Molecular hydrogen is the most abundant molecule in the universe. It is the first one to form
and survive photo-dissociation in tenuous environments. Its formation involves catalytic …

The cross-disciplinary field of astrochemistry exists to understand the formation, destruction,
and survival of molecules in astrophysical environments. Molecules in space are …

The evolution of star-forming regions and their thermal balance are strongly influenced by
their chemical composition, which, in turn, is determined by the physicochemical processes …

We present the fifth release of the UMIST Database for Astrochemistry (UDfA). The new
reaction network contains 6173 gas-phase reactions, involving 467 species, 47 of which are …

We present an extended version of the two-phase gas–grain code nautilus to the three-
phase modelling of gas and grain chemistry of cold cores. In this model, both the mantle and …

Since we intend to review experimental and theoretical studies of physicochemical
processes occurring on cosmic dust grains in very cold regions in space, we start with a brief …

Molecular absorption and emission bands dominate the visible, infrared, and submillimeter
spectra of most objects with associated gas. These observations reveal a surprisingly rich …

Diffuse interstellar clouds have long been thought to be relatively devoid of molecules,
because of their low densities and high radiation fields. However, in the past ten years or so …

Crystal growth far from thermodynamic equilibrium is nothing but homoepitaxy-thin film
growth on a crystalline substrate of the same material. Because of the absence of misfit …

We survey the current situation regarding chemical modelling of the synthesis of molecules
in the interstellar medium. The present state of knowledge concerning the rate coefficients …