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Fig. 5


Most dominant frequencies of the CDS fCDS normalised by the eigenmode fκ = 0.51 × 10-3   d-1 (triangles), periodically excited with various stellar pulsation periods P but fixed amplitude Δu = 1.0   km   s-1, at the dust nucleation zone r ≈ 2.5   R. The set of eigenfrequencies are indicated by circles. The eigenperiod is labelled with Pκ. The excitation frequencies lie on the solid line and their harmonics on the dash-dotted lines. The grey line separates the irregular (left) from the pulsation-dominated domain (right).

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