canary Islands , Spain
11. INAF – Osservatorio Astrofisico di Torino , Strada Osservatorio, 20 I-10025 Pino Torinese (TO) , Italy