Books 【 display / non-display 】

Books 【 display / non-display 】

• Encyclopedia of Astrobiology

  （ Role： Contributor ,  Infrared Spectroscopy）

  Springer  （ ISBN:978-3-642-112 ）

  Amazon

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  Language：English Book type：Dictionary, encyclopedia

Papers 【 display / non-display 】

Papers 【 display / non-display 】

• Space Exposure of Amino Acids and Their Precursors during the Tanpopo Mission

  Kobayashi Kensei, Mita Hajime, Kebukawa Yoko, Nakagawa Kazumichi, Kaneko Takeo, Obayashi Yumiko, Sa … Show more authors

  ASTROBIOLOGY   21 ( 12 )   1479 - 1493   2021.12  [Reviewed]

  DOI Web of Science

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  Language：English   Publishing type：Research paper (scientific journal)   Joint Work  

• Evaluation of extant microbial activity by phosphatase activity in terrestrial extreme environments

  Kobayashi Kensei, Sato Shuji, Ito Yuki, Nakamoto Saki, Kurizuka Taihei, Takano Yoshinori, Obayashi … Show more authors

  Viva Origino   49 ( 2 )   7   2021.11  [Reviewed]

  DOI CiNii Research

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  Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The Society for the Study of the Origin and Evolution of Life Japan   Joint Work  

  <p>  We evaluated biological activities in terrestrial extreme environment samples from Antarctica soils and submarine hydrothermal systems by measuring phosphatase activities. The soil of Site 8 (near a penguin rookery) showed almost the same level of phosphatase activities as usual surface soil sampled in Yokohama National University (YNU ) campus, while the soil of the other stations showed much less activities. Massive sulfide chimneys of submarine hydrothermal vents in South Mariana Backarc also showed phosphatase activities: The exterior part of the chimnies showed higher than the interior part, suggesting the prokarotic habitat and cell density. Alkaline phosphatase (ALP) in the extracts from the soil of Antarctica Site 8 and chimney samples was characterized by the laboratory-based enzymatic assessments. Among these profiles, firstly, the Antarctica ALP showed the maximal at 37℃, the chimney ALP showed the maximal at 90℃, while ALP from the YNU soil showed the maximal at 60℃. Secondly, the gel filtration chromatography showed that the ALP activity in both Antarctica and chimney samples was found mainly in the fraction whose molecular weights were around 100000 Dalton. The ALP activity was diminished with EDTA and was recovered with addition of zinc ion. The present results showed that zinc-containing metalloenzymes are present in the Antarctica soils and the chimneys in the hydrothermal system, and that phosphatases are useful bio-signatures for extant life in extreme environments. Phosphatase activity could be used for life detection in extraterrestrial environments, as well as for evaluation of biochemical function of prebiotic samples.</p>

• Comparison of Stepwise and Single-Step Pyrolysis GC/MS for Natural Complex Macromolecular Organic Matter

  MOGI Yuto, KEBUKAWA Yoko, KOBAYASHI Kensei

  Analytical Sciences   advpub ( 0 )   2021.8  [Reviewed]

  DOI CiNii Research

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  Language：English   Publishing type：Research paper (scientific journal)   Publisher：The Japan Society for Analytical Chemistry   Joint Work  

  Other Link： https://ci.nii.ac.jp/naid/130008073998

• On the Nature of Organic Dust in Novae

  Endo Izumi, Sakon Itsuki, Onaka Takashi, Kimura Yuki, Kimura Seiji, Wada Setsuko, Helton L. Andrew, … Show more authors

  ASTROPHYSICAL JOURNAL   917 ( 2 )   103-1 - 103-10   2021.8  [Reviewed]

  DOI Web of Science

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  Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Astronomical Society   Joint Work  

  Other Link： https://doi.org/10.3847/1538-4357/ac0cf1

• A Feasible Study of <i>In-Situ</i> Measurements of Light Isotopes and Organic Molecules with High Resolution Mass Spectrometer MULTUM on the OKEANOS Mission

  ITO Motoo, OKADA Tatsuaki, KEBUKAWA Yoko, AOKI Jun, KAWAI Yosuke, MATSUMOTO Jun, CHUJO Toshihiro, N … Show more authors

  TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN   19 ( 4 )   477 - 484   2021.7  [Reviewed]

  DOI CiNii Research

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  Language：English   Publishing type：Research paper (scientific journal)   Publisher：THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES   Joint Work  

