210 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Hokkaido UniversityJP59 papers
- Sapporo UniversityJP12 papers
- The University of TokyoJP12 papers
- Kyoto UniversityJP8 papers
- Hokkaido University of EducationJP6 papers
- Kyushu UniversityJP6 papers
- The University of OsakaJP5 papers
- Tohoku UniversityJP5 papers
- Centre National de la Recherche ScientifiqueFR4 papers
- Mie UniversityJP4 papers
- Tokyo Institute of TechnologyJP4 papers
- Health Sciences University of HokkaidoJP3 papers
12 papers · 1 filter
The First Star-by-star -body/Hydrodynamics Simulation of Our Galaxy Coupling with a Surrogate Model
Keiya Hirashima, Michiko S. Fujii, Takayuki R. Saitoh +9
A major goal of computational astrophysics is to simulate the Milky Way Galaxy with sufficient resolution down to individual stars. However, the scaling fails due to some small-sca…
Hydrogenation of acetaldehyde on interstellar ice analogs reveals limited destruction
Germán Molpeceres, Thanh Nguyen, Yasuhiro Oba +1
We sought to determine which are the main hydrogenation paths of acetaldehyde (CH3CHO). As a partially unsaturated molecule, CH3CHO can have links with more hydrogenated species, l…
Violent starbursts and quiescence induced by FUV radiation feedback in metal-poor galaxies at high-redshift
Kazuyuki Sugimura, Massimo Ricotti, Jongwon Park +2
JWST observations of galaxies at suggest that they are more luminous and clumpier than predicted by most models, prompting several proposals on the physics of star for…
Modelling Deuterated Isotopologues of Methanol toward the Pre-Stellar Core L1544
W. Riedel, O. Sipilä, E. Redaelli +4
Aims. We aim to improve a previous model for the prediction of column densities and deuterium fractions of non- and singly deuterated methanol. Thereby, we try to identify crucial…
Determination of the branching ratio of CHOH + OH reaction on water ice surface at 10 K
Atsuki Ishibashi, Hiroshi Hidaka, W. M. C. Sameera +2
The CHO and CHOH radicals can be important precursors of complex organic molecules (COMs) in interstellar dust. The COMs presumably originating from these radicals were abu…
Direct Determination of the Activation Energy for Diffusion of OH Radicals on Water Ice
A. Miyazaki, M. Tsuge, H. Hidaka +2
Using a combination of photostimulated desorption and resonance-enhanced multiphoton ionization methods, the behaviors of OH radicals on the surface of interstellar ice analog was…
Penetration of Non-energetic Hydrogen Atoms into Amorphous Solid Water and their Reaction with Embedded Benzene and Naphthalene
Masashi Tsuge, Akira Kouchi, Naoki Watanabe
Chemical processes on the surface of icy grains play an important role in the chemical evolution in molecular clouds. In particular, reactions involving non-energetic hydrogen atom…
Measurements of Ortho-to-para Nuclear Spin Conversion of H2 on Low-temperature Carbonaceous Grain Analogues: Diamond-like Carbon and Graphite
Masashi Tsuge, Akira Kouchi, Naoki Watanabe
Hydrogen molecules have two nuclear spin isomers: ortho-H2 and para-H2. The ortho-to-para ratio (OPR) is known to affect chemical evolution as well as gas dynamics in space. Theref…
Transmission Electron Microscopy Study of the Morphology of Ices Composed of H2O, CO2, and CO on Refractory Grains
Akira Kouchi, Masashi Tsuge, Tetsuya Hama +15
It has been implicitly assumed that ices on grains in molecular clouds and proto planetary disks are formed by homogeneous layers regardless of their composition or crystallinity.…
Rapid ortho-to-para nuclear spin conversion of H2 on a silicate dust surface
Masashi Tsuge, Toshinobu Namiyoshi, Kenji Furuya +3
The H2 molecule has two nuclear spin isomers, the so-called ortho and para isomers. Nuclear spin conversion (NSC) between these states is forbidden in the gas phase. The energy dif…
Thermal desorption of formamide and methylamine from graphite and amorphous water ice surfaces
Henda Chaabouni, Stephan Diana, Thanh Nguyen +1
Formamide (NH2CHO) and methylamine (CH3NH2) are known to be the most abundant amine-containing molecules in many astrophysical environments. The presence of these molecules in the…
Water Formation through a Quantum Tunneling Surface Reaction, OH + H2, at 10 K
Y. Oba, N. Watanabe, T. Hama +3
The present study experimentally demonstrated that solid H2O is formed through the surface reaction OH + H2 at 10 K. This is the first experimental evidence of solid H2O formation…