标题： 探索食双星系统IY Aur：首次光度学见解 显示英文标题

标题： Exploring the Eclipsing Binary System IY Aur: First Photometric Insights

摘要： 掩食双星系统在天体物理学中扮演着至关重要的角色，因为它们提供了一种直接测量恒星基本参数的方法。 通过结合高精度的空间观测与地面多色测光数据，这些参数可以被更准确地确定。 在这项研究中，我们利用过境系外行星巡天卫星（TESS）的光变曲线以及在土耳其科学技术研究理事会（TUBITAK）国家天文台的60厘米机器人望远镜（T60）上获得的新UBVRI CCD观测数据，对IY Aur掩食双星系统进行了首次测光分析。 通过详细的测光建模，该系统的主星和次星的质量和半径分别确定为$M_{1}=6.51\pm 0.81\,M_{\odot}$、$M_{2}=5.39\pm 0.87\,M_{\odot}$和$R_{1}=4.15\pm 0.20\,R_{\odot}$、$R_{2}=6.88\pm 0.33\,R_{\odot}$。 主星的光度和表面重力的对数值分别计算为 $\log L_{1}=3.14\pm 0.20\,L_{\odot}$ 和 $\log g_{1}=4.01\pm 0.02$ 厘米-克秒单位制(cgs)，次星的分别为 $\log L_{2}=2.50 \pm 0.22\,L_{\odot}$ 和 $\log g_{2}=3.49\pm 0.03$ 厘米-克秒单位制(cgs)。 此外，IY Aur 的距离被估计为 $d=1690\pm237$ 秒差距(pc)。 显示英文摘要

摘要： Eclipsing binary systems play a vital role in astrophysics, as they provide a direct means of measuring fundamental stellar parameters. By combining high-precision space-based observations with ground-based multicolor photometric data, these parameters can be determined with greater accuracy. In this study, we present the first photometric analysis of the IY Aur eclipsing binary system, using a combination of the Transiting Exoplanet Survey Satellite (TESS) light curve and new UBVRI CCD observations obtained with the 60 cm robotic telescope (T60) at the TUBITAK National Observatory. Through detailed photometric modeling, the masses and radii of the system's primary and secondary components were determined as $M_{1}=6.51\pm 0.81\,M_{\odot}$, $M_{2}=5.39\pm 0.87\,M_{\odot}$, and $R_{1}=4.15\pm 0.20\,R_{\odot}$, $R_{2}=6.88\pm 0.33\,R_{\odot}$, respectively. The logarithmic values of luminosity and surface gravity were calculated as $\log L_{1}=3.14\pm 0.20\,L_{\odot}$ and $\log g_{1}=4.01\pm 0.02$ cgs for the primary component, and $\log L_{2}=2.50 \pm 0.22\,L_{\odot}$ and $\log g_{2}=3.49\pm 0.03$ cgs for the secondary component. Furthermore, the distance to IY Aur was estimated as $d=1690\pm237$ pc.