Disentangling UV photodesorption and photoconversion rates of H2O ice at 20 K-Measured with laser desorption post ionization mass spectrometry
M Bulak, DM Paardekooper, G Fedoseev… - Astronomy & …, 2023 - aanda.org
Context. The nondissociative ultraviolet photodesorption of water ice is a nonthermal
desorption mechanism required to account for detected abundances of gas-phase water …
desorption mechanism required to account for detected abundances of gas-phase water …
Vacuum UV photodesorption of organics in the interstellar medium: an experimental study of formic acid HCOOH and methyl formate HCOOCH 3-containing ices
Being a potential process that could explain gas phase abundances of so-called complex
organic molecules (COMs) in the cold interstellar medium (ISM), the UV photon-induced …
organic molecules (COMs) in the cold interstellar medium (ISM), the UV photon-induced …
X-ray photo-desorption of NH3 and N2 from ammonia ices: Mechanisms and yields in protoplanetary disks
Context. Ammonia is detected both in the gas phase and in the ices of protoplanetary disks.
However, its gas phase abundances are still difficult to reproduce via chemical modelling …
However, its gas phase abundances are still difficult to reproduce via chemical modelling …
Photodesorption of CO ices: Rotational and translational energy distributions
AB Hacquard, R Basalgète, S Del Fré… - The Journal of …, 2024 - pubs.aip.org
This study investigates the translational and rovibrational energy of vacuum-ultraviolet
(VUV) photodesorbed CO molecules from a CO polycrystalline ice (15 K) at∼ 8 eV. The …
(VUV) photodesorbed CO molecules from a CO polycrystalline ice (15 K) at∼ 8 eV. The …
Chemistry across dust and gas gaps in protoplanetary disks: modelling the co-spatial molecular rings in the HD 100546 disk
M Leemker, AS Booth, EF van Dishoeck… - arXiv preprint arXiv …, 2024 - arxiv.org
High-resolution observations show that typically both the dust and the gas in nearby
extended protoplanetary disks are structured, possibly related to radial and azimuthal …
extended protoplanetary disks are structured, possibly related to radial and azimuthal …
A multigrain-multilayer astrochemical model with variable desorption energy for surface species
Context. Interstellar surface chemistry is a complex process that occurs in icy layers that
have accumulated onto grains of different sizes. The efficiency of the surface processes …
have accumulated onto grains of different sizes. The efficiency of the surface processes …
Cold water emission cannot be used to infer depletion of bulk elemental oxygen [O/H] in disks
M Ruaud, U Gorti - arXiv preprint arXiv:2406.04457, 2024 - arxiv.org
We re-examine the constraints provided by Herschel Space Observatory data regarding cold
water emission from protoplanetary disks. Previous disk models that were used to interpret …
water emission from protoplanetary disks. Previous disk models that were used to interpret …
Penetration of nonenergetic hydrogen atoms into amorphous solid water and their reaction with embedded benzene and naphthalene
M Tsuge, A Kouchi, N Watanabe - The Astrophysical Journal, 2022 - iopscience.iop.org
Chemical processes on the surface of icy grains play an important role in the chemical
evolution in molecular clouds. In particular, reactions involving nonenergetic hydrogen …
evolution in molecular clouds. In particular, reactions involving nonenergetic hydrogen …
[PDF][PDF] Freezing conditions in arm disks: sno lines and their effect on the chemical structure of planet-forming disks
M Leemker - 2024 - scholarlypublications …
Earth is the only inhabited planet that we know of to date. Over 5000 exoplanets have been
discovered but whether any of them have life on them is unknown. Some exoplanets are …
discovered but whether any of them have life on them is unknown. Some exoplanets are …