Institution: | INAF –Osservatorio Astronomico di Capodimonte, Via Moiariello 16, Napoli 80124, Italy;CNRS –Laboratoire d'Astrophysique de Marseille, BP 8, Traverse du Siphon, 13376 Marseille Cedex 12, France;Physics Department, UniversitàFederico II, Napoli, Italy |