167 citations · 818 across the 21 of their papers we have counts for
22 papers
Flux and fluence effects on the Vacuum-UV photodesorption and photoprocessing of CO ices
Antoine B. Hacquard, Daniela Torres-Diaz, Romain Basalgète +10
CO is a major component of the icy mantles surrounding dust grains in planet and star formation regions. Understanding its photodesorption is crucial for explaining gas phase a…
X-ray photodesorption of complex organic molecules in protoplanetary disks -- I. Acetonitrile CH3CN
R. Basalgète, D. Torres-Díaz, A. Lafosse +7
X-rays emitted from pre-main-sequence stars at the center of protoplanetary disks can induce nonthermal desorption from interstellar ices populating the cold regions. This X-ray ph…
Photodesorption of acetonitrile CH3CN in UV-irradiated regions of the Interstellar Medium: an experimental evidence
Romain Basalgète, Antonio Jesus Ocaña, Géraldine Féraud +5
Pure acetonitrile (CH3CN) and mixed CO:CH3CN and H2O:CH3CN ices have been irradiated at 15K with Vacuum UltraViolet (VUV) photons in the 7-13.6 eV range using synchrotron radiation…
X-ray induced desorption and photochemistry in CO ice
R. Dupuy, M. Bertin, G. Féraud +8
We report an investigation of X-ray induced desorption of neutrals, cations and anions from CO ice. The desorption of neutral CO, by far the most abundant, is quantified and discus…
Mechanism of Indirect Photon-induced Desorption at the Water Ice Surface
R. Dupuy, M. Bertin, G. Féraud +8
Electronic excitations near the surface of water ice lead to the desorption of adsorbed molecules, through a so far debated mechanism. A systematic study of photon-induced indirect…
Vacuum-UV photodesorption from compact Amorphous Solid Water : photon energy, isotopic and temperature effects
Jean-Hugues Fillion, Rémi Dupuy, Géraldine Féraud +9
Vacuum-UV (VUV) photodesorption from water-rich ice mantles coating interstellar grains is known to play an important role in the gas-to-ice ratio in star- and planet-forming regio…
Complex organic molecules in protoplanetary disks: X-ray photodesorption from methanol-containing ices. Part II -- Mixed methanol-CO and methanol-H2O ices
R. Basalgète, R. Dupuy, G. Féraud +8
Astrophysical observations show complex organic molecules (COMs) in the gas phase of protoplanetary disks. X-rays emitted from the central young stellar object (YSO) that irradiate…
Complex organic molecules in protoplanetary disks : X-ray photodesorption from methanol-containing ices. Part I -- Pure methanol ices
R. Basalgète, R. Dupuy, G. Féraud +8
Astrophysical observations show complex organic molecules (COMs) in the gas phase of protoplanetary disks. X-rays emitted from the central young stellar object (YSO) that irradiate…
Desorption of neutrals, cations and anions from core-excited amorphous solid water
R. Dupuy, G. Féraud, M Bertin +7
Core-excitation of water ice releases many different molecules and ions in the gas phase. Studying these desorbed species and the underlying mechanisms can provide useful informati…
The water line emission and ortho-to-para ratio in the Orion Bar photon-dominated region
T. Putaud, X. Michaut, F. Le Petit +2
A very low ortho-to-para ratio (OPR) of 0.1-0.5 was previously reported in the Orion Bar photon-dominated region (PDR), based on observations of two optically thin $\mathrm{H_2^{18…
Vacuum ultraviolet photodesorption and photofragmentation of formaldehyde-containing ices
Géraldine Féraud, Mathieu Bertin, Claire Romanzin +7
Non-thermal desorption from icy grains containing HCO has been invoked to explain the observed HCO gas phase abundances in ProtoPlanetary Disks (PPDs) and Photon Dominated…
Synchrotron radiation interaction with cryosorbed layers for astrochemical investigations
Rémi Dupuy, Mathieu Bertin, Géraldine Féraud +8
Photon-stimulated desorption (PSD) is a process of interest for the two seemingly unrelated topics of accelerator vacuum dynamics and astrochemistry. Here we present an approach to…
X-ray photodesorption from water ice in protoplanetary disks and X-ray dominated regions
Rémi Dupuy, Mathieu Bertin, Géraldine Féraud +10
Water is the main constituent of interstellar ices, and it plays a key role in the evolution of many regions of the interstellar medium, from molecular clouds to planet-forming dis…
The efficient photodesorption of nitric oxide (NO) ices A laboratory astrophysics study
R. Dupuy, G. Féraud, M. Bertin +8
The study and quantification of UV photon-induced desorption of frozen molecules furthers our understanding of the chemical evolution of cold interstellar regions. Nitric oxide (NO…
Nitrile versus isonitrile adsorption at interstellar grain surfaces II. Carbonaceous aromatic surfaces
Mathieu Bertin, Mikhaïl Doronin, Xavier Michaut +6
Almost 20 % of the ~ 200 different species detected in the interstellar and circumstellar media present a carbon atom linked to nitrogen by a triple bond. Of these 37 molecules, 30…
Spectrally-resolved UV photodesorption of CH4 in pure and layered ices
Rémi Dupuy, Mathieu Bertin, Géraldine Féraud +6
Context. Methane is among the main components of the ice mantles of insterstellar dust grains, where it is at the start of a rich solid-phase chemical network. Quantification of th…
Confinement effects on the nuclear spin isomer conversion of HO
Pierre-Alexandre Turgeon, Jonathan Vermette, Gil Alexandrowicz +5
The mechanism for interconversion between the nuclear spin isomers (NSI) of HO remains shrouded in uncertainties. The temperature dependence displayed by NSI interconversion ra…
Nitrile versus isonitrile adsorption at interstellar grains surfaces: I - Hydroxylated surfaces
Mathieu Bertin, Mikhaïl Doronin, Jean-Hugues Fillion +7
Almost 20% of the ~ 200 different species detected in the interstellar and circumstellar media present a carbon atom linked to nitrogen by a triple bond. Among these 37 molecules,…
UV photodesorption of methanol in pure and CO-rich ices: desorption rates of the intact molecule and of the photofragments
Mathieu Bertin, Claire Romanzin, Mikhail Doronin +6
Wavelength dependent photodesorption rates have been determined using synchrotron radiation, for condensed pure and mixed methanol ice in the 7 -- 14 eV range. The VUV photodesorpt…
Indirect ultraviolet photodesorption from CO:N2 binary ices - an efficient grain-gas process
Mathieu Bertin, Edith C. Fayolle, Claire Romanzin +7
UV ice photodesorption is an important non-thermal desorption pathway in many interstellar environments that has been invoked to explain observations of cold molecules in disks, cl…
Wavelength-dependent UV photodesorption of pure N2 and O2 ices
Edith C. Fayolle, Mathieu Bertin, Claire Romanzin +7
Ultraviolet photodesorption of molecules from icy interstellar grains can explain observations of cold gas in regions where thermal desorption is negligible. This non-thermal desor…
CO ice photodesorption: A wavelength-dependent study
Edith C. Fayolle, Mathieu Bertin, Claire Romanzin +4
UV-induced photodesorption of ice is a non-thermal evaporation process that can explain the presence of cold molecular gas in a range of interstellar regions. Information on the av…