Galaxy as dissipative N -- body system. Chemical aspect

Details Galaxy as dissipative N -- body system. Chemical aspect Galaxy as dissipative N -- body system. Chemical aspect

1998-01-12

arxiv.org/abs/astro-ph/9801089v1

Astronomy and Astrophysics

Astrophysics

2 pages, LaTeX, no figures, uses conf_iap.sty, to appear in the Proceedings of the 13th IAP Colloquium: Structure and Evolutio

Scientific paper

The evolving galaxy is considered as a system of baryonic fragments embedded into the static dark nonbaryonic (DH) and baryonic (BH) halo and subjected to gravitational and viscous interactions. Though the chemical evolution of each fragment is treated in the frame of one -- zone model with instantaneous recycling, the local gas density and, therefore, its star formation (SF) activity is influenced by other interacting fragments. In spite of its simplicity the model provides a realistic description of the process of galaxy formation and evolution over the Hubble timescale.

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