Hydrodynamic Simulations of Galaxy Formation

Details Hydrodynamic Simulations of Galaxy Formation Hydrodynamic Simulations of Galaxy Formation

1994-12-09

arxiv.org/abs/astro-ph/9412037v1

Astronomy and Astrophysics

Astrophysics

4 pages, uuencoded compressed postscript with figures

Scientific paper

10.1063/1.48371

We have developed an accurate, one-dimensional, spherically symmetric, Lagrangian hydrodynamics/gravity code, designed to study the effects of radiative cooling and photo-ionization on the formation of protogalaxies. We examine the ability of collapsing perturbations to cool within the age of the universe. In contrast to some studies based on order-of-magnitude estimates, we find that cooling arguments alone cannot explain the sharp upper cutoff observed in the galaxy luminosity function. We also look at the effect of a photoionizing background on the formation of low-mass galaxies.

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