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Yasuhiro Oba

Associate Professor

Hokkaido University

Japan

Research Interests

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About

Yasuhiro Oba is an Associate Professor at Hokkaido University in Japan. His research areas encompass interstellar ice analogs, chemical pathways involving hydrogen atoms, and the chemical evolution of primordial materials from celestial bodies. Recent articles include studies on extraterrestrial organic compounds and the implications of meteorite analyses for understanding organic synthesis in the early solar system.

Articles (29)

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Collaborators (26)

Frank Ferguson

Senior Research Associate

Catholic University of America

UNITED STATES

Yasuhiro Oba

Research Interests

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Articles (29)

Distribution of purine and pyrimidine bases in Antarctic carbonaceous meteorites

Direct observation of organic molecules in asteroid ryugu revealed by high-resolution atomic force microscope

Distribution of extraterrestrial nucleobases, other N-heterocycles, and their precursors in a sample from asteroid Bennu

A complete set of canonical nucleobases in the carbonaceous asteroid (162173) Ryugu

Experimental and computational studies of the hydrogenation of carbon disulfide (CS2) on ice analogues

Methanol Formation via the Radical–Radical Reaction of OH and CH3 Radicals Undergoing Transient Diffusion on Ice at 10 to 60 K

Bio-essential sugars in samples from asteroid Bennu

Hydrogenation of acetaldehyde on interstellar ice analogs results in limited destruction

Methylamine Formation on Amorphous Solid Water via the Diffusive CH3 + NH2 Reaction as Investigated by the Cs+ Ion Pickup Method

Primordial aqueous alteration recorded in water-soluble organic molecules from the carbonaceous asteroid (162173) Ryugu

Determination of the Branching Ratio of CH<sub>3</sub>OH + OH Reaction on Water Ice Surface at 10 K

Abundant extraterrestrial purine nucleobases in the Murchison meteorite: Implications for a unified mechanism for purine synthesis in carbonaceous chondrite parent bodies

Investigating the impact of x‐ray computed tomography imaging on soluble organic matter in the Murchison meteorite: Implications for Bennu sample analyses

Chemical Pathways of SO2 with Hydrogen Atoms on Interstellar Ice Analogues

Proposed Importance of HOCO Chemistry: Inefficient Formation of CO2 from CO and OH Reactions on Ice Dust

Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu

Chemical evolution of primordial salts and organic sulfur molecules in the asteroid 162173 Ryugu

Uracil in the carbonaceous asteroid (162173) Ryugu

Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium

Ryugu asteroid sample return provides a natural laboratory for primordial chemical evolution

The spatial distribution of soluble organic matter and their relationship to minerals in the asteroid (162173) Ryugu

FAUST. II. Discovery of a Secondary Outflow in IRAS 15398−3359: Variability in Outflow Direction during the Earliest Stage of Star Formation?

Formation of chiral CO polyhedral crystals on icy interstellar grains

Analytical development of seamless procedures on cation-exchange chromatography and ion-pair chromatography with high-precision mass spectrometry for short-chain peptides

FAUST I. The hot corino at the heart of the prototypical Class I protostar L1551 IRS5

UV-ray irradiation never causes amorphization of crystalline CO2: A transmission electron microscopy study

An Experimental Study of Chemical Desorption for Phosphine in Interstellar Ice

Extraterrestrial hexamethylenetetramine in meteorites—a precursor of prebiotic chemistry in the inner solar system

Precometary organic matter: A hidden reservoir of water inside the snow line

Collaborators (26)

Frank Ferguson

Arisa Iguchi

Naoki Watanabe

Yoshiaki Sugimoto

Chikatoshi Honda

Shota Kikuchi

Noriyuki Suzuki

Jose Cernicharo

Daisuke Araoka

Munetake Momose

Thanh Nguyen

Toshihiro Yoshimura

Yoshimasa Watanabe

Takuo OKUCHI

Hiroshi Takeuchi

Tetsuya Hama

Kenta Asahina

Atsuki Ishibashi

W. M. C. Sameera

Kevin Righter

Hiroshi Naraoka

Yoshihiro Furukawa

Tyler Karp

Shu-ichiro Inutsuka

Masashi Tsuge

Yoko Oya

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