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The formation of the interstellar complex organic molecules (iCOMs) is a hot topic in astrochemistry. One of the main paradigms trying to reproduce the observations postulates that iCOMs are formed on the ice mantles covering the…

Astrophysics of Galaxies · Physics 2022-03-30 Joan Enrique-Romero , Albert Rimola , Ceccarelli , Piero Ugliengo , Nadia Balucani , Dimitrios Skouteris

Many organic molecules have been observed in the interstellar medium thanks to advances in radioastronomy, and very recently the presence of urea was also suggested. While those molecules were observed, it is not clear what the mechanisms…

Astrophysics of Galaxies · Physics 2018-02-21 Flavio Siro Brigiano , Yannick Jeanvoine , Antonio Largo , Riccardo Spezia

Salt-in-ionic liquid electrolytes have attracted significant attention as potential electrolytes for next generation batteries largely due to their safety enhancements over typical organic electrolytes. However, recent experimental and…

Astrochemistry has been widely developed as a power tool to probe physical properties of the interstellar medium (ISM) in various conditions of the Milky Way (MW) Galaxy, and in near and distant galaxies. Most current studies conventionally…

In the absence of laboratory data, state-of-the-art quantum chemical approaches can provide estimates of the binding energy (BE) of interstellar species with grains. Without BE values, contemporary astrochemical models are compelled to…

Cold chemical reactions between laser-cooled Ca^+ ions and Rb atoms were studied in an ion-atom hybrid trap. Reaction rate constants were determined in the range of collision energies <E_{coll}>/k_B = 20 mK-20 K. The lowest energies were…

The presence of carbon-chain molecules in the interstellar medium (ISM) has been known since the early 1970s and $>130$ such species have been identified to date, making up $\sim 43$% of the total of detected ISM molecules. They are…

Astrophysics of Galaxies · Physics 2024-04-15 Kotomi Taniguchi , Prasanta Gorai , Jonathan C. Tan

Radiative processes play a pivotal role in shaping the thermal and chemical states of gas across diverse astrophysical environments, from the interstellar medium (ISM) to the intergalactic medium. We present a hybrid cooling model for…

This paper summarizes the recent theoretical works on inelastic collisions and chemical reactions at cold and ultracold temperatures involving neutral or ionic systems of atoms and molecules. Tables of zero-temperature rate constants of…

Chemical Physics · Physics 2010-01-28 Goulven Quéméner , Naduvalath Balakrishnan , Alexander Dalgarno

The formation of complex organic molecules in the interstellar medium (ISM) is central to astrochemistry and prebiotic chemistry, as these species may act as precursors to biomolecules essential for life. Although glyceraldehyde…

Astrophysics of Galaxies · Physics 2025-05-06 Anxo Lema-Saavedra , Antonio Fernández-Ramos , Emilio Martínez-Núñez

Urea is a prebiotic molecule that has been detected in few sources of the interstellar medium (ISM) and in Murchison meteorite. Being stable against ultraviolet radiation and high-energy electron bombardment, urea is expected to be present…

Astrophysics of Galaxies · Physics 2023-11-03 J. Perrero , A. Rimola

This review discusses the dynamics of negative ion reactions with neutral molecules in the gas phase. Most anion-molecule reactions proceed via a qualitatively different interaction potential than cationic or neutral reactions. It has been…

Chemical Physics · Physics 2010-06-22 Jochen Mikosch , Matthias Weidemüller , Roland Wester

In the past decade, there has been a significant shift in astrochemistry with a renewed focus on the role of non-thermal processes on the molecular interstellar medium, in particular energetic particles (such as cosmic ray particles and…

Astrophysics of Galaxies · Physics 2026-01-12 Brandt A. L. Gaches , Serena Viti

Ice chemistry in the dense, cold interstellar medium (ISM) is probably responsible for the formation of interstellar complex organic molecules (COMs). Recent laboratory experiments performed at T=4 K have shown that irradiation of CO:N2 ice…

Astrophysics of Galaxies · Physics 2024-01-09 Rafael Martín-Doménech , Alexander DelFranco , Karin I. Öberg , Mahesh Rajappan

Two different ab initio potential energy surfaces are employed to investigate the efficiency of the rotational excitation channels for the polar molecular ion HeH$^+$ interacting with He atoms. We further use them to investigate the quantum…

The modelling of molecular excitation and dissociation processes relevant to astrochemistry requires the validation of theories by comparison with data generated from laboratory experimentation. The newly commissioned Ice Chamber for…

Some observations of warm carbon chain chemistry (WCCC) cores indicate that they are often located near the edges of molecular clouds. This finding may suggest that WCCC is promoted in star-forming cores exposed to radiation from the…

Astrophysics of Galaxies · Physics 2021-03-31 Juris Kalvans

We explore the energetics of the titular reaction, which current astrochemical databases consider open at typical dense molecular (i.e., dark) cloud conditions. As is common for reactions involving the transfer of light particles, we assume…

Astrophysics of Galaxies · Physics 2017-08-09 Daniel W. Savin , Roshan G. Bhaskar , Shreyas Vissapragada , Xavier Urbain

The addition of individual quanta of rotational excitation to a molecule has been shown to markedly change its reactivity by significantly modifying the intermolecular interactions. So far, it has only been possible to observe these…

Chemical Physics · Physics 2024-03-06 Jutta Toscano

Cosmic rays may be linked to the formation of volatiles necessary for prebiotic chemistry. We explore the effect of cosmic rays in a hydrogen-dominated atmosphere, as a proof-of-concept that ion-neutral chemistry may be important for…

Earth and Planetary Astrophysics · Physics 2015-06-18 P. B. Rimmer , Ch. Helling , C. Bilger