In hub-filament systems, radially converging filaments are known to channel dense gas into hubs where massive stars form, but the contribution of inter-filamentary diffuse gas has remained unclear. In this study, researchers mapped gas motions in the Monoceros R2 star-forming region using carbon monoxide observations. They found that diffuse inter-filamentary gas not only flows directly toward the central hub but also replenishes dense filaments, substantially increasing the total gas reservoir available for massive star formation.

DOI：10.3847/2041-8213/ae6f0f

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Jihye Hwang
Doris Arzoumanian

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KYUSHU UNIVERSITY