The radiation from stars and active galactic nuclei (AGNs) creates photodissociation regions
(PDRs) and X-ray-dominated regions (XDRs), where the chemistry or heating is dominated …

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

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 …

We present a new method to accurately describe the ionization fraction and the size
distribution of polycyclic aromatic hydrocarbons (PAHs) within astrophysical sources. To this …

Context. We have modelled the abundance distribution and IR emission of the first 3
members of the coronene family in the north-west photodissociation region of the well …

Context. The H 3+ molecule has been detected in many lines of sight within the central
molecular zone (CMZ) with exceptionally large column densities and unusual excitation …

The first detection of molecules in space (CH, CH+, and CN) occurred in the late 1930s.
Since then over 180 different molecular species have been detected (http://www …

Quantum tunnelling is a phenomenon which becomes relevant at the nanoscale and below.
It is a paradox from the classical point of view as it enables elementary particles and atoms …

In the ever growing demand of future energy resources, hydrogen production reaction has
attracted much attention among the scientific community. In this work, we have investigated …

Mass spectrometry measurements show the formation of highly superhydrogenated
derivatives of the polycyclic aromatic hydrocarbon molecule coronene through H atom …