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beat Cepheid
A Cepheid variable in which two or more nearly equal periods of variability pass into and out of phase with each other, producing a "beat." Also known as double-mode Cepheids, such stars account for nearly half of all Cepheids with periods of 2 to 4 days. Beat periods are typically about 2 hours.
Related entry
• variable stars
Related categories
• TYPES OF STAR
• STELLAR ASTROPHYSICS
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