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Fig. 2


Frequency differences between the observations and the best models, [ ω(observations)−ω(best model) ] /ω (red points), and associated dimensionless energies in arbitrary units (blue squares) for radial oscillations. For a better comparison between modes in different stars, the horizontal axis gives the frequencies normalized to the frequency of maximum power. All nineteen stars are included. The black line is a second-order polynomial fit.

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