Search for Evolutionary Changes in the Period of the Classical Cepheid CE Pupстатья
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Дата последнего поиска статьи во внешних источниках: 3 ноября 2021 г.
Аннотация:The reduction of all the available photometry for the Cepheid CE Pup has allowed its O − Cdiagram spanning a time interval of 128 years to be constructed. This has made it possible for the first time to calculate the rate of evolutionary increase in the period, dP/dt = +155.3 (±13.1) s yr −1 , in agreement the results of model calculations for the third crossing of the instability strip. The pulsation stability test proposed by Lombard and Koen confirmed that the evolutionary change in the period is real.