Mercedes Mollá, Roberto Terlevich
We have computed with a fine time grid the evolution of the elemental abundances of He, C, N and O ejected by a massive (M$=10^{6}$\,\Msun) coeval stellar cluster with a Salpeter initial mass function (IMF) over a range of initial abundances. Our computations incorporate the mass loss from massive stars (M >30 Msun) during their wind phase including the Wolf-Rayet phase plus the ejecta from the supernova events. We find that during the Wolf-Rayet phase (t <5 Myr) the cluster ejecta composition suddenly becomes vastly over-solar in He, C, N and O and for all initial abundances with the C and O abundance in the cluster ejecta reaching over 50 times the solar value.
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http://arxiv.org/abs/1204.4879
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