论文标题
基于苔丝数据的接触二元二元CET的光度测试
Photometric Investigation of Contact Binary DY Cet Based on TESS Data
论文作者
论文摘要
我们介绍了接触二进制系统DY CET及其轨道周期变化的行为的苔丝光曲线的光度分析。使用Wilson-Devinney代码进行了光曲线和发布的径向速度数据分析。由于使用径向速度数据同时分析光曲线，系统组件的质量和半径分别确定为M1 = 1.55（2）MS，M2 = 0.55（1）MS和R1 = 1.51（2）RS，R2 = 0.95（2）RS。系统的接触程度（F）和质量比（Q）分别确定为23％和0.355（12）。在本研究中，第一次对Dy CET进行了轨道周期分析。据观察，轨道时期随着抛物线的降低而具有类似鼻窦的变化。为了解释轨道周期的变化，提出了与保守质量的假设之间的质量转移，并将转移速率计算为dm/dt = 1.1x10^（ - 7）ms/yr。提出了可能的第三个成分来解释鼻窦样变化，并确定了看不见的成分的质量为0.13 M. Dy CET系统的年龄估计为3.77 GYR。
We present a photometric analysis of the TESS light curve of contact binary system DY Cet and the behavior of its orbital period variation. The light curve and published radial velocity data analysis was performed using Wilson-Devinney code. As a result of simultaneous analysis of light curve with radial velocity data, the masses and radii of the system's components were determined as M1=1.55(2)Ms, M2=0.55(1)Ms and R1=1.51(2)Rs, R2=0.95(2)Rs, respectively. The degree of contact (f) and mass ratio (q) of the system were determined as 23% and 0.355(12), respectively. Orbital period analysis of DY Cet was conducted for the first time in this study. It was observed that the orbital period has a sinus-like change with decreasing parabola. To explain the orbital period change, mass transfer between components is proposed with the assumption of conservative mass, and the transfer rate was calculated to be dM/dt=1.1x10^(-7) Ms/yr. A possible third component is suggested for explaining the sinus-like change, and the mass of the unseen component was determined as 0.13 Ms. The age of the DY Cet system was estimated as 3.77 Gyr.
