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Fig. 3


Complete identification of the ridges, automatically derived from the eigenfrequencies extracted with a height-to-background ratio greater than 3. Each colour corresponds to a different mode degree (radial modes in red, dipole modes in dark blue,  = 2 modes in green,  = 3 modes in light blue). The solid grey lines superimposed on the ridges indicate the fits of ε for each radial order (with indication of the radial order n). The fits of d01, d02 and d03 are superimposed on the respective ridges (respectively dash-dot, dot, and dash lines for  = 1, 2, and 3). The dark dashed lines, derived from the scaling law dealing with the oscillation excess power, delineate the region where the modes have noticeable amplitudes (Mosser et al. 2010).

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