Abstract

\(BVI_{c}g^{\prime}r^{\prime}i^{\prime}\) observations of the classical Cepheid V1467 Cyg have been obtained with the 60-cm telescope at the Caucasus Mountain Observatory of the SAI MSU. Invoking all of the available photometry has allowed an \(O-C\) diagram spanning a time interval of 107 years to be constructed. This has made it possible to calculate for the first time the rate of evolutionary decrease in the period of V1467 Cyg, \(dP/dt={-}431.5({\pm}{8.2})\) s yr\({}^{-1}\), in agreement with the results of model calculations for the second crossing of the instability strip. The pulsation stability test proposed by Lombard and Koen has confirmed that the evolutionary changes in the period are real.

中文翻译：

---

$$ \ boldsymbol {BVI} _ {\ boldsymbol {c}} \ boldsymbol {g ^ {\ prime} r ^ {\ prime} i ^ {\ prime}} $$在观测期间观察和寻找进化变化造父变星V1467 Cyg

摘要

\（BVI_ {c} g ^ {\ prime} r ^ {\ prime} i ^ {\ prime} \）是在SAI高加索山天文台用60厘米望远镜获得的经典造父变星V1467 Cyg的观测结果。 MSU。调用所有可用的光度法可以构建跨越107年时间间隔的\（OC \）图。这样就可以首次计算出V1467 Cyg（\（dP / dt = {-} 431.5（{\ pm} {8.2}）\） s yr \\ {{ ^ {-1} \），与不稳定带第二次穿越的模型计算结果一致。Lombard和Koen提出的脉动稳定性测试已证实该时期的演化变化是真实的。