Abstract
The standing oscillation in an isothermal semi-infinite plane-parallel atmosphere has a critical frequency. The significance of critical frequency in the stellar pulsation is discussed briefly. The critical period is calculated for the cepheid instability strip. A star having relatively large radius compared with the mass should be examined by the criterion. The pulsational instability is reduced by the linear running wave.
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Takeuti, M. The critical frequency in the Stellar pulsation theory. Space Sci Rev 27, 413–417 (1980). https://doi.org/10.1007/BF00168327
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DOI: https://doi.org/10.1007/BF00168327