3D Dynamics of Self-Gravitating Molecular Clouds

Details 3D Dynamics of Self-Gravitating Molecular Clouds 3D Dynamics of Self-Gravitating Molecular Clouds

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.1502s&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #15.02; Bulletin of the American Astronomical Society, Vol. 28, p.1292

Astronomy and Astrophysics

Astronomy

Scientific paper

In the present work, we model the dynamics and evolutionary processes which lead to the formation of complex structure in star-forming molecular clouds. Our physical model consists of an extended, self-gravitating slab which is initially in unstable equilibrium. By providing wavelike perturbations we observe the evolution and dynamics of different wave modes. The dispersion relation is calculated by repeatedly measuring the growth rate of the modes in the linear regime using a 3D eulerian scheme with 1.6 million zones. We find that the numerically measured dispersion relation is in excellent agreement with recent analytic calculations. In addition to verifying the analytic calculations, we follow the development of cloud structures into the nonlinear regime, and study the effects of several different equations of state.

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