Within the precise cosmological framework provided by the Λ-cold dark matter model and
standard Big Bang nucleosynthesis, the chemical evolution of the pregalactic gas can now …

The process of molecule formation in the primordial gas is considered in the framework of
Friedmann cosmological models from redshift z= 1e4 to z= 0. First, a comprehensive …

We study the formation of the first generation of stars in the standard cold dark matter model.
We use a very high resolution cosmological hydrodynamic simulation that achieves a …

When our universe was about 380,000 years old, it underwent a period of recombination
and produced the first neutral atoms. This event, the recombination epoch, represents a …

In this work we review the efforts made in the last 10 years to understand the neutral and
ionic chemistry of LiH. The relevance of most of the studies on this subject is due to the …

The chemistry of deuterium, as well as that of hydrogen and helium, in the
postrecombination era of the expanding early universe is presented. A thorough survey of all …

The direct collapse model for the formation of massive seed black holes in the early
Universe attempts to explain the observed number density of supermassive black holes …

Molecular cooling is essential for studying the formation of substructure of dissipative dark-
matter halos that may host compact objects such as black holes. Here, we analyze the …

We investigate how uncertainties in the chemical and cooling rate coefficients relevant for a
metal-free gas influence our ability to determine the critical ultraviolet field strength required …

Studies of the formation of metal-free Population III stars usually focus primarily on the role
played by H2 cooling, on account of its large chemical abundance relative to other possible …