1. Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , 09210-580 Santo André, SP, Brazil
2. Copernicus Astronomical Center , ul. Bartycka 18, PL-00-716, Warszawa, Poland
3. Institute of Physics, Silesian University in Opava , Bezručovo nám. 13, CZ-746 01 Opava, Czech Republic