1. INAF – Osservatorio Astronomico di Bologna , Via Gobetti 93/3, I-40129 Bologna, Italy
2. Sterrenkundig Observatorium, Ghent University , Krijgslaan 281 - S9, B-9000 Gent, Belgium
3. CINECA National Supercomputing Center , 40033 Casalecchio di Reno, Bologna, Italy
4. INAF - Osservatorio Astronomico di Trieste , Via Tiepolo 11, I-10134 Trieste, Italy
5. CNRS, Université Côte d’Azur, Observatoire de la Côte d’Azur , Laboratoire Lagrange, CS 34229, 06304 Nice cedex 4, France
6. INAF – Istituto di Radioastronomia , Via P. Gobetti 101, I-40129 Bologna, Italy
7. Department of Physics, Indian Institute of Technology (BHU) , Varanasi 221005, India
8. INAF – Osservatorio Astrofisico di Arcetri , Largo E. Fermi 5, I-50125 Firenze, Italy
9. Dipartimento di Fisica e Astronomia, Universitá of Bologna , via Gobetti 93/2, I-40129 Bologna, Italy