Water is a fundamental molecule in the universe. On Earth, water exists in all three phases:
gas, liquid, and solid (ice). Liquid water facilitates many chemical reactions as a solvent …

Until a decade ago, the only anion observed to play a prominent role in astrophysics was H–
. The bound–free transitions in H–dominate the visible opacity in stars with photospheric …

This is the third of a series of articles reporting critically evaluated rotational–vibrational line
positions, transition intensities, and energy levels, with associated critically reviewed labels …

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 …

Aims. Our goal is to study the different morphologies associated to the interaction of the
stellar winds of AGB stars and red supergiants with the interstellar medium (ISM) to follow …

Phosphine (PH 3) was tentatively identified a few years ago in the carbon star envelopes
IRC+ 10216 and CRL 2688 from observations of an emission line at 266.9 GHz attributable …

Context. The inner layers of circumstellar envelopes around asymptotic giant branch stars
are sites where a variety of processes such as thermochemical equilibrium, shocks induced …

Aims. This work deals with the rotational excitation of ortho/para-H 2 O with para/ortho-H 2
so that thermalized de-(excitation) rate coefficients up to 1500 K for the first 45th level of …

Aims. We model the chemistry of the inner wind of the carbon star IRC+ 10216 and consider
the effects of periodic shocks induced by the stellar pulsation on the gas to follow the non …

Linear carbon chains are common in various types of astronomical molecular sources.
Possible formation mechanisms involve both bottom-up and top-down routes. We have …