Abstract
It is shown that the coincidence between the pulsation periods and the critical frequencies found by Fadeyev (1982) results from strong effects of non-adiabaticity on the linear pulsation periods in low surface gravity models. If we apply the boundary condition of running waves for super-critical pulsations, it is found that the linear growth-rates are considerably affected by the boundary condition.
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References
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Aikawa, T. Pulsation periods and critical frequencies in low gravity yellow supergiant models. Astrophys Space Sci 104, 405–408 (1984). https://doi.org/10.1007/BF00650313
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DOI: https://doi.org/10.1007/BF00650313