Vol 15, No 11 (2015) / Xu

A first-order dynamical model of hierarchical triple stars and its application

Xing-Bo Xu, Fang Xia, Yan-Ning Fu


For most hierarchical triple stars, the classical double two-body model of zeroth-order cannot describe the motions of the components under the current observational accuracy. In this paper, Marchal’s first-order analytical solution is implemented and a more efficient simplified version is applied to real triple stars. The results show that, for most triple stars, the proposed first-order model is preferable to the zeroth-order model both in fitting observational data and in predicting component positions.


celestial mechanics — binaries: general — stars: kinematics and dy- namics — methods: analytical

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DOI: https://doi.org/10.1088/1674–4527/15/11/008


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