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Hydrodynamic Simulations of Galaxy Formation

A. A. Thoul
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Abstract

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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A. A. Thoul. 1994-12-09. Hydrodynamic Simulations of Galaxy Formation. https://doi.org/10.1063/1.48371

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