RYOTA FUKAI HP

PUBLICATIONS

PEER-REVIEWED: INTERNATIONAL

[01] Ryota Fukai, Tetsuya Yokoyama and Saya Kagami

Evaluation of the long-term fluctuation in isotope ratios measured by TIMS with the static, dynamic, and multistatic methods: A case study for Nd isotope measurements
International Journal of Mass Spectrometry, 414, 1-7, 2017.

[02] Ryota Fukai and Tetsuya Yokoyama

Neodymium isotope heterogeneity of ordinary and carbonaceous chondrites and the origin of non-chondritic 142Nd compositions in the Earth
Earth and Planetary Science Letters, 474, 206-214, 2017.

[03] Ryota Fukai and Tetsuya Yokoyama

Nucleosynthetic Sr-Nd isotope correlations in chondrites: Evidence for nebular thermal processing and dust transportation in the early Solar System
The Astrophysical Journal, 879 (79), 2019.

[04] Ryota Fukai and Tetsuya Yokoyama

Assessment of the secondary instrumental fractionation in TIMS: Implication for high-precision Nd isotope analysis of geological samples
Geochemical Journal, 53, 333-337, 2019.

[05] Tetsuya Yokoyama, Yuichiro Nagai, Ryota Fukai, and Takafumi Hirata

Origin and evolution of distinct Mo isotopic variabilities within carbonaceous and non-carbonaceous reservoirs
The Astrophysical Journal, 883 (62), 2019.

[06] Ryota Fukai and Tetsuya Yokoyama

Heterogeneous distribution of presolar grains in the early solar system
JPS Conference Proceedings, 31 (011017), 1-4, 2020.

[07] Tetsuya Yokoyama, Ryota Fukai, and Masaki Nakahara

Separation of heavy lanthanoids by flash column chromatography for precise determination of Er and Yb isotope compositions in rock samples
Geostandards and Geoanalytical Research, 44 (2), 265-285, 2020.

[08] Ryota Fukai and Sota Arakawa

Assessment of Cr isotopic heterogeneities of volatile-rich asteroids based on multiple planet formation models
The Astrophysical Journal, 908 (64), 2021.

[09] Tetsuya Yokoyama, Meenakshi Wadhwa, Tsuyoshi Iizuka, Vinai Rai, Ikshu Gautam, Yuki Hibiya, Yuki Masuda, Makiko K. Haba, Ryota Fukai et al. Press release

Water circulation in Ryugu asteroid affected the distribution of nucleosynthetic isotope anomalies in returned sample
Science Advances, 9, 45, 2023.

[10] Kaori Hirata, Tomohiro Usui, Ryuki Hyodo, Hidenori Genda, Ryota Fukai, David J. Lawrence, Nancy L. Chabot, Patrick N. Peplowski, and Hiroki Kusano

Mixing model of Phobos’ bulk elemental composition for the determination of its origin: Multivariate analysis of MMX/MEGANE data
Icarus, 410, 115891, 2023.

[11] Ryota Fukai, Tomohiro Usui, Wataru Fujiya, Yoshinori Takano, Ken-ichi Bajo et al. ASRG HP

Curation protocol of Phobos sample returned by Martian Moons eXploration
Meteoritics and Planetary Science, 59 (2), 321–337, 2024.



PEER-REVIEWED: JAPANESE

[01] 深井 稜汰

核合成起源同位体二分性と初期太陽系の進化
遊・星・人, 29 (1), 14–21, 2020.

[02] 荒川 創太, 深井 稜汰, 本間 和明

原始太陽系星雲における同位体不均質性から読み解く微惑星・惑星形成史
遊・星・人 (Invited review), 31 (1), 50–67, 2022.

[03] 深井 稜汰, 菊地 翔太, 久保 勇貴, 坂谷 尚哉, 嶌生 有理, 木村 駿太, 尾崎 直哉, 村上 豪 Topics (ASRG HP)

太陽系小天体探査の現状と今後の展開: 理学・工学双方の課題から考える
遊・星・人, 32 (4), 288–295, 2023.



PEER-REVIEWED: Hayabusa2

Curation

[01] Toru Yada et al. inc. Ryota Fukai

Preliminary analysis of the Hayabusa2 samples returned from C-type asteroid Ryugu
Nature Astronomy, 6, 214–220, 2022.

[02] Eizo Nakamura et al. inc. Ryota Fukai Press release

On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective
Proceedings of the Japan Academy, Series B, 98 (6), 227–282, 2022.

[03] Motoo Ito et al. inc. Ryota Fukai

A pristine record of outer Solar System materials from asteroid Ryugu’s returned sample
Nature Astronomy, 6, 1163–1171, 2022.


