High-mass stars in the Milky Way often exist in systems of two or more stars, but how this multiplicity arises is not clear and so far there have been no unequivocal observations of protostellar systems that could solve the issue. Now, systems of five, four and three stars, and several binaries, have been resolved in a star-forming region, and point to core fragmentation as the likely origin of multiplicity.

中文翻译：

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在大质量恒星形成区观测到的多星系统

银河系中的大质量恒星通常存在于两颗或更多恒星的系统中，但这种多重性是如何产生的尚不清楚，而且迄今为止还没有对原恒星系统的明确观测可以解决这个问题。现在，由五颗、四颗和三颗恒星组成的系统以及几个双星系统已在恒星形成区域中得到解决，并指出核心碎片可能是多重性的起源。