隕石中の難揮発性包有物の形成速度論に基づく太陽系最初期の物理化学環境解析

2016 Fiscal Year Annual Research Report

• Project/Area Number: 16H06349
• Research Institution: Hokkaido University
• Principal Investigator: 圦本 尚義 北海道大学, 理学研究院, 教授 (80191485)
• Co-Investigator(Kenkyū-buntansha): 橘 省吾 北海道大学, 理学研究院, 准教授 (50361564)
• Project Period (FY): 2016-05-31 – 2021-03-31
• Keywords: 地球化学 / 宇宙化学 / 隕石 / 太陽系 / 原始惑星系

Outline of Annual Research Achievements

太陽系形成の最初期に内側太陽系で高温ガスからの固体凝縮プロセスや加熱による固体溶融プロセスがあったことは，始源的隕石中の難揮発性包有物（CAI やAOA）の存在から明らかである．惑星材料物質が経験したこの高温プロセスは，原始星や原始惑星系円盤の天文観測でも観測されておらず，その物理化学環境はいまだにはっきりとしない．本研究では，難揮発性包有物の同位体岩石学・鉱物学的研究に，室内実験による難揮発性包有物の再現実験を組み合わせ，太陽系最初期の高温プロセスの物理化学環境を定量的に制約する．特に本研究により，原始惑星系円盤内縁領域の圧力条件，水蒸気分圧とガス／ダスト比が新規決定できることが期待される．本年度は以下の研究成果が得られた．
CAI形成場推定のための室内実験を実施した．低水蒸気圧・高温でのCAI模擬物質の溶融・結晶化実験をおこなうための実験装置（赤外線集光加熱真空炉）の開発，性能評価，ガス導入システムの作成をおこなった．低水素圧力下でのメリライト蒸発実験により，メリライトがCa, Al酸化物を残渣に分解蒸発することを示した．水蒸気中でのメリライト酸素自己拡散実験をおこない，メリライト中の酸素自己拡散が促進されたないことを示した．溶融CAIに関し，走査型電子顕微鏡および同位体顕微鏡システムを用いて，結晶成長時の元素ゾーニングと酸素同位体分布の関連に注目した鉱物学岩石学・酸素同位体分布の観察・分析をおこなった．

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

１．CAI形成場推定のための室内実験．低水蒸気圧・高温でのCAI模擬物質の溶融・結晶化実験をおこなうための実験装置（赤外線集光加熱真空炉）として，石英ガラス管を真空チャンバーとし，外部から赤外線集光加熱機構で加熱する装置を作成した．装置の到達圧力の性能評価をおこなった．また，水素ガスを18Oに濃集したH2Oを入れた定温漕内を経由して，チャンバー内に一定流量で導入し，バタフライバルブで調整する排気速度とのバランスで炉内に定常的に初期太陽系円盤条件に近い一定圧力 (100-0.1 Pa) 環境をつくりだすシステムの作成に成功した．低圧水素中でのメリライトの蒸発実験をおこない，メリライトからは選択的にMg, Si成分が蒸発し，Ca, Al酸化物を残渣とする分解蒸発となることを示した．また，水蒸気を酸素源としたメリライト中の酸素自己拡散係数決定の実験をおこない，水蒸気中でもメリライト中の酸素自己拡散が促進されない可能性を示した．
２．溶融CAIの鉱物学岩石学・酸素同位体分布の観察・分析：CAIには太陽の酸素同位体組成に近いO-16に富んだ環境での形成後に，惑星の酸素同位体組成に近いO-16に乏しい環境で溶融し，部分溶融メルトが周囲のガスと酸素同位体交換を起こしたものが存在する．Allende隕石（CV3）中の溶融CAI TS-34に対し，溶融残渣でO-16に富むスピネル，再溶融メルトから結晶化したメリライト，輝石，斜長石の組織，主要元素・微量元素分布，酸素同位体分布を電界放射型走査型電子顕微鏡（FE-SEM-EDS-EBSD; JEOL JSM 7000F），高感度二次元イオン検出器（SCAPS）搭載の結像型二次イオン質量分析計（同位体顕微鏡）（Cameca ims-1270, ims-1280HR）を用いて，結晶成長時の元素ゾーニングと酸素同位体分布の関連に注目した観察・分析をおこなった．
以上のように当初の研究計画に従い研究が進展している．

Strategy for Future Research Activity

低水蒸気圧・高温でのCAI模擬物質の溶融・結晶化実験をおこなうための実験装置（赤外線集光加熱真空炉）の性能評価後に低水蒸気圧下でのCAI模擬物質の溶融・結晶化実験を開始する．並行して，低圧下での実験との比較のために，1気圧でのCAI模擬物質溶融・結晶化実験をおこなう．また，現有の別の真空炉を用いて，低水素圧下でのCAI模擬物質の溶融・結晶化実験をおこない，蒸発による元素分別がある中での結晶化挙動を調べる．水蒸気圧，水素圧を変えた実験をおこない，水蒸気との酸素同位体交換，蒸発による元素分別と結晶化の関係を明らかにする．溶融CAIの鉱物学岩石学・酸素同位体分布の観察・分析と併せ，天然CAIを説明するガス圧力を見積もる．
