BETA CEPHEI VARIABLE

'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.
The prototype of these variable stars, Beta Cephei shows variation in apparent magnitude from +3.16 to +3.27 with a period of 4.57 hours.
These stars should not be confused with Cepheid variables, which are named after Delta Cephei.

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References

References

Samus N.N., Durlevich O.V., et al. ''Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.)''