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- W2076749563 abstract "The Fourier spectra of nonlinear oscillations of models of population II Cepheids are investigated. It is found that frequency resonance between the fundamental mode and an overtone leads to an increase of the mechanical energy of this overtone by 2-3 times. It is also shown that in each cycle of pulsations a traveling wave, propagating into the interior, is generated in the outer layers of the envelope. The appearance of secondary bumps in the velocity and light curves coincides with the onset of resonance between the fundamental mode and the second overtone. Moreover, the time of formation of the bump coincides with the arrival on the surface of a compression wave reflected from the core. The reason for the formation of the secondary bumps must evidently be sought in the interaction of these two mechanisms." @default.
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- W2076749563 date "1986-01-01" @default.
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- W2076749563 title "Investigation of resonances in models of population II Cepheids" @default.
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- W2076749563 doi "https://doi.org/10.1007/bf01005574" @default.
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