Providing the initial mass function of the first-generation stars of the universe with a peculiar chemical abundance pattern of metal-poor stars

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It is critically important to determine the typical mass (i.e., Initial Mass Function) of the First Stars in the Universe, which contain no heavy elements called Population III stars, because those stars affect the formation of First galaxies and evolution of early Universe. In the present study, we simulated the supernova explosion of massive stars to predict the abundance patterns of ejecta. By comparing the model prediction and the observed patterns, we estimated that the typical masses of First Stars are 20-50M.