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Protostellar Collapse Induced by Compression |
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| Authors: | Hennebelle Patrick Belloche Arnaud Whitworth Anthony André Philippe |
| Institution: | 1. Laboratoire de radioastronomie millimétrique, UMR, Paris, France 2. Department of Physics and Astronomy, Cardiff University, Wales, UK 3. CEA, DSM, DAPNIA, Service d'Astrophysique, C.E. Saclay, Gif-sur-Yvette Cedex, France |
| Abstract: | We present numerical simulations of the evolution of low-mass, isothermal, molecular cores which are subjected to an increase in external pressure. If the external pressure increases very slowly, the core approaches instability quite quasi-statically. However, for faster compressions, a compression wave is driven into the core (Hennebelle, P., Whitworth, A., Gladwin, P. and André, P.: 2003a MNRAS 340, 870). Quantitative comparisons with observational velocity and density profiles are presented. The consequences of this compression for the fragmentation of the cloud is investigated and discussed. |
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