Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-10-26
Astronomy and Astrophysics
Astrophysics
3 pages, 2 figures, to appear in the proceeding of IAU Symp. 208 "Astrophysical Supercomputing using Particle Simulations"
Scientific paper
In the current most plausible Cold Dark Matter (CDM) cosmology, larger clumps increase their mass by the progressive merger of smaller clumps. During the evolution, a several merger events, e.g., many minor and a few major merger events, strongly affect the morphology of galaxies as assumed in semi-analytic models. With our physically most detailed high resolution SPH models, we try to tackle the origin of the galaxy morphology. We compute the evolution of 50 over-density peaks in SCDM cosmology and analyzed the obtained properties of the model. We have obtained many different types of star formation history. As a preliminary result, we found the relation between the morphology of the model galaxies and their star formation history. Also we present the global star formation history and metal enrichment history as a function of the redshift, which are obtained by the summing the whole results.
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