Institution: | 1 Laboratory for Space Sciences and the Physics Department, Washington University, One Brookings Drive, St. Louis, MO 63130, USA 2 Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW Washington DC, 20015, USA 3 Max-Planck-Institut für Chemie, Kosmochemie, P.O. Box 3060, D-55020 Mainz, Germany 4 Dipartimento di Fisica Generale, Università di Torino, Via P. Giuria 1, I-10125 Torino, Italy 5 Centre for Stellar and Planetary Astrophysics, School of Mathematical Sciences, Monash University, Victoria 3800 Australia 6 INAF, Osservatorio Astronomico di Teramo, Italy |