论文标题

从苔丝卫星中乘以黯然失色的候选人

Multiply eclipsing candidates from the TESS satellite

论文作者

Zasche, P., Henzl, Z., Masek, M.

论文摘要

我们介绍了苔丝目标的目录,显示了多个日食。这意味着,在所有这些恒星中,我们都检测到了两组日食,可以为此得出两个独特的时期。这些多个恒星系统可以双重地黯然失色,或者在内部蚀的外壳外显示的三星级共面系统也可以黯然失色。总共发现116个系统是双重的,而25颗恒星被确定为三倍的黯然失色的三元组。我们的分析中未包含几种确认的两个近距离来源的确认混合物。所有这些系统都被识别出从VSX数据库中扫描已知的黯然失色系统,检查其苔丝光曲线。主要对A的平均周期为我们的样本2.7天,而在第二对B中,平均周期为5.3天。几个系统甚至从苔丝数据的短间隔中显示了ETV的明显变化,表明可能的时期变化和短时间的相互轨道。我们还提供了一个证据,表明系统V0871 CEN可能是隔离星系建筑系统(AA-AB)-B-C-D。大多数介绍的系统都充分光明,并显示出足够深的日食,因此我们呼吁对这些非常有趣的倍数进行新的基于地面的观测。由于这种动机,我们的目录还包含两对的临时层,也包括它们的日食深度和从苔丝数据中提取的光曲线形状。例如,这些新的基于地面的观察结果对于通过检测两对ETV在轨道上进一步推导了两对轨道上的相互运动非常有用。

We present the catalogue of the TESS targets showing multiple eclipses. It means that in all of these stars we detected two sets of eclipses, for which their two distinctive periods can be derived. These multiple stellar systems can be either doubly eclipsing quadruples, or triple-star coplanar systems showing besides the inner eclipses also the eclipses on the outer orbit. In total, 116 systems were found as doubly eclipsing, while 25 stars were identified as triply eclipsing triples. Several confirmed blends of two close sources were not included into our analysis. All these systems were identified scanning the known eclipsing systems taken from VSX database checking their TESS light curves. The average period of the dominant pair A is 2.7 days in our sample, while for the second pair B the average period is 5.3 days. Several systems show evident ETV changes even from the short interval of the TESS data, indicating possible period changes and short mutual orbit. We also present an evidence that the system V0871 Cen is probably a septuple-star system of architecture (Aa-Ab)-B-C-D. Most of the presented systems are adequately bright and showing deep enough eclipses, hence we call for new ground-based observations for these extremely interesting multiples. Owing to this motivation our catalog contains besides the ephemerides for both pairs also their depths of eclipses and the light curve shapes as extracted from the TESS data. These new ground based observations would be very useful for further derivation of the mutual movement of both pairs on their orbit via detection of the ETVs of both pairs for example.

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