AI 中文总结
本研究确认6个罕见的2+2构型双食四合星系统，利用TESS测光、巡天数据及100余夜观测推导其轨道，使已确认的此类系统轨道总数达64个。
AI 中文摘要
本研究确认了6个具有两组食现象且为2+2构型的四合星系统，这类双食系统是相当罕见的恒星群体。我们收集了所有可用的测光数据并进行详细分析，除了用于建模两个内食双星光变曲线的高精度TESS测光数据外，还使用了测光巡天数据，并开展了超过100个夜次的专属观测，这些观测主要用于探测轨道周期的长期变化。借助这些数据，我们通过食时变（eclipse timing variations）推导了内双星的互轨道。所研究的系统包括：CzeV1254（周期分别为0.715348天、0.362593天，互周期15.6年）、ASASSN-V J070838.27-171952.9（周期分别为4.300490天、3.767235天，互周期4年）、ASASSN-V J091951.17-593306.9（周期分别为2.668674天、14.342218天，互周期0.95年）、WISE J100820.07-731554.0（周期分别为0.368315天、7.945339天，互周期3.8年）、ASASSN-V J143536.01-721459.4（周期分别为7.353842天、6.368567天，互周期27.4年）、Corot 310284765（周期分别为1.875418天、2.371126天，互周期22.6年）。部分双星显示出明显的偏心轨道，我们还估算了它们的拱线运动周期。加上这6个新系统，已确认的2+2构型四合星系统轨道总数增至64个。
英文摘要
The study presents a confirmation of six quadruples with two sets of eclipses that have the 2+2 architecture. These so-called doubly eclipsing systems still present a quite rare group of stars. We collected all available photometric data and carried out a detailed analysis of them. In addition to the precise TESS photometry used to model the light curves for both inner eclipsing binaries, photometric survey data were also used, and more than 100 nights of our own dedicated observations were carried out. These were mainly used for the detection of the long-term evolution of orbital periods. Thanks to these data, we were able to derive the mutual orbits of the inner doubles via eclipse timing variations. The systems studied are: CzeV1254 (periods 0.715348 d + 0.362593 d, mutual period 15.6 yr); ASASSN-V J070838.27-171952.9 (4.300490 d + 3.767235 d, 4 yr); ASASSN-V J091951.17-593306.9 (2.668674 d + 14.342218 d, 0.95 yr); WISE J100820.07-731554.0 (0.368315 d + 7.945339 d, 3.8 yr); ASASSN-V J143536.01-721459.4 (7.353842 d + 6.368567 d, 27.4 yr); and Corot 310284765 (1.875418 d + 2.371126 d, 22.6 yr). Some of the binaries show significantly eccentric orbits. We also estimated their apsidal motion periods. With our six new systems, the number of confirmed orbits of 2+2 quadruples has been increased to 64 in total.
Comments9 pages, 4 tables, 7 figures, published in: 2025A&A...702A.234Z (Astronomy & Astrophysics, Volume 702, id.A234, 9 pp.)
Journal ref2025A&A...702A.234Z
DOI：10.1051/0004-6361/202554792
