Stars in multiple systems offer a unique opportunity to learn about stellar formation and evolution. As they settle down into stable configurations, multiple systems occur in a variety of hierarchies and a wide range of separations between the components. We examine 11 known and 11 newly discovered multiple systems including at least one M dwarf with the latest astrometric data from Gaia Early Data Release 3 (EDR3). We find that the individual components of systems at very wide separations are often multiple systems themselves.

中文翻译：

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一个是最孤独的数字：冷矮星的多样性

多个系统中的恒星提供了一个了解恒星形成和演化的独特机会。当它们稳定到稳定的配置中时，多个系统出现在各种层次结构和组件之间的广泛分离中。我们使用来自 Gaia Early Data Release 3 (EDR3) 的最新天体测量数据检查了 11 个已知和 11 个新发现的多个系统，其中包括至少一个 M 矮星。我们发现，系统的各个组件在非常宽的分离范围内通常是多个系统本身。