Efremovka (CV3) 隕石中のCAI HKE 01はメリライトを主要構成鉱物とし，高温ガスから凝縮でつくられたと考えられる．メリライトは逆累帯構造を示し，結晶成長中に円盤圧力が一桁程度減少した可能性があるが，定量的な見積もりはされていない．実験で推定される凝縮挙動を基に逆累帯構造を残し，結晶成長する温度，圧力，ガス/ダスト比（金属元素存在度），それらの時間変化を制約する．形成中にガスの酸素同位体組成が変わったこともわかっており，観察事実と実験で得る酸素同位体交換反応速度を合わせ，形成場のガスの酸素同位体変化の時間スケールも制約する．

Research Products

• [Journal Article] Evolution of morphological and physical properties of laboratory interstellar organic residues with ultraviolet irradiation. (2017)
  • Author(s): Piani, L., Tachibana, S., Hama, T., Tanaka, H., Endo, Y., Sugawara, I., Dessimoulie, L., Kimura, Y., Miyake, A., Matsuno, J., Tsuchiyama, A., Fujita, K., Nakatsubo, S., Fukushi, H., Mori, S., Chigai, T., Yurimoto, H. and Kouchi, A.
  • Journal Title: Astrophys. J. Volume: 837 Pages: 35
  • DOI: 10.3847/1538-4357/aa5ca6
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Hayabusa2 sample catcher and container: Metal-seal system for vacuum encapsulation of returned samples with volatiles and organic compounds recovered from C-type asteroid Ryugu. (2017)
  • Author(s): Okazaki R., Sawada H., Yamanouchi S., Tachibana S., Miura Y. N., Sakamoto K., Takano Y., Abe M., Itoh S., Yamada K., Yabuta H., Okamoto C., Yano H., Noguchi T., Nakamura T., Nagao K. and Hayabusa2 SMP Team.
  • Journal Title: Space Sci. Rev Volume: 208 Pages: 107-124
  • DOI: 10.1007/s11214-016-0289-5
  • Peer Reviewed
• [Journal Article] Evolution of mineralogy and organic matter during the early stages of aqueous activity recorded in Antarctic micrometeorites. (2017)
  • Author(s): Noguchi T., Yabuta H., Itoh S., Sakamoto N., Mitsunari T., Okubo A., Okazaki R., Nakamura T., Tachibana S., Terada K., Ebihara M., Imae N., Kimura M. and Nagahara H.
  • Journal Title: Geochim Cosmochim Acta Volume: 208 Pages: 119-144
  • DOI: 10.1016/j.gca.2017.03.034
  • Peer Reviewed
• [Journal Article] One-pot synthesis of amino acid precursors with insoluble organic matter in planetesimals with aqueous activity. (2017)
  • Author(s): Kebukawa Y., Chan Q. H. S., Tachibana S., Kobayashi K. and Zolensky M. E.
