Formation of Multiple Protostellar Systems

Details Formation of Multiple Protostellar Systems Formation of Multiple Protostellar Systems

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...273..175k&link_type=abstract

Astronomy and Astrophysics, Vol.273, NO. 1/JUNI, P. 175, 1993

Astronomy and Astrophysics

Astrophysics

18

Hydrodynamics, Stars: Formation, Binaries Interstellar Medium: Clouds

Scientific paper

Fluid-dynamic calculations of the isothermal collapse of a rotating protostellar core are presented which predict the formation of multiple fragments. The initial model is assumed to have a moderate central condensation with a small amplitude, m = 2 perturbation. Initial fragmentation into a low-mode configuration results as a consequence of the gravitational growth of non-axisymmetric instabilities. Rotation-driven fragmentation, later in the evolution, involves a time-sequential formation of new condensations from other dense regions of the collapsing core. The deforming effects of rotation could be a leading mechanism for determining the irregular geometry of the resulting systems as observed in nature.

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