Summary
The most striking aspect of the β Cep and 53 Per stars is their complexity. Whereas in Cepheid-type variables, a dominant mechanism excites a dominant mode (or two at most) of a dominant kind of pulsation, in β Cep stars, a number of mechanisms and processes are at work. Still there is hope that the mystery will soon be unraveled by the careful application of a combination of observational and theoretical techniques. These same techniques will provide a better understanding of B stars in general: their interior and atmosphere, mass loss and coronal heating.
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Percy, J.R. Beta Cephei and related stars. Space Sci Rev 27, 313–322 (1980). https://doi.org/10.1007/BF00168314
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DOI: https://doi.org/10.1007/BF00168314