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| EPoS Contribution |
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Dynamical view of the hub-filaments systems
Sandra Trevino Chalmers, Gothenburg, SE | |
| High-mass stars and star clusters commonly form within hub-filament systems. Mon R2, at a distance of 778pc, harbors one of the closest of these systems, making it an excellent target of study. We used ALMA to conduct an observational study in MonR2 to build a picture of its global dynamical properties. We identified a number of filaments transporting material from the molecular cloud to the central hub. These filaments survive within the hub, where they twist to form a spiral-like structure. We find signs of rotation and gas infall motions following the spiral-features, suggesting that they are feeding a central cluster with massive star formation ongoing (with a mass accretion rate of few 10-3 Msun/yr). Overall, the picture of MonR2 favors a scenario of a massive star-forming region that has been formed via a global non-isotropic collapse. To extend our study to other sources, we have obtained new ALMA observations towards a number of nearby hub-filament systems. These sources have similar properties than MonR2 and will enable us, for the first time, to construct a view of the dynamical characteristics of the hub-filament systems. | |
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| Caption: Spiral-like structure in MonR2 as seen with C18O (red), SO (green), H40a (blue). | |
| Collaborators: A. Sanchez-Monge, Cologne U., DE J. Kainulainen, Chalmers, SE A. Fuente, OAN, ES S. Suri, MPIA, DE J. Ballesteros-Paredes, IRyA, MX P. Hennebelle, CNRS, FR P. Didelon, CNRS, FR N. Schneider, Cologne U, DE F. Motte, CNRS, FR P. Tremblin, CNRS, FR |
Key publication
Suggested Session: Molecular Clouds |