The R-matrix method is an embedding procedure which is based on the division of space
into an inner region where the physics is complicated and an outer region for which greatly …

The BASECOL2012 database is a repository of collisional data and a web service within the
Virtual Atomic and Molecular Data Centre (VAMDC, http://www. vamdc. eu). It contains rate …

Noble gas molecules have not hitherto been detected in space. From spectra obtained with
the Herschel Space Observatory, we report the detection of emission in the 617.5-and …

Context. The global context of making numerous data produced by researchers available
requires collecting and organising the data, assigning meaningful metadata, and presenting …

Aims. The HIFI instrument onboard Herschel has allowed high spectral resolution and
sensitive observations of ground-state transitions of three molecular ions: the methylidyne …

We report on Herschel/PACS observations of absorption lines of OH+, H 2 O+ and H 3 O+ in
NGC 4418 and Arp 220. Excited lines of OH+ and H 2 O+ with E lower of at least 285 and …

Context. The abundances of interstellar CH+ and SH+ are not well understood as their most
likely formation channels are highly endothermic. Several mechanisms have been proposed …

We present state-selected measurements of rotational cooling and excitation rates of CH+
molecular ions by inelastic electron collisions. The experiments are carried out at a …

Molecular R-matrix calculations are performed to give rotational excitation rates for electron
collisions with linear molecular ions. Results are presented for CO+, HCO+, NO+ and H2+ …

Aims. Excitation of far-infrared and submillimetric molecular lines may originate from
nonreactive collisions, chemical formation, or far infrared, near-infrared, and optical …