[1] CSIC, IAA, Glorieta Astron S-N, E-18008 Granada, Spain
[2] Wellesley Coll, Dept Astron, Wellesley, MA 02481 USA
[3] Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA
[4] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA
[5] Natl Cent Univ, Inst Astron, Taoyuan 32001, Taiwan
[6] Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 10617, Taiwan
[7] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany
[8] Max Planck Inst Solar Syst Res, Gottingen, Germany
[9] Fed Univ Technol Parana UTFPR DAFIS, Curitiba, Parana, Brazil
[10] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA USA
[11] Univ Paris 06, CNRS, Observ Paris, Univ Paris Diderot,LESIA, Meudon, France
[12] Fac Ciencias, Dept Astron, Montevideo, Uruguay
[13] SwRI, 1050 Walnut St, Boulder, CO 80302 USA
[14] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA