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Fig. 4


Left panels: Lagrangian perturbation of temperature (δT/T), nuclear generation rate (ε), and the mass fractions of hydrogen and helium (XH and XHe, respectively) as functions of log (1 − Mr/M) for dipole g1-mode (upper panel) and g3-mode (lower panel), respectively, for the model with Z = 0.0001, M = 0.535 M and Teff = 11 000 K. The eigenfunction is normalized so that the relative displacement in the radial direction is unity at the stellar surface. Middle panels: same as left panels but for the differential work function (dW(r) / dr) for the case in which the ε mechanism is allowed to operate (black dashed curves) and when it is suppressed (red dashed curves). Also, the scaled running work integrals (W(r)) are shown with solid lines. Right panels: same as central panels, but the scaled running work integrals are shown for a wider range of the mass coordinate, along with the Rosseland mean opacity κ (radiative plus conductive).

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