[1] Istanbul Univ, Fac Sci, Dept Astron & Space Sci, TR-34119 Univ Istanbul, Turkey
[2] Beykent Univ, Fac Sci & Letters, Dept Math & Comp, TR-34398 Istanbul, Turkey
[3] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
[4] Open Univ, E2v Ctr Elect Imaging, Planetary & Space Sci Res Inst, Milton Keynes MK7 6BJ, Bucks, England
[5] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England
[6] Observ Strasbourg, F-67000 Strasbourg, France
[7] Univ Sydney, Sydney Inst Astron, Sch Phys, Sydney, NSW 2006, Australia
[8] Western Kentucky Univ, Bowling Green, KY 42101 USA
[9] Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 0200, Australia
[10] Univ Cent Lancashire, Preston PR1 2HE, Lancs, England
[11] Heidelberg Univ, Astron Rechen Inst, Zentrum Astron, Heidelberg, Germany
[12] INAF Astron Observ Padova, I-36012 Asiago, VI, Italy
[13] Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 5C2, Canada
[14] Macquarie Univ, Sydney, NSW 2109, Australia
[15] Australian Astron Observ, Sydney, NSW 1710, Australia
[16] Astrophys Inst Potsdam, D-14482 Potsdam, Germany
[17] Johns Hopkins Univ, Baltimore, MD 21218 USA
[18] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia
[19] Ctr Excellence SPACE SI, Ljubljana, Slovenia