Affiliation: | School of Physics and Astronomy, North Haugh, University of St Andrews, St Andrews, Fife KY16 9SS;Observatoire de Genève, Chemin des Maillettes 51, CH-1290 Sauverny, Switzerland;Department of Physics, Keele University, Keele, Staffordshire ST5 5BG;Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy;Departamento de Ciências Agrárias, Universidade dos Açores, Portugal |