Stability analysis, non-linear pulsations and mass loss of models for 55 Cygni (HD 198478)
Monthly Notices of the Royal Astronomical Society(2016)
摘要
55 Cygni is a variable supergiant. Recent observational studies revealed that this star pulsates in pressure, gravity and strange modes. The pulsations seem to be associated with episodes of mass loss. In this paper we present a theoretical study of stellar models with parameters close to that of 55 Cygni. A linear non-adiabatic stability analysis with respect to radial perturbations is performed ...
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关键词
stars: massive,stars: mass-loss,stars: oscillations,supergiants,stars: winds, outflows
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