Galaxy formation - Gas dynamics versus stellar dynamics

Details Galaxy formation - Gas dynamics versus stellar dynamics Galaxy formation - Gas dynamics versus stellar dynamics

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nyasa.617..178c&link_type=abstract

(Nonlinear astrophysical fluid dynamics; Proceedings of the 5th Florida Workshop in Nonlinear Astronomy, Gainesville, FL, Oct. 5

Physics

Fluid Dynamics

Galactic Evolution, Gas Dynamics, Star Formation Rate, Stellar Motions, Galactic Clusters, Gravitational Collapse, Velocity Distribution

Scientific paper

Stellar-dynamic and gasdynamic models of the formation and evolution of galaxies are examined in a comparative review, and typical numerical results are presented graphically. The growth and distribution of angular momentum of a stellar galaxy inside an environment of clusters are followed through expansion and collapse; the evolution of the velocity field is traced; and particular attention is given to gas simulations using a soft-particle hydrodynamical code similar to that of Monaghan and Lattanzio (1985). It is shown that the model correctly describes the organization of motion in the collapsing galaxy, but that details smaller than the particle size employed are not trustworthy. The need for simulations with larger numbers of smaller particles is indicated.

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