Although first considered as too diluted for the formation of molecules in-situ and too harsh
an environment for their survival, the interstellar medium has turned out to host a rich palette …

In this review/tutorial we explore planetary nebulae as a stage in the evolution of low-to-
intermediate-mass stars, as major contributors to the mass and chemical enrichment of the …

Unidentified infrared emission bands are ubiquitous in many astronomical sources. These
bands are widely, if not unanimously, attributed to collective emissions from polycyclic …

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 report the detection, for the first time in space, of a new non-functionalised hydrocarbon
cycle in the direction of TMC-1: oC 6 H 4 (ortho-benzyne). We derive a column density for …

The James Webb Space Telescope (JWST, Gardner et al. 2006) is a 6.5 m space telescope
launched in 2021 December and is developed by the National Aeronautics and Space …

Chemical equilibrium has proven extremely useful for predicting the chemical composition of
AGB atmospheres. Here we use a recently developed code and an updated thermochemical …

A multitude of phenomena—such as the chemical enrichment of the Universe, the mass
spectrum of planetary nebulae, white dwarfs and gravitational wave progenitors, the …

Laboratory studies play a crucial role in understanding the chemical nature of the interstellar
medium (ISM), but the disconnect between experimental timescales and the timescales of …

Dust grains play a central role in the physics and chemistry of cosmic environments. They
influence the optical and thermal properties of the medium due to their interaction with stellar …