Initial analysis: chemistry team

[01] Tetsuya Yokoyama et al. inc. Ryota Fukai Press release

Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites
Science, 379, 6634, 2022.

[-] Zachary A. Torrano et al. inc. Ryota Fukai

Neodymium-142 deficits and samarium neutron stratigraphy of C-type asteroid (162173) Ryugu
Meteoritics and Planetary Science, in press.

[-] Nao Nakanishi et al. inc. Ryota Fukai

Nucleosynthetic s-Process Depletion in Mo from Ryugu samples returned by Hayabusa2
Geochemical Perspectives Letters, 28, 31–36, 2023.

[-] Mayu Morita et al. inc. Ryota Fukai

Analysis of Cation Composition in Dolomites on the Intact Particles Sampled from Asteroid Ryugu
Analytical Chemistry, 96, 170–178, 2023.



ARTICLES

[01] 深井 稜汰

New face
遊・星・人, 29 (1), 54-55, 2020.

[02] 深井 稜汰

博士・修士論文タイトル紹介
遊・星・人, 29 (2), 97, 2020.

[03] 深井 稜汰

博士論文抄録: Nucleosynthetic Sr and Nd isotope heterogeneities in the early Solar System
地球化学, 54 (2), 97–98, 2020.

[04] Toru Yada et al. inc. Ryota Fukai

Hayabusa Asteroid Sample Catalog 2020
JAXA Special Publication, JAXA-SP-20-004E, 1–1339, 2021.

[05] Toru Yada et al. inc. Ryota Fukai

Hayabusa2 Asteroid Sample Catalog 2021
JAXA Special Publication, JAXA-SP-21-006E, 1–397, 2022.

[06] Toru Yada et al. inc. Ryota Fukai

Hayabusa Asteroid Sample Catalog 2021
JAXA Special Publication, JAXA-SP-21-007E, 1–15, 2022.

[07] Toru Yada et al. inc. Ryota Fukai

Hayabusa2 Asteroid Sample Catalog 2022
JAXA Special Publication, JAXA-SP-22-004E, 1–63, 2023.

[08] Rei Kanemaru et al. inc. Ryota Fukai

Hayabusa Asteroid Sample Catalog 2022
JAXA Special Publication, JAXA-SP-22-005E, 1–35, 2023.

[09] Akiko Miyazaki et al. inc. Ryota Fukai

Hayabusa Asteroid Sample Catalog 2023
JAXA Special Publication, JAXA-SP-23-007E, 1–61, 2024.

[10] Rei Kanemaru et al. inc. Ryota Fukai

Hayabusa Asteroid Sample Catalog 2023
JAXA Special Publication, JAXA-SP-23-006E, 1–39, 2024.

[11] 圦本 尚義, 橘 省吾, 渡邉 誠一郎, はやぶさ2初期分析チーム

火の鳥「はやぶさ」未来編 その28 〜はやぶさ2試料の化学的初期分析から わかってきたこと〜
遊・星・人, 31 (4), 286–297, 2022.

[12] 矢田 達 ほか inc. 深井 稜汰

火の鳥「はやぶさ」未来編 その26 ~リュウグウ帰還試料のキュレーション~
遊・星・人, 31 (2), 153–164, 2022.

[13] 金丸 礼, 矢田 達, 田原 瑠衣, 中山 悠, 深井 稜汰 ほか

JAXAキュレーション施設における大気非暴露 X線CT分析システムの導入
遊・星・人, 33 (1), 78–86, 2024.

[-] 深井 稜汰

火星衛星サンプルリターン
先カンブリア大全, 2026.



PEER REVIEW

[01] NASA proposal
[02] JPS Conference Proceedings, 2019.
[03] AAS Journal, 2021.
[04] JAXA Ryugu AO1 proposal, 2022.
[05] JAXA Ryugu AO2 proposal, 2022.
[06] Icarus, 2023.
[07] JAXA Ryugu AO4 proposal, 2023.
[08] Nature Astronomy, 2024.



EFFORTS ON PUBLICATIONS

noted on "Acknowledgement"

[01] Kunihiro Myojo et al. The Astrophysical Journal, 2018.
[02] Tomohiro Usui et al. Space Science Reviews, 2020.
[03] Yukon Ohshiro et al. The Astrophysical Journal Letters, 2021.
[04] Shoji Mori et al. The Astrophysical Journal, 2021.
[05] Sota Arakawa and Eiichiro Kokubo Astronomy and Astrophysics, 2023.
[06] Jin Beniyama et al. The Astrophysical Journal, 2023.



inserted by FC2 system