论文标题
发现$β$ CEP脉动在Eclipsing Binary V453 Cygni中的发现
Discovery of $β$ Cep pulsations in the eclipsing binary V453 Cygni
论文作者
论文摘要
V453 CYG是一种黯然失色的二进制，在一个偏心的短期轨道中包含14个MSUN和11个MSUN星。我们已经使用苔丝数据在该系统中发现了$β$ CEP型脉动。我们在主星中确定了七个重要的脉动频率，在2.37和10.51 d $^{-1} $之间。这些频率包括六个频率，这些频率被远离轨道频率的谐波，表明它们是潮汐扰动的模式。我们已经确定了系统的物理特性至高准确：V453 CYG A是具有精确质量测量的第一个$β$ CEP脉动脉冲。该系统是控制大量单恒星和二进制恒星进化的物理过程的重要示踪剂。
V453 Cyg is an eclipsing binary containing 14 Msun and 11 Msun stars in an eccentric short-period orbit. We have discovered $β$ Cep-type pulsations in this system using TESS data. We identify seven significant pulsation frequencies, between 2.37 and 10.51 d$^{-1}$, in the primary star. These include six frequencies which are separated by yet significantly offset from harmonics of the orbital frequency, indicating they are tidally-perturbed modes. We have determined the physical properties of the system to high precision: V453 Cyg A is the first $β$ Cep pulsator with a precise mass measurement. The system is a vital tracer of the physical processes that govern the evolution of massive single and binary stars.