  • Journal Title: Science Advances Volume: 3 Pages: e1602093
  • DOI: 10.1126/sciadv.1602093
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Hayabusa2 sampler: Collection of asteroidal surface material. (2017)
  • Author(s): Sawada H., Okazaki R., Tachibana S., Sakamoto K., Takano Y., Okamoto C., Yano H., Miura Y. N., Abe M., Hasegawa, S., Noguchi T. and the Hayabusa2 SMP Team
  • Journal Title: Space Sci. Rev. Volume: - Pages: 1-26
  • DOI: 10.1007/s11214-017-0338-8
  • Peer Reviewed
• [Journal Article] New constraints on upper mantle creep mechanism inferred from silicon grain-boundary diffusion rates. (2016)
  • Author(s): Fei, H., Koizumi, S., Sakamoto, N., Hashiguchi, M., Yurimoto, H., Marquardt, K., Miyajima, N., Yamazaki, D. and Katsura, T.
  • Journal Title: Earth Planet. Sci. Lett. Volume: 433 Pages: 350-359
  • DOI: 10.1016/j.epsl.2015.11.014
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] P-O-rich sulfide phase in CM chondrites: Constraints on its origin on the CM parent body. (2016)
  • Author(s): Zhang, A. -C., Itoh, S., Yurimoto, H., Hsu, W. -B., Wang, R. -C. and Taylor, L. A.
  • Journal Title: Meteorit. Planet. Sci. Volume: 51 Pages: 56-69
  • DOI: 10.1111/maps.12583
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Sound velocities of aluminum‐bearing stishovite in the mantle transition zone (2016)
  • Author(s): Greaux, S., Kono, Y., Wang, Y., Yamada, A., Zhou, C., Jing, Z., Inoue, T., Higo, Y., Irifune, T., Sakamoto, N. and Yurimoto, H.
  • Journal Title: Geophysical Research Letters Volume: 43 Pages: 4239-4246
  • DOI: 10.1002/2016GL068377
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] High-pressure minerals in eucrite suggest a small source crater on Vesta (2016)
  • Author(s): Pang, R.-L., Zhang, A.-C., Wang, S.-Z., Wang, R.-C. and Yurimoto, H.
  • Journal Title: Scientific Reports Volume: 6 Pages: 26063
  • DOI: 10.1038/srep26063
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] On progress and rate of the peritectic reaction Fo + SiO2 → En in natural andesitic arc magmas. (2016)
  • Author(s): Zellmer, G.F., Sakamoto, N., Matsuda, N., Iizuka, Y., Moebis, A. and Yurimoto, H.
  • Journal Title: Geochim. Cosmochim. Acta Volume: 185 Pages: 383-393
  • DOI: 10.1016/j.gca.2016.01.005
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Inferring the effects of compositional boundary layers on crystal nucleation, growth textures, and mineral chemistry in natural volcanic tephras through submicron-resolution imaging. (2016)
  • Author(s): Zellmer, G. F., Sakamoto, N., Hwang, S., Matsuda, N., Iizuka, Y., Moebis, A. and Yurimoto, H.
  • Journal Title: Frontiers in Earth Science Volume: 4 Pages: 88
  • DOI: 10.3389/feart.2016.00088
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Young asteroidal fluid activity revealed by absolute age from apatite in carbonaceous chondrite. (2016)
  • Author(s): Zhang, A.-C., Li, Q.-L., Yurimoto, H., Sakamoto, N., Li, X.-H., Hu, S., Lin, Y.-T. and Wang, R.-C.
  • Journal Title: Nature Communications Volume: 7 Pages: 12844
  • DOI: 10.1038/ncomms12844
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Localization of minodronate in mouse femora through isotope microscopy. (2016)
  • Author(s): Hongo, H., Sasaki, M., Kobayashi, S., Hasegawa, T., Yamamoto, T., Tsuboi, K., Tsuchiya, E., Nagai, T., Khadiza, N., Abe, M., Kudo, A., Oda, K., Henrique Luiz de Freitas, P., Li, M., Yurimoto, H. and Amizuka, N.
  • Journal Title: Journal of Histochemistry & Cytochemistry Volume: 64 Pages: 601-622
  • DOI: 10.1369/0022155416665577
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Evaluation of multi-turn time-of-flight mass spectrum of laser ionization mass nanoscope. (2016)
  • Author(s): Tonotani, A., Bajo, K.-i., Itose, S., Ishihara, M., Uchino, K. and Yurimoto, H.
  • Journal Title: Surf. Interface Anal. Volume: 48 Pages: 1122-1126
  • DOI: 10.1002/sia.6112
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] High spatial resolution imaging of helium isotope by TOF-SNMS. (2016)
  • Author(s): Bajo, K.-i., Itose, S., Matsuya, M., Ishihara, M., Uchino, K., Kudo, M., Sakaguchi, I. and Yurimoto, H.
