Abstract

The reduction of all the available photometry for the Cepheid SU Sct has allowed its \(O-C\) diagram spanning a time interval of 60 years to be constructed. Six abrupt changes in the period have been detected. The pulsation stability test proposed by Lombard and Koen (1993) has confirmed that the changes in the period are real. The absolute magnitude of SU Sct is \(M_{V}\simeq{-}0\overset{\textrm{m}}{.}32\), confirming that it belongs to BL Her-type Population II Cepheids.

中文翻译：

---

SU Sct 时期的变化，一个人口 II 造父变星

摘要

造父变星 SU Sct 的所有可用光度测量的减少使得其跨越 60 年时间间隔的\(OC\)图得以构建。已检测到该时期的六个突然变化。Lombard 和 Koen (1993) 提出的脉动稳定性测试已经证实了周期的变化是真实的。SU Sct 的绝对星等为\(M_{V}\simeq{-}0\overset{\textrm{m}}{.}32\)，证实它属于 BL Her-type Population II Cepheids。