The Birth of a Massive First-star Binary

  title={The Birth of a Massive First-star Binary},
  author={Kazuyuki Sugimura and Tomoaki Matsumoto and Takashi Hosokawa and Shingo Hirano and Kazuyuki Omukai},
  journal={arXiv: Astrophysics of Galaxies},
We study the formation of massive Pop III binary stars using a newly developed radiation hydrodynamics code with the adaptive mesh refinement and adaptive ray-tracing methods. We follow the evolution of a typical primordial star-forming cloud obtained from a cosmological hydrodynamics simulation. Several protostars form as a result of disk fragmentation and grow in mass by the gas accretion, which is finally quenched by the radiation feedback from the protostars. Our code enables us, for the… 

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