Long-term evolution of the HD 74156 system with I0 = 50° for different values of the argument of the periastron, ω1 = 30°a); 60°b); and 90°c). As a function of time, we plot the mutual inclination I (top) and the eccentricities e1 (blue) and e2 (green) (middle). As a function of ω1, we plot again the mutual inclination, where the color of each dot becomes darker with time (bottom).
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