2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/5651We present the first results of a spectroscopic study of young massive stars in the SMC High Excitation Blob N81. These stars have Mv values which are ~ 2 mag smaller than those of nor mal dwarf stars. Their UV STIS spectra reveal features typical of O stars, but surprisingly weak wind components. The preliminary modelling of these spectr a with the code CMFGEN (Hillier & Miller 1998) indicates a mass loss rate of the order 10e-9 Mdot/yr. If confirmed, such a weak wind may indicate either a breakdown of the wind-momentum luminosity relation at low luminosity, or a steeper slope of this relation at low metallicity.A massive star odyssey : from main sequence to supernovae, Proc. IAU Symp. 212, K.A. van der Hucht, A. Herrero, C. Esteban eds, ASP conf. series, in pressAstrophysicstext