Dynamical Stability of Triple Stars

Details Dynamical Stability of Triple Stars Dynamical Stability of Triple Stars

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000astl...26..250o&link_type=abstract

Astronomy Letters, Volume 26, Issue 4, pp.250-260

Astronomy and Astrophysics

Astronomy

9

Scientific paper

The dynamical stability of 38 observed hierarchical triple stars with known orbital elements of the internal and external binary subsystems and component masses is considered. Four different criteria of dynamical stability are used. The observed stability parameters and their critical values are calculated by taking into account errors in the orbital elements and component masses. Most triple systems are stable. According to some criteria, several triple stars (ADS 440, ξ Tau, λ Tau, ADS 3358, VV Ori, ADS 10157, HZ Her, Gliese 795, ADS 15971, and ADS 16138) may be dynamically unstable. This result is probably associated with unreliability of the empirical stability criteria and/or with errors in the observed quantities.

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