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

We review the gas-phase chemistry in extraterrestrial space that is driven by reactions with
atomic and molecular ions. Ions are ubiquitous in space and are potentially responsible for …

To date, 204 individual molecular species, comprised of 16 different elements, have been
detected in the interstellar and circumstellar medium by astronomical observations. These …

To date, 241 individual molecular species, composed of 19 different elements, have been
detected in the interstellar and circumstellar medium by astronomical observations. These …

A brief introduction and overview of the astrochemistry of dust, ice and gas and their
interplay is presented. The importance of basic chemical physics studies of critical reactions …

Organohalogens, a class of molecules that contain at least one halogen atom bonded to
carbon, are abundant on the Earth where they are mainly produced through industrial and …

Aims. We describe the assignment of a previously unidentified interstellar absorption line to
ArH+ and discuss its relevance in the context of hydride absorption in diffuse gas with a low …

High resolution line spectra of star-forming regions are mines of information: they provide
unique clues to reconstruct the chemical, dynamical, and physical structure of the observed …

We have used the Atacama Pathfinder Experiment 12 m telescope (APEX) to carry out an
absorption study of submillimeter wavelength rotational ground-state lines of H 35 Cl, H 37 …

We present an analysis of gas densities in the central R= 300 pc of the Milky Way, focusing
on three clouds: GCM–0.02–0.07 (the 50 km s− 1 cloud), GCM–0.13–0.08 (the 20 km s− 1 …