Stellar collisions during binary–binary and binary–single star interactions

  title={Stellar collisions during binary–binary and binary–single star interactions},
  author={John Fregeau and Pokman Cheung and Simon Portegies Zwart and Frederic A. Rasio},
  journal={Monthly Notices of the Royal Astronomical Society},
Physical collisions between stars occur frequently in dense star clusters, either via close encounters between two single stars, or during strong dynamical interactions involving binary stars. Here we study stellar collisions that occur during binary-single and binary-binary interactions, by performing numerical scattering experiments. Our results include cross-sections, branching ratios and sample distributions of parameters for various outcomes. For interactions of hard binaries containing… Expand
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