Binary and multiple star formation
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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.
KeywordsFormation Mechanism Star Formation Observational Evidence Binary Formation Paper Detail
- 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
- Chapman, S. J.et al, 1992 The formation of binary and multiple star systems.Nature,359, 207Google Scholar