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Dynamical stability of triple stars (2000)

Orlov, V. V. ; Petrova, A. V.

Springer

Astronomy letters 26 (2000), S. 250-260

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ISSN: 1562-6873

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1134/1.20389

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