KIC 6464285：一个具有准周期食外调制的分层三体系统中的太阳型食双星
KIC 6464285: A Solar-type Eclipsing Binary in a Hierarchical Triple System with Quasi-periodic Out-of-eclipse Modulations
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中文总结 AI 辅助
研究太阳型三体系统KIC 6464285，结合多源数据对其光变曲线、食时变化和径向速度联合分析，给出轨道构型、恒星性质等详细观测约束，发现超级耀斑，为分层三体系统研究提供基准。
中文摘要 AI 辅助
我们首次对太阳型三体系统KIC 6464285进行了详细分析。结合开普勒、苔丝和ZTF的长期高精度测光数据以及郭守敬望远镜的低分辨率光谱和斯隆数字巡天/阿帕奇点天文台星系演化探测器的近红外高分辨率光谱，我们对光变曲线、食时变化（ETV）和径向速度进行了联合分析。光谱分析表明该系统是三线的，内双星的主星是一颗G型主序星，质量比为0.627(7)。光变曲线建模表明内双星是分离的，主星和次星的填充因子分别约为26%和11%，第三颗星的光贡献约为27%。ETV分析显示出显著的光传播时间效应（LTTE），与第三颗伴星的存在一致，其最小质量估计为\(M_{3,\rm min}=0.74(1)~M_\odot\)。光变曲线表现出明显的奥康奈尔效应和准周期变化，表明星斑活动在约131天的时间尺度上调制测光。开普勒观测还发现了30次超级耀斑，每次总能量超过\(10^{34}\)尔格。这项研究对KIC 6464285的轨道构型、恒星性质和磁活动提出了详细的观测约束，为分层三体系统的研究提供了一个基准。
英文摘要
We present the first detailed analysis of the solar-type triple system KIC 6464285. Combining long-term, high-precision photometry from Kepler, TESS, and ZTF with low-resolution spectra from LAMOST and near-infrared high-resolution spectra from SDSS/APOGEE, we performed a joint analysis of the light curves, eclipse timing variations (ETVs), and radial velocities. Spectroscopic analysis reveals the system to be triple-lined, with the inner binary's primary being a G-type main-sequence star and a mass ratio of $0.627(7)$. Light curve modeling indicates that the inner binary is detached, with filling factors of approximately 26\% and 11\% for the primary and secondary, respectively, and a tertiary light contribution of about 27\%. ETV analysis shows a significant light-travel-time effect (LTTE), consistent with the presence of the tertiary companion, whose minimum mass is estimated as $M_{3,\rm min}=0.74(1)~M_\odot$. The light curve exhibits a pronounced O'Connell effect and quasi-periodic variations, indicative of starspot activity modulating the photometry on a $\sim$131-day timescale. Kepler observations further reveal 30 superflares, each with total energies exceeding $10^{34}$ erg. This study presents detailed observational constraints on the orbital configuration, stellar properties, and magnetic activity of KIC 6464285, providing a benchmark for studies of hierarchical triple systems.
