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Astrophysics and Space Science

, Volume 216, Issue 1–2, pp 323–324 | Cite as

Binary and multiple star formation

  • J. A. Turner
  • S. J. Chapman
  • A. S. Bhattal
  • M. J. Disney
  • A. P. Whitworth
Article

Abstract

From the growing observational evidence that binary / multiple star formation occurs prior to the pre-main sequence (Mathieu, 1992), it is clear that any theory of star formation MUST also explain binary formation. This paper details two formation mechanisms for binary / multiple stars, which occur simultaneously with protostar formation. The protostellar discs we form have masses 5 → 30M, diameters 200 → 4000 AU. The binaries / multiples have separations 400 → 7500 AU. The formation mechanisms were found by conducting numerical simulations of two cloud collisions, using SPH and Treecode gravity with up to 200,000 particles per calculation and a prescribed cooling equation of state.

Keywords

Formation Mechanism Star Formation Observational Evidence Binary Formation Paper Detail 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Mathieu, R. D., 1992. Disks in the pre-main sequence environment, In:Evolutionary processes in interacting binary stars, p.21, eds Kondo, Y., Sistero, R. F. & Polidan, R. S., Kluwer Academic Publishers, DordrechtGoogle Scholar
  2. Chapman, S. J.et al, 1992 The formation of binary and multiple star systems.Nature,359, 207Google Scholar

Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • J. A. Turner
    • 1
  • S. J. Chapman
    • 1
  • A. S. Bhattal
    • 1
  • M. J. Disney
    • 1
  • A. P. Whitworth
    • 1
  1. 1.Department of Physics and AstronomyUniversity of WalesCardiffUK

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