1. Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía s/n, E-18008 Granada, Spain
2. European Southern Observatory (ESO), Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile
3. Visiting Scientist: Departamento de Física Teórica, Facultad de Ciencias, Universidad de Zaragoza, E-50009, Zaragoza, Spain
4. Astronomy Department, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
5. School of Sciences, European University Cyprus, Diogenes Street, Engomi, 1516 Nicosia, Cyprus
6. South African Astronomical Observatory, PO Box 9, Observatory 7935, Cape Town, South Africa
7. Southern African Large Telescope, PO Box 9, Observatory 7935, Cape Town, South Africa
8. Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
9. Australian Astronomical Observatory, 105 Delhi Rd, North Ryde, NSW 2113, Australia
10. Department of Physics and Astronomy, Macquarie University, Sydney, NSW 2109, Australia
11. Tuorla Observatory, Department of Physics and Astronomy, University of Turku, Väisäläntie 20, FI-21500 Piikkiö, Finland
12. Finnish Centre for Astronomy with ESO (FINCA), University of Turku, Väisäläntie 20, FI-21500 Piikkiö, Finland