086314

Massive stars disperse the ISM by a combination of their powerful stellar winds comma supernova openParSNclosePar explosions and their UV fluxes. At large scales openPar>1 kpcclosePar the UV radiation plays a critical role in the evolution of galaxies comma but at smaller scales openPar<100 pcclosePar stellar feedback influence their stellar nurseries. Observational studies have been presented in the recent years arguing that the radiation pressure is significantly more important that the pressure resulted from the hot bubble interiors comma but we note that such studies draw conclusions by interpreting low spatial resolution ROSAT X-ray observations. We started a revisitation of the X-ray properties of superbubbles in the LMC taking advantage of a superior effective area and rejection of contaminant point sources using XMM.