Hub-filament systems are ubiquitous in molecular clouds. Most dense clumps and cores are formed in filaments and play a key role in star formation process. Therefore, investigating hub-filament system is one of the best ways to understand high-mass star formation.
in the hub. The clumps in the hub will accrete more materials from the surroundings, and they become more massive and are more likely to form high-mass star clusters., with the high-mass clump AGAL323.459-0.079 located at the hub center. Large scale accretion flows were observed in F-west and F-south, indicating that they were transporting gas to the central clump.
In the hub, the gas velocity gradients increased significantly, and it showed a V-shaped structure in the Positon-Velocity diagram, which traces the accelerated gas motions undergoing gravitational collapse.model in the study, with a hub-junction mass between 1,000 M
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