Author(s): | Wielen, R. |

Title: | Numerical Studies of the Gravitational Problem of N-Bodies |

Source: | In: Recent Advances in Dynamical Astronomy, Proc. Conf., Cortina d'Ampezzo, Italy, 9-21 August 1972; B.D. Tapley, V. Szebehely (eds.); Astrophys. Space Sci. Lib. 39, Reidel, Dordrecht, p. 209-210 |

Year: | 1973 |

Abstract: | The dynamical evolution of stellar systems containing a few hundred stars can be studied by numerically integrating the equations of motion of all the stars as an N-body problem. From a methodic point of view, these numerical N-body experiments belong to two branches of dynamical astronomy: celestial mechanics and stellar dynamics. As in celestial mechanics, the basic procedure is the computation of individual orbits of mass points in the exact gravitational field of all the other bodies. However, these individual orbits are not the information at which we aim in stellar dynamics. Hence, we finally deduce from all the individual orbits the desired statistical information about the evolution of the system as a whole ('macroscopic properties'). Of course, the individual orbits also give valuable insight into the 'microscopic' behaviour of a stellar system |

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