[1] CSIC MPG, Ctr Astron Hispano Aleman, Almeria 04004, Spain
[2] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
[3] Univ Complutense Madrid, Dept Astrofis & CC Atmosfera, E-28040 Madrid, Spain
[4] Max Planck Inst Astron, D-69117 Heidelberg, Germany
[5] CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain
[6] Leibniz Inst Astrophys Potsdam AIP, D-14482 Potsdam, Germany
[7] Univ Sydney, Sydney Inst Astron, Sch Phys A28, Sydney, NSW 2006, Australia
[8] Australian Astron Observ, Epping, NSW 1710, Australia
[9] IAC, San Cristobal la Laguna, S C De Tenerife, Spain
[10] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain
[11] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands
[12] CSIC UC, Inst Fis Cantabria, Santander 39005, Spain
[13] Landessternwarte Heidelberg, ZAH, D-69117 Heidelberg, Germany
[14] Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen, Denmark
[15] Univ Porto, Ctr Astrofis, P-4150762 Oporto, Portugal
[16] Univ Porto, Fac Ciencias, P-4150762 Oporto, Portugal
[17] Acad Sci Czech Republic, Inst Astron, Vvi, Prague 14131, Czech Republic
[18] Inst Super Tecn, CENTRA Ctr Multidisciplinar Astrofis, P-1049001 Lisbon, Portugal
[19] Univ Edinburgh, Royal Observ, Inst Astron, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland
[20] CNRS, UMR 6110, Lab Astropys Marseille, F-13388 Marseille, France
[21] Univ Zaragoza, Dept Syst Engn & Comp, Teruel 44003, Spain
[22] Univ Zaragoza, Dept Elect Engineeing & Commun, Teruel 44003, Spain
[23] Univ Vienna, A-1180 Vienna, Austria
[24] Macquarie Univ, Dept Phys & Astron, N Ryde, NSW 2109, Australia
[25] CEFCA, Teruel, Spain
[26] Ruhr Univ Bochum, Astron Inst, D-44801 Bochum, Germany
[27] Univ Missouri, Dept Phys, Kansas City, MO 64110 USA
[28] Univ Granada, Dep Fis Ter & Cosmos, E-18071 Granada, Spain
[29] Univ La Laguna, Depto Astrofis, E-38206 Tenerife, Spain
[30] Heidelberg Univ, Zentrum Astron, Astron Rech Inst, D-69120 Heidelberg, Germany
[31] CNRS, Inst Astrophys Paris, F-75014 Paris, France
[32] Univ Paris Diderot, CNRS, Observ Paris, Lab GEPI,UMR8111, F-92195 Meudon, France
[33] Tianjin Normal Univ, Tianjin Astrophys Ctr, Tianjin 300387, Peoples R China
[34] Charles Univ Prague, Fac Math & Phys, Astron Inst, CR-12116 Prague, Czech Republic
[35] Masaryk Univ, Fac Sci, Dept Theoret Phys & Astrophys, CS-61137 Brno, Czech Republic