  • Journal Title: Surf. Interface Anal. Volume: 48 Pages: 1190-1193
  • DOI: 10.1002/sia.6085
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Quantitative analysis of helium by post-ionization method using femtosecond laser technique. (2016)
  • Author(s): Yurimoto, H., Bajo, K.-i., Sakaguchi, I., Suzuki, T. T., Jurewicz, A. J. G., Itose, S., Uchino, K. and Ishihara, M.
  • Journal Title: Surf. Interface Anal. Volume: 48 Pages: 1181-1184
  • DOI: 10.1002/sia.6119
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] 初期太陽系の惑星物質科学：隕石・彗星・小惑星の微粒子 (2016)
  • Author(s): 小島知子，中村圭子，橘 省吾
  • Journal Title: エアロゾル研究 Volume: 31 Pages: 161-168
  • DOI: 10.11203/jar.31.161
  • Peer Reviewed
• [Presentation] Initial analysis of Hayabusa2 samples returned from C-type near-Earth asteroid Ryugu. (2017)
  • Author(s): Tachibana S., Watanabe S., and the Hayabusa2 Project Team
  • Organizer: 48th Lunar and Planetary Science Conference
  • Place of Presentation: ウッドランド（アメリカ）
  • Year and Date: 2017-03-20 – 2017-03-24
  • Int'l Joint Research
• [Presentation] Water vapor pressure dependence of crystallization of amorphous enstatite. (2017)
  • Author(s): Kobayashi K, Yamamoto D. and Tachibana S.
  • Organizer: 48th Lunar and Planetary Science Conference
  • Place of Presentation: ウッドランド（アメリカ）
  • Year and Date: 2017-03-20 – 2017-03-24
  • Int'l Joint Research
• [Presentation] Oxygen isotopic exchange between amorphous silicate and water vapor under low-pressure condition: Implication for survivability of presolar silicate in the early solar system. (2017)
  • Author(s): Yamamoto D. and Tachibana S.
  • Organizer: 48th Lunar and Planetary Science Conference
  • Place of Presentation: ウッドランド（アメリカ）
  • Year and Date: 2017-03-20 – 2017-03-24
  • Int'l Joint Research
• [Presentation] 「はやぶさ」サンプルの 初期分析から国際AOに基づく科学成果 (2017)
  • Author(s): 圦本尚義
  • Organizer: 宇宙科学談話会
  • Place of Presentation: JAXA（神奈川県相模原市）
  • Year and Date: 2017-03-15 – 2017-03-15
  • Invited
• [Presentation] 単純なメカニズムにより支配されている軽元素の同位体比の惑星間の大きな違い (2017)
  • Author(s): 圦本尚義
  • Organizer: ダスト形成から惑星の多様性へ ー宇宙の物質進化における物理と化学のカップリングー
  • Place of Presentation: 東京大学大学院理学系研究科（東京都文京区）
  • Year and Date: 2017-03-08 – 2017-03-09
  • Invited
• [Presentation] 産学協同に向けたJAXAの宇宙物質分析体制の強化と先端機器開発 (2017)
  • Author(s): 圦本尚義
  • Organizer: マイクロビームアナリシス第141委員会第167回研究会
  • Place of Presentation: JAXA（神奈川県相模原市）
  • Year and Date: 2017-02-01 – 2017-02-02
  • Invited
• [Presentation] Water diffusion in silicate glasses: The effect of glass structure. (2016)
  • Author(s): Kuroda M. and Tachibana S.
  • Organizer: 2016 AGU Fall Meeting
  • Place of Presentation: サンフランシスコ（アメリカ）
  • Year and Date: 2016-12-12 – 2016-12-16
  • Int'l Joint Research
• [Presentation] Evolution of planet-forming components in the first one million year of the protoplanetary disk (2016)
  • Author(s): Yurimoto, H.
