1. Observatório Nacional, Rua General José Cristino 77, São Cristóvão RJ 20921-400, Rio de Janeiro, Brazil
2. Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, Rua do Matão 1226, SP 05508-900, Brazil
3. Faculty of Engineering, Hokkai-Gakuen University, Toyohira-ku, Sapporo, Hokkaido 062-8605, Japan
4. European Organisation for Astronomical Research in the Southern Hemisphere, Karl Schwarzschild-Str. 2, D-85748 Garching bei München, Germany
5. European Organisation for Astronomical Research in the Southern Hemisphere, Casilla 19001, Santiago 19, Chile