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| Paper: |
Statistics and Dynamical Stability of Observed Triple Stars |
| Volume: |
482, 10th Pacific Rim Conference on Stellar Astrophysics |
| Page: |
95 |
| Authors: |
Fang, X. |
| Abstract: |
In this paper, the dynamical stability of totally 127 observed
triple stars and the statistical characteristics on mass parameters,
orbital elements of these systems are studied. Using five stability
criteria and numerical simulation of three-body evolution, most of
the 127 triple stars are determined to be stable. The statistical
conclusions on the observed systems are summarized:
most of the observed triple stars have strong
hierarchical configuration, the systems with very large period ratio
usually have an inner eccentricity close to zero, most systems have
two bodies with comparative mass and there is few system has a low
mass third body. In the end of this paper, the stable systems with
small parameters (e.g. small distance ratio, small eccentricity) are
listed. |
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