  • Organizer: ELSI Workshop Before the Moon
  • Place of Presentation: 東京工業大学（東京都目黒区）
  • Year and Date: 2016-11-07 – 2016-11-10
  • Invited
• [Presentation] 隕石中のプレソーラー粒子と個人的研究展望 (2016)
  • Author(s): 圦本尚義
  • Organizer: プレソーラー粒子から探る星間ダストの進化と太陽系の起源
  • Place of Presentation: 国立天文台（東京都三鷹市）
  • Year and Date: 2016-09-26 – 2016-09-27
  • Invited
• [Presentation] はやぶさ２とキュレーション体制＆その後 (2016)
  • Author(s): 圦本尚義
  • Organizer: 2016年度 日本地球化学会年会
  • Place of Presentation: 大阪市立大学（大阪府大阪市）
  • Year and Date: 2016-09-14 – 2016-09-16
  • Invited
• [Presentation] Why do we want to invent novel analyzers beyond state-of-the-art spectrometer? (2016)
  • Author(s): Yurimoto, H.
  • Organizer: 2016年度 日本地球化学会年会
  • Place of Presentation: 大阪市立大学（大阪府大阪市）
  • Year and Date: 2016-09-14 – 2016-09-16
  • Invited
• [Presentation] 原始太陽系円盤における非晶質フォルステライトからの含水鉱物ダスト形成：内惑星領域への水供給プロセス. (2016)
  • Author(s): 山本大貴，橘 省吾
  • Organizer: 日本惑星科学会2016年秋季講演会
  • Place of Presentation: ノートルダム清心女子大学（岡山県岡山市）
  • Year and Date: 2016-09-12 – 2016-09-14
• [Presentation] A supernova with mixing fallback as a last spike of short-lived radionuclides 107Pd, 129L and 182Hf in the early solar system. (2016)
  • Author(s): Tachibana S.
  • Organizer: 79th Annual Meeting of the Meteoritical Society
  • Place of Presentation: ベルリン（ドイツ）
  • Year and Date: 2016-08-07 – 2016-08-12
  • Int'l Joint Research / Invited
• [Presentation] Formation of circumstellar dust around an oxygen-rich AGB star W Hya: AlO and SiO observations with ALMA. (2016)
  • Author(s): Takigawa A., Kamizuka T., Tachibana S. and Yamamura I.
  • Organizer: 79th Annual Meeting of the Meteoritical Society
  • Place of Presentation: ベルリン（ドイツ）
  • Year and Date: 2016-08-07 – 2016-08-12
  • Int'l Joint Research
• [Presentation] Early stages of aqueous alteration in cometary bodies. (2016)
  • Author(s): Noguchi T., Yabuta H., Itoh S., Mitsunari T., Okubo A., Okazaki R., Nakamura T., Tachibana S., Terada K., Ebihara M., Imae N., Kimura M. and Nagahara H.
  • Organizer: 79th Annual Meeting of the Meteoritical Society
  • Place of Presentation: ベルリン（ドイツ）
  • Year and Date: 2016-08-07 – 2016-08-12
  • Int'l Joint Research
• [Presentation] JAXA Astromaterials Research Group -Past, Present, and Future Plan- (2016)
  • Author(s): Yurimoto, H.
  • Organizer: International Workshop:Planetary Science and Space Exploration
  • Place of Presentation: 東北大学（宮城県仙台市）
  • Year and Date: 2016-07-04 – 2016-07-06
  • Int'l Joint Research / Invited
• [Presentation] Deuterium- and 15N-Signatures of Organic Globules in Murchison and Northwest Africa 801 Meteorites (2016)
  • Author(s): Hashiguchi M, Kobayashi S & Yurimoto H
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Evaluation for Multi-Turn Time of Flight Mass Spectrum of Laser Ionization Mass Nanoscope (2016)
  • Author(s): Tonotani A, Bajo K, Itose S, Ishihara M, Uchino K & Yurimoto H
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Hydrogen Isotopic Evolution of Water and Organic Compounds on Carbon-Rich Asteroids (2016)
  • Author(s): Piani L, Remusat L, Robert F & Yurimoto H
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Hydrous Bridgmanite: Possible Water Reservior in the Lower Mantle (2016)
  • Author(s): Inoue T, Kakizawa S, Fujino K, Kuribayashi T, Nagase T, Greaux S, Higo Y, Sakamoto N, Yurimoto H, Hattori T & Sano A
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Early Cometary Delivery of Water to the Inner Solar System: Clues from the Moon and Mars (2016)
  • Author(s): Greenwood J, Itoh S, Sakamoto N & Yurimoto H
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Melting of an Allende Type B1 CAI in 16O-Rich Nebular Gas (2016)
  • Author(s): Kawasaki N, Simon SB, Grossman L & Yurimoto H
