[1] Paul Scherrer Institut, Villigen und Würenlingen, 5232, Switzerland
[2] Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
[3] INAF, Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, 90134 Palermo, Italy
[4] Laboratoire d'Astrophysique de Grenoble, Université Joseph Fourier, BP 53, 38041, Grenoble Cedex 9, France
[5] Spitzer Science Center, Caltech M/S 220-6, 1200 East California Boulevard, Pasadena, CA 91125, United States
[6] Columbia Astrophysics Laboratory, Mail Code 5247, 550 West 120th Street, New York, NY 10027, United States
[7] Integral Science Data Center, Ch. d'Ecogia 16, 1290 Versoix, Switzerland
[8] Geneva Observatory, University of Geneva, Ch. des Maillettes 51, 1290 Sauverny, Switzerland
[9] Dipartimento di Scienze Fisiche ed Astronomiche, Sezione di Astronomia, Università di Palermo, Piazza Del Parlamento 1, 90134 Palermo, Italy
[10] INAF, Osservatorio Astrofisica di Arcetri, Largo E. Fermi 5, 50125 Florence, Italy