Surface diffusion of carbon atoms as a driver of interstellar organic chemistry

M Tsuge, G Molpeceres, Y Aikawa, N Watanabe - Nature Astronomy, 2023 - nature.com
Many interstellar complex organic molecules (COMs) are believed to be produced on the
surfaces of icy grains at low temperatures. Atomic carbon is considered responsible for the …

The Molecular Composition of Shadowed Proto-solar Disk Midplanes Beyond the Water Snowline

S Notsu, K Ohno, T Ueda, C Walsh… - The Astrophysical …, 2022 - iopscience.iop.org
The disk midplane temperature is potentially affected by the dust traps/rings. The dust
depletion beyond the water snowline will cast a shadow. In this study, we adopt a detailed …

Collisional Growth and Fragmentation of Dust Aggregates. II. Mass Distribution of Icy Fragments

Y Hasegawa, TK Suzuki, H Tanaka… - The Astrophysical …, 2023 - iopscience.iop.org
By performing N-body simulations, we investigated the fundamental processes of collisions
between dust aggregates composed of submicron-sized icy dust monomers. We examined …

Efficient formation pathway of methyl formate: The role of OH radicals on ice dust

A Ishibashi, H Hidaka, Y Oba, A Kouchi… - The Astrophysical …, 2021 - iopscience.iop.org
Three structural isomers of the C 2 H 4 O 2 molecule, namely, methyl formate (MF; HCOOCH
3), acetic acid (CH 3 COOH), and glycolaldehyde (HOCH 2 CHO), have attracted …

Density and Refractive Index of Carbon Monoxide Ice at Different Temperatures

R Luna, C Millán, M Domingo, C Santonja… - The Astrophysical …, 2022 - iopscience.iop.org
This paper is intended to study the density and the refractive index of the solid carbon
monoxide in the interval 13–28 K to improve our understanding of the dynamics in the …

[HTML][HTML] Mid-IR and VUV spectroscopic characterisation of thermally processed and electron irradiated CO2 astrophysical ice analogues

DV Mifsud, Z Kaňuchová, S Ioppolo, P Herczku… - Journal of Molecular …, 2022 - Elsevier
The astrochemistry of CO 2 ice analogues has been a topic of intensive investigation due to
the prevalence of CO 2 throughout the interstellar medium and the Solar System, as well as …

Nonlinear Outcome of Coagulation Instability in Protoplanetary Disks. II. Dust-ring Formation Mediated by Backreaction and Fragmentation

RT Tominaga, H Tanaka, H Kobayashi… - The Astrophysical …, 2022 - iopscience.iop.org
In our previous work (Paper I), we demonstrated that coagulation instability results in dust
concentration against depletion due to the radial drift and accelerates dust growth locally. In …

In situ cryogenic transmission electron microscopy observation on the formation of hydrogen-ordered hexagonal ices and its astrophysical implications

T Yamazaki, A Kouchi, K Murata… - Monthly Notices of …, 2024 - academic.oup.com
Water ices play a critical role in various astrophysical phenomena and store information
about the thermal history of icy grains. To understand this history, clarifying the formation …

Infrared multiple‐angle incidence resolution spectrometry for vapor‐deposited amorphous water

T Nagasawa, N Numadate… - Journal of Raman …, 2022 - Wiley Online Library
Infrared multiple‐angle incidence resolution spectrometry (IR‐MAIRS) is a recently
developed spectroscopic technique that combines oblique incidence transmission …

Floating in Space: How to Treat the Weak Interaction between CO Molecules in Interstellar Ices

BC Ferrari, G Molpeceres, J Kästner… - ACS Earth and Space …, 2023 - ACS Publications
In the interstellar medium, six molecules have been conclusively detected in the solid state
in interstellar ices, and a few dozen have been hypothesized and modeled to be present in …