M. Heydari-Malayeri (1), M.R. Rosa (2), V. Charmandaris (3 and 1), L. Deharveng (4), F. Martins (5), F. Meynadier (1), D. Schaerer (6), H. Zinnecker (7) ((1) LERMA, Paris Observatory, France, (2) ST-ECF, ESO, Germany; affiliated to the Space Telescope Operations Division, RSSD, ESA, (3) University of Crete, Greece, (4) Marseille Observatory, France, (5) MPE, Garching bei Munchen, Germany, (6) Geneva Observatory, Switzerland; Observatoire Midi-Pyrenees, Laboratoire d`Astrophysique, Toulouse, France, (7) Potsdam Astrophysical Institute, Germany)
