1. Foundation for Research and Technology – Hellas, IESL, Voutes, 71110 Heraklion, Greece
2. Physics Department & Institute of Theoretical & Computational Physics, University of Crete, 71003 Heraklion, Crete, Greece
3. Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 782-0436 Macul, Santiago, Chile
4. Millennium Institute of Astrophysics, Av. Vicuña Mackenna, 4860, Macul, Santiago, Chile
5. Department of Astronomy, Columbia University, 550 West 120th Street, New York, NY 10027, USA