Massive donors in interacting binaries: effect of metallicity

  title={Massive donors in interacting binaries: effect of metallicity},
  author={Jakub Klencki and Gijs Nelemans and Alina G. Istrate and Onno Rudolf Pols},
  journal={Astronomy \& Astrophysics},
Metallicity is known to significantly affect the radial expansion of a massive star: the lower the metallicity, the more compact the star, especially during its post-main sequence evolution. Our goal is to study this effect in the context of binary evolution. Using the stellar-evolution code MESA, we computed evolutionary tracks of massive stars at six different metallicities between 1.0 Z⊙ and 0.01 Z⊙. We explored variations of factors known to affect the radial expansion of massive stars (e.g… 
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