  <p>The OKEANOS mission utilizing the Solar Power Sail is one of the candidates of the strategic middle-class space exploration to the outer Solar System lead by the JAXA. The mission is planning to be launched in 2030's, and rendezvous for spectral observations and landing for in-situ measurements of light isotopes and organic molecules to a D or P type Jupitar Trojan asteroid in 2040's. The flagship instrument on board is a high-resolution mass spectrometry (HRMS) system together with suits of remote-sensing instruments. Through in-depth scientific observations, the OKEANOS mission will provide critical input to the key questions of (1) constraining planet formation/migration theories, and (2) inventory and distribution of volatiles in the Solar System. We have conducted experimental tests of a sample canister sealing by a metal seal knife-edge, sample canister-MULTUM test, gas chromatograph-MULTUM coupling test for organics, and H and N isotopic measurements in the atmospheric air. Current performances are (1) high mass resolution was 30,000 at m/z = 20, (2) sample canister system with a knife-edge metal seal kept 90 % of a released gas in 1 hour for Cu or Au gaskets with/without regolith, (3) error meets the required precision and accuracy for nitrogen isotopic measurement but for hydrogen. These experiment tests need to continue for our scientific proposes on the asteroids.</p>

  Other Link： https://ci.nii.ac.jp/naid/130008062313

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Review Papers 【 display / non-display 】

Review Papers 【 display / non-display 】

• EFFECTS OF MINERALS FOR EVOLUTION OF ORGANIC MATTER IN THE SOLAR SYSTEM

  Kebukawa Yoko

  Viva Origino   48 ( 3 )   2020

  DOI

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  Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher：The Society for the Study of the Origin and Evolution of Life Japan   Single Work  

  <p>Extraterrestrial organic matter provided by meteorites and interplanetary dust particles could have been contributed to the origin of life on the Earth. As a part of chemical evolution toward life, it is important to understand origin and evolution of organic matter in the Solar System and beyond. Formation and evolution of organic matter in the Solar System have been studied over decades. Although organic matter usually exists with minerals as in meteorites, effects of minerals for the processes of extraterrestrial organic matter are not well understood. Here I review the relationships between organic matter and minerals observed in meteorites, experimental studies of interactions of organic matter with minerals, and mechanisms of effects of minerals for organic reactions.</p><p>Extraterrestrial organic matter provided by meteorites and interplanetary dust particles could have been contributed to the origin of life on the Earth. As a part of chemical evolution toward life, it is important to understand origin and evolution of organic matter in the Solar System and beyond. Formation and evolution of organic matter in the Solar System have been studied over decades. Although organic matter usually exists with minerals as in meteorites, effects of minerals for the processes of extraterrestrial organic matter are not well understood. Here I review the relationships between organic matter and minerals observed in meteorites, experimental studies of interactions of organic matter with minerals, and mechanisms of effects of minerals for organic reactions.</p>

  Other Link： https://ci.nii.ac.jp/naid/130008113734

• THERMAL HISTORY OF CARBONACEOUS CHONDRITE PECORA ESCARPMENT 02012.

  Nakato A., Brearley A. J., Nakamura T., Noguchi T., Kebukawa Y., Lee J. I., Matsuoka M., Sasaki S., … Show more authors

  METEORITICS & PLANETARY SCIENCE   54   2019.8

  Web of Science

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  Language：English   Publishing type：Research paper, summary (international conference)   Joint Work  

• SPACE EXPOSURE EXPERIMENTS OF CARBONACEOUS CHONDRITES, CHONDRITIC ORGANIC MATTER AND ITS ANALOGUES IN TANPOPO2, ASTROBIOLOGY SPACE MISSION ON ISS.

  Kebukawa Y., Koga M., Sakon I., Endo I., Kobayashi K., Matsuoka M., Ito M., Zolensky M. E., Alexand … Show more authors

  METEORITICS & PLANETARY SCIENCE   54   2019.8

  Web of Science

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  Language：English   Publishing type：Research paper, summary (international conference)   Joint Work  

• ORGANIC COMPOUNDS IN EARLY SOLAR SYSTEM AQUEOUS FLUIDS.

  Bodnar R. J., Dolocan A., Zolensky M. E., Lamadrid H., Kebukawa Y., Chan Q. H-S., Rahman Z.

