Stellar Collisions and the Interior Structure of Blue Stragglers

  title={Stellar Collisions and the Interior Structure of Blue Stragglers},
  author={J. Lombardi and Jessica S. Warren and F. Rasio and A. Sills and A. Warren},
  journal={The Astrophysical Journal},
Collisions of main-sequence stars occur frequently in dense star clusters. In open and globular clusters, these collisions produce merger remnants that may be observed as blue stragglers. Detailed theoretical models of this process require lengthy hydrodynamic computations in three dimensions. However, a less computationally expensive approach, which we present here, is to approximate the merger process (including shock heating, hydrodynamic mixing, mass ejection, and angular momentum transfer… Expand
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