Fig. 8
Survival time for a three-planet EMS system for planet masses of 10−7 M⊙ as a functionof the initial period ratio. The red curve corresponds to the survival time estimate (Eq. (81)), the blue vertical line to the Hill-stability limit (Petit et al. 2018), the orange vertical line to the two-planet MMR overlap criterion (Wisdom 1980). The dashed black (resp. green) lines are the two-planet first(resp. second)-order MMR. The light orange rectangles show an estimate of the width of the two-planet MMR (Petit et al. 2017).
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