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The first spectroscopic and photometric solutions of the eclipsing binary, V335 ser

机译：日食二元光谱V335 ser的第一个光谱和光度学解决方案

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We present the first analyses of the radial velocity and BV light curves for the eclipsing binary system, V335 Ser. This double-lined eclipsing binary has an eccentricity of 0.14. BV photometric light curves and double-lined radial velocities were solved simultaneously using an improved version of the Wilson-Devinney computer program. The masses and radii of the component stars were obtained as M_1 = 2.02 ± 0.01 M_⊙, M 2 = 1.84 ± 0.02 M_⊙, R_1 = 2.03 ± 0.02 R_⊙ and R_2 = 1.60 ± 0.01 R ⊙. We estimated the semi-amplitudes of the radial velocity curves of the primary and secondary components as K_1 = 106.31 ± 0.88 km s~(-1) and K_2 = 116.94 ± 0.88 km s~(-1), respectively. As determined by absolute visual magnitude and corrections for interstellar extinction, the distance of the system from earth was found to be d = 219 ± 24 pc. The existence of apsidal motion is presented as means of eclipse time, and the apsidal motion rate was found to be ω?_(obs)=0.01302±0.02563degcycle-~1. The corresponding apsidal motion period was found to be U = 261 ± 514 years. Using the absolute properties and apsidal motion parameters obtained from period analysis, we computed the observational and theoretical internal structure constants to be logk_(2,obs) = -1.53 and logk_(2,theo) = -2.44, respectively. We also present the evolutionary status of the component stars in an H-R diagram using solar metallicity and four helium content values. Both component stars are slightly evolved from the ZAMS.
机译：我们介绍了日食二元系统V335 Ser的径向速度和BV光曲线的首次分析。这种双线的日食二进制文件的偏心率为0.14。使用Wilson-Devinney计算机程序的改进版本，可以同时求解BV光度曲线和双线径向速度。获得的组成星的质量和半径为M_1 = 2.02±0.01M_⊙，M 2 = 1.84±0.02M_⊙，R_1 = 2.03±0.02R_⊙和R_2 = 1.60±0.01 R⊙。我们估算出主要和次要分量径向速度曲线的半振幅分别为K_1 = 106.31±0.88 km s〜（-1）和K_2 = 116.94±0.88 km s〜（-1）。由绝对目视幅度和星际灭绝校正确定，系统与地球的距离为d = 219±24 pc。存在蚀运动的时间可以作为蚀食时间的手段，其运动速率为ω？_（obs）= 0.01302±0.02563degcycle-〜1。发现相应的爬升运动周期为U = 261±514年。使用从周期分析中获得的绝对属性和原子运动参数，我们将观测和理论内部结构常数分别计算为logk_（2，obs）= -1.53​​和logk_（2，theo）= -2.44。我们还使用太阳金属性和四个氦含量值在H-R图中显示了组成恒星的演化状态。这两个组成恒星都是从ZAMS轻微演化而来的。

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