The effect of massive binaries on stellar populations and supernova progenitors

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Abstract

We have calculated a large set of detailed binary models and used them to test the observed stellar population ratios that compare the relative populations of blue supergiants, red supergiants and Wolf-Rayet stars at different metallicities. We have also used our models to estimate the relative rate of type Ib/c to type II supernovae. We find, with an interacting binary fraction of about two thirds, that we obtain better agreement between our models and observations than with single stars. We discuss the use of models in determining the nature of supernova progenitors and show the surprising result that many type Ib/c supernova progenitors are less luminous and less massive in our models than the observed population of Wolf-Rayet stars. © 2008 Copyright International Astronomical Union 2008.

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Eldridge, J. J., Izzard, R. G., & Tout, C. A. (2007). The effect of massive binaries on stellar populations and supernova progenitors. In Proceedings of the International Astronomical Union (Vol. 3, pp. 179–184). Cambridge University Press. https://doi.org/10.1017/s1743921308020474

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