  METEORITICS & PLANETARY SCIENCE   54   2019.8

  Web of Science

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  Language：English   Publishing type：Research paper, summary (international conference)   Joint Work  

• KINETIC ESTIMATION OF THE THERMAL HISTORY OF ORGANIC MATTER IN CHONDRITES USING RAMAN SPECTROSCOPY.

  Kiryu K., Kebukawa Y., Igisu M., Shibuya T., Kobayashi K.

  METEORITICS & PLANETARY SCIENCE   54   2019.8

  Web of Science

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  Language：English   Publishing type：Research paper, summary (international conference)   Joint Work  

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Awards 【 display / non-display 】

Awards 【 display / non-display 】

• 令和3年度科学技術分野の文部科学大臣表彰 若手科学者賞

  2021.4   文部科学省   太陽系小天体における有機物の形成と進化の研究

  Individual or group name of awards：癸生川陽子

• The Japanese Society for Planetary Sciences Outstanding Young Scientist Award

  2016.9   The Japanese Society for Planetary Sciences  

  Individual or group name of awards：Yoko Kebukawa

• The Geochemical Society of Japan Award for Young Researchers

  2015.9   The Geochemical Society of Japan  

  Individual or group name of awards：Yoko Kebukawa

Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• 隕石から探る木星型惑星大移動説

  2019.4 - 2021.3

  科学研究費補助金 

  Investigator(s)：癸生川陽子

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  Grant type：Competitive

• 微惑星における有機物進化に対する鉱物の役割の解明

  2018.4 - 2021.3

  科学研究費補助金  Grant-in-Aid for Scientific Research(C)

  Investigator(s)：癸生川陽子

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  Grant type：Competitive

• 脂肪族炭素と芳香族炭素から推定する小惑星の熱履歴

  2015.4 - 2017.3

  科学研究費補助金  Grant-in-Aid for Young Scientists(B)

  Investigator(s)：癸生川陽子

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  Grant type：Competitive

• 微小領域分析から迫る隕石有機物の進化過程の統一的解明

  2013.4 - 2014.3

  科学研究費補助金  Grant-in-Aid for JSPS Fellows

  Investigator(s)：望月(癸生川)陽子

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  Grant type：Competitive

  日本学術振興会 特別研究員PDとして

• 惑星物質中の有機物・鉱物相互関係のミクロ・ナノ非破壊分析

  2007.4 - 2009.3

  科学研究費補助金  Grant-in-Aid for JSPS Fellows

  Investigator(s)：望月(癸生川)陽子

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  Grant type：Competitive

  日本学術振興会 特別研究員DC2として

Other external funds procured 【 display / non-display 】

Other external funds procured 【 display / non-display 】

• Development of a high resolution molecular analyzer based on GC coupled to HRMS for future space explorations

  2020.4 - 2022.3

• 宇宙における有機物の形成・進化および生命の移動・居住可能性に関するアストロバイオロジー宇宙実験研究拠点

  2019.4 - 2022.3

  自然科学研究機構アストロバイオロジーセンターサテライト

  Investigator(s)：癸生川陽子

• Formation of amino acids with the presence of liquid water in the Solar System small bodies: Applications for various environments

  2018.4 - 2019.3

  Investigator(s)：Yoko Kebukawa

• Ceres の化学： 液体の水を伴う化学反応による有機物の形成

  2017.4 - 2018.3

  自然科学研究機構アストロバイオロジーセンタープロジェクト

  Investigator(s)：癸生川陽子

• 最先端イメージング分析で探る隕石有機物の起源と進化

  2016.4 - 2017.3

  自然科学研究機構アストロバイオロジーセンタープロジェクト

  Investigator(s)：癸生川陽子

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Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• Alteration of olivine induced by organic matter in meteorite parent bodies

  Hirakawa Naoki, Kebukawa Yoko, Furukawa Yoshihiro, Kobayashi Kensei

  Abstracts of Annual Meeting of the Geochemical Society of Japan  GEOCHEMICAL SOCIETY OF JAPAN

  DOI

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  Event date： 2020

  Language：Japanese   Presentation type：Oral presentation (general)  

  <p></p>

• Roles of Solar Energetic Particles in Generation of Life in the Early Earth

  Kobayashi Kensei, Oguri Yoshiyuki, Airapetian Vladimir, Kinoshita Miei, Mouri Shunsuke, Sakamoto Toshiki, Kebukawa Yoko, Takahashi Jun―ichi, Shibata Hiromi, Kubo Kenya, Fukuda Hitoshi

