Planets form and obtain their compositions in disks of gas and dust around young stars. The
chemical compositions of these planet-forming disks regulate all aspects of planetary …

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 …

We report the detection for the first time in space of three new pure hydrocarbon cycles in
TMC-1: cC 3 HCCH (ethynyl cyclopropenylidene), cC 5 H 6 (cyclopentadiene), and cC 9 H 8 …

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 …

The interstellar medium of galaxies is the reservoir out of which stars are born and into
which stars inject newly created elements as they age. The physical properties of the …

▪ Abstract Our understanding of the evolution of organic molecules, and their voyage from
molecular clouds to the early solar system and Earth, has changed dramatically …

New models of the chemistry of dense interstellar clouds are presented in which both gas-
phase and grain-surface chemistry occur. The dust-grain and gas temperatures are fixed at …

▪ Abstract All neutral atomic hydrogen gas and a large fraction of the molecular gas in the
Milky Way Galaxy and external galaxies lie in PDRs, and PDRs are the origin of most of the …

Aims. We present a new version of the UMIST Database for Astrochemistry, the fourth such
version to be released to the public. The current version contains some 4573 binary gas …

▪ Abstract Recent advances in the understanding of the chemical processes that occur
during all stages of the formation of stars, from the collapse of molecular clouds to the …