LMC and SMC Cepheid candidates periods

Classical Cepheids are not only excellent standard candles, but also invaluable tools to test stellar evolution and pulsation theories. Rates of their pulsation period change,...经典造父变星（Classical Cepheids）不仅是优异的标准烛光，同时也是检验恒星演化与脉动理论的珍贵工具。其脉动周期变化率……