  Abstracts of Annual Meeting of the Geochemical Society of Japan  GEOCHEMICAL SOCIETY OF JAPAN

  DOI

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  Event date： 2020

  Language：Japanese   Presentation type：Oral presentation (general)  

  <p>Roles of solar energetic particles in habitability of the early Earth and in formation of amino acids and their enantiomeric excesses were examined by simulation experiments. SEPs are mainly composed of high energy protons, and it was suggested that high-flux SEPs were generated from the young Sun and entered into Earth atmosphere. It was shown that such SEPs were major energy to form amino acid precursors, in the case that primitive Earth atmosphere was slightly reducing. SEPs were produced N₂O, which is greenhouse effect gas and could be keep the early Earth habitable. SEPs could generate spin-polarized muons, which may have formed enantiomeric excesses of amino acids.</p>

• Evaluation of analytical method of complex organic matter by pyrolysis gas chromatography mass spectrometry for future application to extraterrestrial materials

  Mogi Yuto, Kebukawa Yoko, Kobayashi Kensei

  Abstracts of Annual Meeting of the Geochemical Society of Japan  GEOCHEMICAL SOCIETY OF JAPAN

  DOI

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  Event date： 2020

  Language：Japanese   Presentation type：Oral presentation (general)  

  <p>Pyrolysis gas chromatography-mass spectrometry (GC / MS) can reveal more detailed characteristics of the structure of organic matter by changing the pyrolysis temperature. In order to investigate the structure and thermal characteristics of complex organic matter, a method "Continuous" that performs GC / MS analysis at a series of pyrolysis temperatures by repeatedly using the same sample, and a method that prepares a new sample for each pyrolysis temperature "Replaced" step heating methods were examined and evaluated. In addition, Fourier transform infrared spectroscopy (FT-IR) analysis was also performed using a heating stage to observe changes in the sample during analysis.The reproducibility of each of the two methods was confirmed. With the "Replaced" method, it was possible to discriminate fine peaks, and with "Continuous", the difference in the detected compounds was remarkable for each pyrolysis temperature. The results of the experiments using FT-IR were in line with the tendency of the compound species detected at each pyrolysis temperature in the GC / MS experiments. Therefore, it was found that performing pyrolysis GC / MS analysis by changing the pyrolysis temperature using both methods is useful for the analysis of the components and thermal properties of complex organic molecules.</p>

• Origin of Jupiter Trojan asteroids: To be explored by OKEANOS

  Yoko Kebukawa, Tatsuaki Okada, Motoo Ito, Jun Aoki, Yosuke Kawai, Jun Matsumoto, Noel Grand, Arnaud Buch, Michisato Toyoda, Hervé Cottin, Hisayoshi Yurimoto, Hajime Yano, Takahiro Iwata, Osamu Mori  [Invited]

  Japan Geoscience Union Meeting 2019  Japan Geoscience Union Meeting

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  Event date： 2019.5

  Language：English   Presentation type：Oral presentation (general)  

  Venue：Makuhari Messe, Chiba, Japan  

• Origin of Jupiter Trojan asteroids: What to explore by OKEANOS

  Y. Kebukawa  [Invited]

  Symposium on Planetary Science 2019 

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  Event date： 2019.2

  Language：English   Presentation type：Oral presentation (general)  

  Venue：Tohoku University, Sendai  

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Charge of on-campus class subject 【 display / non-display 】

Charge of on-campus class subject 【 display / non-display 】

• 2022   Chemistry, Chemical Engineering and Life Science: Exercise B

  College of Engineering Science

• 2022   Cosmogeochemistry

  College of Engineering Science

• 2022   Astrobiology Special Lecture

  Graduate school of Engineering Science

• 2022   Advanced Study on Career Design (PSD)

  Graduate school of Engineering Science

• 2022   Exercise 1 in Chemistry Program

  College of Engineering Science

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Committee Memberships 【 display / non-display 】

Committee Memberships 【 display / non-display 】

• 日本分析化学会誌「ぶんせき」

  2018.4 - 2019.3  編集幹事

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  Committee type：Other 

Media Coverage 【 display / non-display 】

Media Coverage 【 display / non-display 】

• コズミックフロント☆NEXT『生命の起源　赤い雨のミステリー』

  NHK  コズミックフロント☆NEXT『生命の起源　赤い雨のミステリー』  2018.6

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  平成２９年６月２２日放送