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
  • 31 Downloads

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 

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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