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| EPoS Contribution |
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Nested-Grid RMHD Simulation of Proto-stellar Collapse
Kengo Tomida The Graduate University for Advanced Studies, National Astronomical Observatory of Japan, Mitaka, Tokyo, Japan | |
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Abstract: We perform 3-dimensional nested-grid FLD radiation magneto-hydrodynamics simulations with self-gravity to study the early phase of low-mass star formation from a rotating molecular cloud core to a first adiabatic core just before the second collapse begins. We compare the results of the RMHD simulations and MHD simulations with barotropic approximation used in previous simulations. The barotropic approximation fails to reproduce the realistic thermal evolution and the gas tends to attain higher entropy in the RMHD simulations, although they are very close in the innermost region of the cloud. Determining realistic temperature distribution is essential for predicting or interpreting the observations with next generation instruments like ALMA. Thus radiation transfer plays a crucial role even in the low mass regime. | |
| Collaborators: K. Tomisaka, NAOJ, Japan T. Matsumoto, Hosei Univ, Japan K. Ohsuga, NAOJ, Japan M. N. Machida, NAOJ, Japan K. Saigo, NAOJ, Japan |
Key publication
Suggested Session: Cores and Collapse |