Abstract
We investigate the contraction of rotating clouds with three-dimensional numerical simulation. To keep high resolution in the high density region we adopt zooming coordinates. Once a rotating cloud begins to contract dynamically, the central density of the cloud increases unboundedly. During the dynamical collapse the cloud changes its form from sphere to disk and from disk to bar. We find that, as far as the cloud collapses, the amplitude of the bar mode perturbation increases in proportional to pc 1/6at the cloud center. The length of the bar is larger than the Jeans length by a factor of 10. The bar will fragment into pieces which will evolve into seeds of binaries.
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© 2001 Springer Science+Business Media Dordrecht
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Matsumoto, T., Hanawa, T. (2001). Gravitational Collapse of Rotating Clouds: Bar Formation in a Self-Similarly Contracting Disk. In: Ebisuzaki, T., Makino, J. (eds) New Horizons of Computational Science. Astrophysics and Space Science Library, vol 263. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0864-8_30
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DOI: https://doi.org/10.1007/978-94-010-0864-8_30
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-3848-5
Online ISBN: 978-94-010-0864-8
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