Lancon, A × Mouhcine, M Chané, Emmanuel Smith, L. J Gallagher, J. S Schreiber, N. Forster Vacca, W de Grijs, R O'Connell, R. W #
Astronomical soc pacific
Highlights of astronomy, vol 13 vol:13 pages:203-203
Based on new spectra spanning wavelengths from 0.8 to 2.4 mu m, we study the properties of bright near-IR clusters in M82. We focus on age and extinction, which are critical parameters when one uses dynamical masses to constrain the stellar IMF. The modelling of red supergiant evolution by various authors leads to very significant differences in synthetic cluster spectra. Near-IR fluxes alone therefore do not rule out a normal IMF for cluster F, previously found to be deficient in low mass stars. Combined optical and near-IR studies are being undertaken.