ME plots (see color code) of the extrasolar planetary system HD 154345 for different eccentricities of the known planet (from left to right: e₁ = 0.044,0.09,0.244). The a-i-grid corresponds to the initial conditions of fictitious planets, covering the region of the HZ. In the upper row, we show the calculations obtained by the restricted three-body problem (test-planet is massless) and draw in the width of the HZ (white lines) for e₁ = 0.0, 0.1 and 0.2 (from left to right). In the lower row, we show the calculations obtained by the full three-body problem study for e₁ = 0.044, 0.09, 0.244 (from left to right) and a fictitious planet of 2 M _⊕ .