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Negligible photodesorption of methanol ice and active photon-induced desorption of its irradiation products
Context. Methanol is a common component of interstellar and circumstellar ice mantles and is often used as an evolution indicator in star-forming regions. The observations of gas-phase methanol inExpand
UV photoprocessing of CO2 ice: a complete quantification of photochemistry and photon-induced desorption processes
Ice mantles that formed on top of dust grains are photoprocessed by the secondary ultraviolet (UV) field in cold and dense molecular clouds. UV photons induce photochemistry and desorption of iceExpand
Thermal desorption of circumstellar and cometary ice analogs
Context. Thermal annealing of interstellar ices takes place in sever al stages of star formation. Knowledge of this process comes from a combination of astronomical observations and laboratoryExpand
First detection of the pre-biotic molecule glycolonitrile (HOCH2CN) in the interstellar medium
Theories of a pre-RNA world suggest that glycolonitrile (HOCH$_2$CN) is a key species in the process of ribonucleotide assembly, which is considered as a molecular precursor of nucleic acids. In thisExpand
Study of the photon-induced formation and subsequent desorption of CH3OH and H2CO in interstellar ice analogs
Context. Methanol and formaldehyde are two simple organic molecules that are ubiquitously detected in the interstellar medium, in both the solid and gaseous phases. An origin in the solid phase and aExpand
The sulfur depletion problem: upper limits on the H2S2, HS·2, and S2 gas-phase abundances toward the low-mass warm core IRAS 16293-2422
A fraction of the missing sulfur in dense clouds and circumstellar regions could be in the form of three species not yet de- tected in the interstellar medium: H2S2, HS2, and S2 according toExpand
Vacuum ultraviolet photolysis of hydrogenated amorphous carbons - III. Diffusion of photo-produced H2 as a function of temperature
Context. Hydrogenated amorphous carbon (a-C:H) has been proposed as one of the carbonaceous solids detected in the interstellar medium. Energetic processing of the a-C:H particles leads to theExpand
Interstellar ice analogs: band strengths of H2O, CO2, CH3OH, and NH3 in the far-infrared region
Context. Whereas observational astronomy now routinely extends to the far-infrared region of the spectrum, systematic laboratory studies are sparse. In particular, experiments on laboratory analogsExpand
Detection of methyl isocyanate (CH3NCO) in a solar-type protostar
We report the detection of the prebiotic molecule CH3NCO in a solar-type protostar, IRAS16293-2422 B. A significant abundance of this species on the surface of the comet 67P/Churyumov-Gerasimenko hasExpand
New measurements on water ice photodesorption and product formation under ultraviolet irradiation
The photodesorption of icy grain mantles has been claimed to be responsible for the abundance of gas-phase molecules toward cold regions. Being water a ubiquitous molecule, it is crucial toExpand