1. Center for Astrophysics, Harvard & Smithsonian Cambridge Massachusetts USA
2. Institute of Astronomy, Faculty of Physics, Astronomy and Informatics, NCU Toruń Poland
3. LERMA, Observatoire de Paris, CNRS, PSL Univ., Sorbonne Univ Paris France
4. Collège de France Paris France
5. Naval Research Laboratory Washington District of Columbia USA