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Paper: Constraining the IMF with the Cosmic Spectral Energy Distribution
Volume: 440, UP2010: Have Observations Revealed a Variable Upper End of the Initial Mass Function?
Page: 377
Authors: Wilkins, S. M.
Abstract: Using the observed local Cosmic Spectral Energy Distribution (CSED) and Cosmic Star Formation History (CSFH) we constrain the high-mass slope of the stellar Initial Mass Function (IMF). We find that, together, the CSED and CSFH suggest that very steep high-mass slopes: α2>2.45 (c.f. Salpeter α2=2.35) are strongly disfavoured and that a slightly-shallower than Salpeter high-mass slope α2=2.2 produces the greatest correspondence. However, these conclusions are dependent on the accuracy of population synthesis models and the assumption of the fiducial ΛCDM cosmology.
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