论文标题
高振幅Delta Scuti Star V2455 CYG的新CCD光度检查
New CCD Photometric Investigation of High Amplitude Delta Scuti Star V2455 Cyg
论文作者
论文摘要
在2017年9月的两个晚上进行了可变星V2455 CYG的新的V波段CCD观测值。根据所有最大光和新的最大值，分析了O-C曲线。研究了V2455 CYG的周期变化，并获得了增加周期的速率为（1/p * dp/dt）= 1.99 * 10^（ - 7）yr^（-1）。频率分析表明，V2455 Cyg用径向P模式脉动，基本频率为10.61574 d^（-1）。确定在平均温度下V2455 CYG的物理参数（例如，r = 2.52 R（太阳）和M = 1.92 m（Sun））。该恒星在H-R图中的位置证实V2455 CYG是高振幅Delta Scuti Star。
New V-band CCD observations of variable star V2455 Cyg were performed during two nights in September 2017. According to all times of maximum light and new maxima, the O-C curve was analyzed. The period changes of V2455 Cyg were investigated and the rate of increasing period was obtained to be(1/p* dp/dt) = 1.99 *10^(-7) yr^(-1). Frequency analysis indicated that V2455 Cyg pulsates with the radial p-mode and the fundamental frequency is 10.61574 d^(-1). Physical parameters of V2455 Cyg at mean temperature, were determined (e.g, R = 2.52 R(sun) and M = 1.92 M(sun)). The position of this star in H-R diagram confirms that V2455 Cyg is a high amplitude Delta Scuti star.
