This review covers the work of the three decades since the first spectroscopic identification
of the H 3+ molecular ion outside of the laboratory in 1988, in the auroral atmosphere of the …

The ExoMol database (www. exomol. com) provides extensive line lists of molecular
transitions which are valid over extended temperature ranges. The status of the current …

The discovery of extrasolar planets is one of the major scientific advances of the last two
decades. Hundreds of planets have now been detected and astronomers are beginning to …

The H3+ molecular ion plays a fundamental role in interstellar chemistry, as it initiates a
network of chemical reactions that produce many molecules,. In dense interstellar clouds …

Abstract Our Solar System formed∼ 4.6 billion years ago from the collapse of a dense core
inside an interstellar molecular cloud. The subsequent formation of solid bodies took place …

Using an absorption line from the metastable (J, K)=(3, 3) level of H together with other lines
of H and CO observed along several sight lines, we have discovered a vast amount of high …

The dissociative recombination of an H 3+ ion after it is struck by a low-energy electron is
important for understanding observations of H 3+ in diffuse interstellar clouds. At the same …

This paper presents the first dissociative recombination (DR) measurement of electrons with
rotationally and vibrationally cold H 3+ ions. A dc discharge pinhole supersonic jet source …

The interaction of matter with its environment is the driving force behind the evolution of 99%
of the observed matter in the universe. The majority of the visible universe exists in a state of …

Ion-neutral reactions are driving the formation of small molecules in the gas phase of
interstellar clouds, where hydrogen molecules and their ions are by far the most important …