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other users Beta Cephei variables are variable stars which
exhibit variations in their brightness due to pulsations of the
stars' surfaces. The point of maximum brightness roughly
corresponds to the maximum contraction of the star. Typically,
Beta Cephei variables change in brightness by 0.01 to 0.3
magnitudes with periods of 0.1 to 0.6 days. These stars are main
sequence The main sequence is a continuous and distinctive band
of stars that appears on plots of stellar color versus
brightness. These color-magnitude plots are known as
Hertzsprung–Russell diagrams after their co-developers, Ejnar
Hertzsprung and Henry Norris Russell... stars of masses between
about 7 and 20 M The pulsations of Beta Cephei variables are
driven by the kappa mechanism The κ–mechanism is the driving
mechanism behind the changes in luminosity of many types of
pulsating variable stars. Here, the Greek letter kappa is us