Growing evidence for the existence of very massive stars (up to 500 Solar Masses) motivated the development of corresponding stellar evolution models accounting for a wide range of rotation rates (0 to 550 km/s), masses (from 70 to 500 M⊙), LMC composition covering the hydrogen burning phase. In Kohler et al. we discuss the many peculiar phenomena, homogenous evolution, inflation, mass loss. We find that mass loss and spin down prevents the formation of pair instability supernovae and long gamma-ray burst, for these high masses.
Koehler, Langer, de Koter, de Mink, Crowther et al. accepted for publication in A&A (2014)