The collapse of a fast rotating interstellar gas cloud

Details The collapse of a fast rotating interstellar gas cloud The collapse of a fast rotating interstellar gas cloud

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.203..491n&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 203, May 1983, p. 491-515.

Other

9

Astronomical Models, Gravitational Collapse, Interstellar Gas, Molecular Clouds, Angular Momentum, Hydrodynamics, Mathematical Models, Rotating Matter

Scientific paper

Numerical simulations have been performed of the hydrodynamical collapse of an axisymmetric, isothermal cloud which is initially a uniform sphere in fast rigid-body rotation. The cloud undergoes repeated collapses and bounces. Each time it collapses, it becomes a highly flattened disc which is fairly homogeneous in the equatorial plane; an off-axis density wave appears, moves away from the centre and disappears. It is found that centrifugal bounces do not lead to the formation of a permanent ring-like structure contrary to the results of some other investigators. It has been found that the numerical model obtained may be interpreted in terms of a simplified analytical model.

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