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Origin of Extremely Deutrium-Rich Isotopic Compositions of Phosphates from LL4-6 Ordinary Chondrites (2016)
  • Author(s): Itoh S, Higashi Y, Hashiguchi M, Sakaguchi I, Yanai K, Russell S, Greenwood J, Sakata S, Hirata T & Yurimoto H
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Micro-Distribution of Solar Wind Helium Implanted to Itokawa Particle (2016)
  • Author(s): Bajo K, Sakaguchi I, Suzuki T, Itose S, Matsuya M, Ishihara M, Uchino K & Yurimoto H
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] H-D Inter-Diffusion in Olivine: Implications for Hydrogen Migration Mechanism in the Upper Mantle (2016)
  • Author(s): Sun W, Yoshino T, Sakamoto N & Yurimoto H
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Chemical evolution of the solar system: Laboratory experiments and small-body explorations. (2016)
  • Author(s): Tachibana S.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Hayabusa2: A mission to reveal the material evolution on a C-Type asteroid Ryugu. (2016)
  • Author(s): Watanabe S., Tachibana S., Sugita S., Kitazato K. and Tanaka S.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Geology on small airless bodies. (2016)
  • Author(s): Walsh K., Connolly H., Lauretta D., Tachibana S. and Bottke W.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] The dynamical evolution of asteroids constrained from sample analysis. (2016)
  • Author(s): Connolly Jr. H.C., Lauretta D.S., Walsh K.J. and Tachibana S.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Hydrous mineral formation from amorphous forsterite in the protosolar disk. (2016)
  • Author(s): Yamamoto D. and Tachibana S.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Crystallization experiments of amorphous enstatite dust in protoplanetary disks. (2016)
  • Author(s): Kobayashi K, Yamamoto D. and Tachibana S.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Cooling experiments of Fe-Fes melts: A cooling speedometer of chondrules. (2016)
  • Author(s): Mori M., Tachibana S., Piani L., Marrocchi Y., Schrader D.L. and Connolly, Jr. H.C.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Water diffusion in silicate glasses: The effect of glass viscosity. (2016)
  • Author(s): Kuroda M. and Tachibana S.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Dust formation around an oxygen-rich AGB star W Hya: SiO and CO observation with ALMA. (2016)
  • Author(s): Takigawa A., Kamizuka T., Tachibana S. and Yamamura I.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Interactive evolution of inorganic and organic materials and water in comets and icy bodies. (2016)
  • Author(s): Nagahara H., Noguchi T., Yabuta H., Itoh S., Nakamoto N., Mitsunari T., Okubo A., Okazaki R., Nakamura T., Tachibana S., Terada K., Ebihara M., Imae N. and Kimura M.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] Aqueous chemistry of formaldehyde and ammonia in the early solar system. (2016)
  • Author(s): Kebukawa Y., Misawa S., Kawai J., Mita H., Nanbu K., Ouchi T., Muramatsu Y., Yoda I., Tachibana S. and Kobayashi K.
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-26 – 2016-07-01
  • Int'l Joint Research
• [Presentation] LIMAS: Tunnel-ionization time-of-flight sputtered neutral mass spectrometer for astromaterials. (2016)
  • Author(s): Yurimoto, H.
  • Organizer: 14th International Symposium on Nuclei in the Cosmos (NIC-XIV)
  • Place of Presentation: 朱鷺メッセ（新潟県新潟市）
  • Year and Date: 2016-06-19 – 2016-06-24
  • Int'l Joint Research
• [Book] 星くずたちの記憶-銀河から太陽系への物語 (2016)
  • Author(s): 橘 省吾
  • Total Pages: 128
  • Publisher: 岩波書店
• [Book] 系外惑星の事典 "小惑星・隕石の物質科学" ”彗星の物質科学” (2016)
  • Author(s): 橘 省吾，井田 茂・田村元秀・生駒大洋・関根康人編
  • Total Pages: 356（125-128）
  • Publisher: 朝倉書店
• [Remarks] 北海道大学大学院理学研究院圦本研究室ホームページ
  • URL: http://vigarano.ep.sci.hokudai.ac.jp/