Statistics – Computation
Scientific paper
May 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...91...14y&link_type=abstract
Icarus (ISSN 0019-1035), vol. 91, May 1991, p. 14-28.
Statistics
Computation
14
Computational Astrophysics, Dynamic Stability, Protostars, Star Formation, Stellar Mass, Stellar Rotation, Ideal Gas, Stellar Cores, Stellar Evolution, Stellar Mass Accretion, Stellar Models
Scientific paper
Evolutionary model sequences have been constructed for the presumptively isentropic and monatomic ideal-gas equilibrium cores encountered during the accretion phase of rotating low-mass protostars. The use of a protostellar core model with rotational kinetic energy/gravitational potential energy ratio value of 0.157 as the initial three-dimensional hydrodynamics code configuration, confirmation is obtained for numerous multiarmed spiral disturbances; of these, a fourfold-symmetry disturbance is found to have the fastest growth rate growth rate, dominating the linear regime. It is concluded that even when disks are of only limited radial extent, rapidly growing nonaxisymmetric instabilities emerge upon formation of Keplerian disks.
Cohl Howard S.
Durisen Richard H.
Imamura James N.
Toman Joseph
Yang Shelby
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