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Pre-Mainsequence Stellar Evolution in N-Body Models

  • Anna D. Railton (a1), Christopher A. Tout (a1) and Sverre J. Aarseth (a1)

Abstract

We provide a set of analytic fits to the radii of pre-mainsequence stars in the mass range 0.1 < M/M < 8.0. We incorporate the formulae in N-body cluster models for evolution from the beginning of pre-main sequence. In models with 1 000 stars and high initial cluster densities, pre-mainsequence evolution causes roughly twice the number of collisions between stars than in similar models with evolution begun only from the zero-age main sequence. The collisions are often all part of a runaway sequence that creates one relatively massive star.

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References

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Keywords

Pre-Mainsequence Stellar Evolution in N-Body Models

  • Anna D. Railton (a1), Christopher A. Tout (a1) and Sverre J. Aarseth (a1)

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