论文标题
TIC 278956474：一个在一个年轻的四个系统中的两个紧密二进制文件，由\ textit {tess}标识
TIC 278956474: Two close binaries in one young quadruple system, identified by \textit{TESS}
论文作者
论文摘要
我们已经确定了一个四核系统，其中有两个在苔丝数据中近距离黯然失色的二进制系统。该对象在盖亚（Gaia）尚未解决，并且作为单个源出现在视差1.08〜 $ \ pm $ 0.01 mas。两种二进制文件均具有可观察的原发性和次要日食，并在苔丝周期1（部门1-13）中进行了监测，落在苔丝连续观看区内。在一个黯然失色的二进制（p = 5.488 d）中，较小的恒星在次要日食期间完全被较大的恒星遮住。在另一个（p = 5.674 d）中，两种日食都是放牧的。使用这些数据，光谱，斑点光度法，SED分析和进化恒星轨道，我们限制了在两个黯淡的二进制文件中四颗恒星的质量和半径。 Li I EW表示年龄为10-50 Myr，外部时期为$ 858^{+7} _ { - 5} $ DAME，我们的分析表明这是已知最紧凑的Young 2+2 Quadruple系统之一。
We have identified a quadruple system with two close eclipsing binaries in TESS data. The object is unresolved in Gaia and appears as a single source at parallax 1.08~$\pm$0.01 mas. Both binaries have observable primary and secondary eclipses and were monitored throughout TESS Cycle 1 (sectors 1-13), falling within the TESS Continuous Viewing Zone. In one eclipsing binary (P = 5.488 d), the smaller star is completely occluded by the larger star during the secondary eclipse; in the other (P = 5.674 d) both eclipses are grazing. Using these data, spectroscopy, speckle photometry, SED analysis and evolutionary stellar tracks, we have constrained the masses and radii of the four stars in the two eclipsing binaries. The Li I EW indicates an age of 10-50 Myr and, with an outer period of $858^{+7}_{-5}$ days, our analysis indicates this is one of the most compact young 2+2 quadruple systems known.
