Underestimation of the tidal force and apsidal motion in close binary systems by the perturbative approach: Comparisons with non-perturbative models

Open Access

Fig. 8.

Mapping of the acceleration perturbation discrepancy for our grid of low-mass stars and intermediate-high mass stars. The colour code denotes the difference of perturbed acceleration between the perturbative and our non-peturbative approach as a function of the models k₂ and orbital separation.

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