The first results of a new survey are reported, which explores the 2nd data release of the ESA-Gaia mission, in order to search for stellar companions of (Community) TESS Objects of Interest and to characterize their properties. In total, 193 binary and 15 hierarchical triple star systems are presented, detected among 1391 target stars, which are located at distances closer than about 500pc around the Sun. The companions and the targets are equidistant and share a common proper motion, as it is expected for gravitationally bound stellar systems, proven with their accurate Gaia astrometry. The companions exhibit masses in the range between about 0.08$M_\odot$ and 3$M_\odot$ and are most frequently found in the mass range between 0.13 and 0.6$M_{\odot}$. The companions are separated from the targets by about 40 up to 9900au, and their frequency continually decreases with increasing separation. While most of the detected companions are late K to mid M dwarfs, also 5 white dwarf companions were identified in this survey, whose true nature is revealed by their photometric properties.

中文翻译：

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盖亚寻找苔丝感兴趣对象的恒星伴星

报告了一项新调查的第一个结果，该调查探索了 ESA-Gaia 任务的第二次数据发布，以寻找（社区）TESS 感兴趣对象的恒星伴星并表征它们的特性。总共提出了 193 个双星系统和 15 个分层三重星系统，在 1391 颗目标星中检测到，这些目标星的距离小于太阳周围约 500 pc 的距离。伴星和目标是等距的，并共享一个共同的自行运动，正如受引力束缚的恒星系统所预期的那样，并通过其精确的盖亚天体测量法得到了证明。伴星的质量在大约 0.08$M_\odot$ 和 3$M_\odot$ 之间的范围内，并且最常见于 0.13 和 0.6$M_{\odot}$ 之间的质量范围内。同伴与目标相距约 40 至 9900au，它们的频率随着间隔的增加而不断降低。虽然大多数探测到的伴星是晚 K 到 M M 的矮星，但在这次调查中也发现了 5 颗白矮星伴星，它们的真实性质通过它们的光度学特性来揭示。