1. Nicolaus Copernicus Astronomical Center, The Polish Academy of Sciences , ul. Bartycka 18, 00-716 Warsaw, Poland
2. European Southern Observatory , Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
3. Max Planck Institute for Astrophysics , Karl-Schwarzschild-Strasse 1, 85748 Garching bei München, Germany
4. McWilliams Center for Cosmology, Department of Physics , Carnegie Mellon University , Pittsburgh, PA 15213, USA
5. Anton Pannekoek Institute for Astronomy , Science Park 904, NL-1098 XH, Amsterdam, the Netherlands
6. Faculty of Physics, Astronomy and Informatics, Institute of Astronomy, Nicolaus Copernicus University , Grudziądzka 5, 87-100 Toruń, Poland