## The dynamic decay of young few-body stellar systems## I. The effect of a mass spectrum for N = 3, 4, and 5
^{1} European Southern Observatory, Alonso de Cordova 3107,
Vitacura, Casilla 19001, Santiago 19, Chile^{2} Max-Planck-Institut für Extraterrestrische Physik,
D-85740 Garching bei München, Germany^{3} Department of Astronomy, SW319, Indiana University,
Bloomington, Indiana 47405, USA
We investigate the dynamic decay of nonhierarchical few-body
systems, with an emphasis on applications to young stellar multiples
formed by fragmenting cloud collapse. A chain regularization scheme is
used to integrate orbits for 300 or more crossing times in order to
guarantee that most systems are fully decayed. In this paper, we
consider cases where the number
This article contains no SIMBAD objects. ## Contents- 1. Introduction
- 1.1. Classic work
- 1.2. Fragmentation calculations
- 1.3. Observational motivation
- 1.4. Goals
- 2. Methodology
- 2.1. Numerical approach
- 2.2. Initial conditions
- 2.3. Mass spectra
- 2.4. Numerical integrations
- 2.5. Hierarchical virtual-particle analysis
- 2.6. Analytic approach
- 3. Numerical results
- 3.1. General
- 3.2. Length of integration
- 3.3. Equal masses
- 3.3.1.
- 3.3.2. and 5
- 3.4. Realistic mass spectra
- 3.4.1. The -distribution
- 3.4.2. Escape speeds
- 3.4.3. Binary and multiple characteristics
- 4. Applications
- 5. Conclusions
- Acknowledgements
- References
© European Southern Observatory (ESO) 1998 Online publication: September 30, 1998 |