Affiliation: | Dipartimento di Astronomia, Universitàdegli Studi di Bologna, Via Ranzani 1, 40127 Bologna, Italy;INAF –Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127 Bologna, Italy;Department of Astronomy and Astrophysics, The Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, USA;Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101, USA |