264 citations · 1.5k across the 48 of their papers we have counts for
50 papers
Interactions and dynamics of metastable triplet-state helium dimer with Ne and Ar
Dibyendu Sardar, François Lique
Helium dimer in its metastable triplet electronic state, He, is a promising candidate for direct laser cooling and precision measurements. Interactions and collision…
Collisional excitation of E- and Z-ethanimine to model cold molecular clouds
Francesca Tonolo, Vivek Vijay, Ernesto Quintas-Sánchez +5
Context. Ethanimine is a prebiotically relevant complex organic molecule that has been proposed as a key precursor of amino acids in the interstellar medium. To date, both its E an…
Collisional excitation of cyclopentadiene by helium. A complete set of rate coefficients and astrophysical applications
Sándor Demes, François Lique, Marcelino Agúndez +1
Complex organic molecules, including large cyclic species, are prevalent in interstellar space and play a key role in various astrochemical processes. Cyclopentadiene (c-C5H6) is a…
Isomer-specific excitation of formic acid in collisions with helium atoms
Karina Sogomonyan, Anzhela Veselinova-Marinova, François Lique +1
An accurate estimation of the molecular abundances of isomers in the interstellar medium (ISM) is necessary to unravel the underlying chemistry and physics. After the recent detect…
Collisional energy transfer in ethanimine + He system
Vivek Vijay, Francesca Tonolo, Ernesto Quintas-Sánchez +5
The ethanimine molecule, CH3CHNH, is one of the prebiotic molecules detected by astronomers in chemically-rich molecular clouds in the Galactic Center. The observations indicate a…
Collisional excitation of HCO by He: Experimental validation of state-of-the-art scattering calculations
Chinmai Sai Jureddy, Sandor Demes, Francesca Tonolo +2
Non-local thermodynamic equilibrium conditions in the interstellar medium require collisional rate coefficients to model astronomical observations; these are usually determined fro…
Carbon chain diversity in L1544 and IRAS 16293-2422: an astrochemical pathfinder study for the SKAO
Lisa Giani, Eleonora Bianchi, Anthony Remijan +12
Astrochemical observations have revealed a surprisingly high level of chemical complexity, including long carbon chains, in the earliest stages of Sun-like star formation. The orig…
Collisional excitation of HCN by CO to refine the modeling of cometary comae
Francesca Tonolo, Ernesto Quintas-Sánchez, Adrian Batista-Planas +2
We present the first dataset of collisional (de)-excitation rate coefficients of HCN induced by CO, one of the main perturbing gases in cometary atmospheres. The dataset spans the…
Rotational excitation cross sections for chloronium based on a new 5D interaction potential with molecular hydrogen
Sándor Demes, Dariusz Kędziera, Alexandre Faure +1
Chloronium (HCl) is an important intermediate of Cl-chemistry in space. The accurate knowledge of its collisional properties allows a better interpretation of the correspon…
First close-coupling study of the excitation of a large cyclic molecule: collision of c-C5H6 with He
Sándor Demes, Cheikh Tidiane Bop, Malek Ben Khalifa +1
Recent astronomical observations revealed an increasing molecular complexity in the interstellar medium through the detection of a series of large cyclic carbon species. To correct…
Imaging Resonance Effects in C + H Collisions using a Zeeman Decelerator
Vikram Plomp, Xu-Dong Wang, Jacek Kłos +4
An intriguing phenomenon in molecular collisions is the occurrence of scattering resonances, which originate from bound and quasi-bound states supported by the interaction potentia…
Rovibrational (de-)excitation of H by He revisited
Hubert Jóźwiak, Franck Thibault, Alexandra Viel +2
Collisional (de-)excitation of H by helium plays an important role in the thermal balance and chemistry of various astrophysical environments, making accurate rate coefficien…
Collisional excitation of PO by -H
F. Tonolo, L. Bizzocchi, V. M. Rivilla +3
We report the derivation of rate coefficients for the rotational (de-)excitation of PO induced by collisions with H. The calculations were performed on a four-dimensional p…
Hyperfine collisional excitation of ammonia by molecular hydrogen
J. Loreau, A. Faure, F. Lique +2
Ammonia is one of the most widely observed molecules in space, and many observations are able to resolve the hyperfine structure due to the electric quadrupole moment of the nitrog…
Cyanopolyyne chemistry in the L1544 prestellar core: new insights from GBT observations
Eleonora Bianchi, Anthony Remijan, Claudio Codella +9
We report a comprehensive study of the cyanopolyyne chemistry in the prototypical prestellar core L1544. Using the 100m Robert C. Byrd Green Bank Telescope (GBT) we observe 3 emiss…
Linking the dust and chemical evolution: Taurus and Perseus -- New collisional rates for HCN, HNC, and their C, N, and H isotopologues
D. Navarro-Almaida, C. T. Bop, F. Lique +18
HCN, HNC, and their isotopologues are ubiquitous molecules that can serve as chemical thermometers and evolutionary tracers to characterize star-forming regions. Despite their impo…
The effect of water and electron collisions in the rotational excitation of HF in comets
J. Loreau, A. Faure, F. Lique
We present the first set of rate coefficients for the rotational excitation of the 7 lowest levels of hydrogen fluoride (HF) induced by collision with water molecules, the dominant…
Benchmarking an improved statistical adiabatic channel model for competing inelastic and reactive processes
Maarten Konings, Benjamin Desrousseaux, François Lique +1
Inelastic collisions and elementary chemical reactions proceeding through the formation and subsequent decay of an intermediate collision complex, with an associated deep well on t…
A SUBLIME 3D Model for Cometary Coma Emission: the Hypervolatile-Rich Comet C/2016 R2 (PanSTARRS)
M. A. Cordiner, I. M. Coulson, E. Garcia-Berrios +12
The coma of comet C/2016 R2 (PanSTARRS) is one of the most chemically peculiar ever observed, in particular due to its extremely high CO/H2O and N2+/H2O ratios}, and unusual trace…
An improved study of HCO+ and He system: interaction potential, collisional relaxation and pressure broadening
F. Tonolo, L. Bizzocchi, M. Melosso +4
In light of its ubiquitous presence in the interstellar gas, the chemistry and reactivity of the HCO+ ion requires special attention. The availability of up-to-date collisional dat…
High-resolution imaging of C + He collisions using Zeeman deceleration and VUV detection
Vikram Plomp, Xu-Dong Wang, François Lique +3
High-resolution measurements of angular scattering distributions provide a sensitive test for theoretical descriptions of collision processes. Crossed beam experiments employing a…
Sulfur gas-phase abundance in dense cores
P. Hily-Blant, G. Pineau des Forêts, A. Faure +1
The abundance of volatile sulfur in dense clouds is long-standing problem in studies of the physics and chemistry of star-forming regions. Sulfur is an important species because it…
Collisional excitation and non-LTE modelling of interstellar chiral propylene oxide
K. Dzenis, A. Faure, B. A. McGuire +7
The first set of theoretical cross sections for propylene oxide (CH3CHCH2O) colliding with cold He atoms has been obtained at the full quantum level using a high-accuracy potential…
Deuterium fractionation of nitrogen hydrides: detections of NHD and ND
A. Bacmann, A. Faure, P. Hily-Blant +5
Although ammonia is an abundant molecule commonly observed towards the dense interstellar medium, it has not yet been established whether its main formation route is from gas-phase…