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Decoding the origin of solar system from the isotope anomalies of heavy elements in meteorites

Research Project

Project/Area Number 16H04081
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Geochemistry/Cosmochemistry
Research InstitutionTokyo Institute of Technology

Principal Investigator

Yokoyama Tetsuya  東京工業大学, 理学院, 教授 (00467028)

Co-Investigator(Kenkyū-buntansha) 平田 岳史  東京大学, 大学院理学系研究科(理学部), 教授 (10251612)
辻本 拓司  国立天文台, 光赤外研究部, 助教 (10270456)
中本 泰史  東京工業大学, 理学院, 教授 (60261757)
奥住 聡  東京工業大学, 理学院, 准教授 (60704533)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Keywords隕石 / 同位体異常 / 惑星形成 / 小惑星帯 / r-プロセス / s-プロセス / 惑星形成論 / 原子核合成
Outline of Final Research Achievements

The aim of this research is to derive a new planet formation theory by measuring isotope anomalies of heavy elements in meteorites and constraining the dynamic history of precursor materials of planetesimals. The isotopic compositions of Sr, Nd, and Mo in meteorites revealed the presence of two isotopically distinct reservoirs in the early solar system where parent bodies of meteorites were formed. In particular, the outer asteroid belt was found to be enriched in components derived from supernovae. Such isotopic variability is caused by the heterogeneous distribution of s- and r-process nuclides in the early solar system, which was triggered by the selective destruction of dust grains by nebular thermal processing in the inner solar system, followed by the transportation of recrystallized-silicate dusts into the outer solar system.

Academic Significance and Societal Importance of the Research Achievements

本研究最大の特色は、隕石の高精度同位体分析と理論研究を融合し、太陽系形成論のブレークスルーを目指した点である。特に隕石の重元素同位体組成に着目することにより、惑星の材料物質が被った物理化学過程を微粒子レベルで捉えた点が意義深い。本研究により、隕石の同位体異常は初期太陽系内側で生じた熱プロセスによるダスト粒子の選択的破壊と、その後再凝縮したケイ酸塩粒子の太陽系外側への運搬が原因であることが判明した。本研究の成果とはやぶさ2のような惑星探査の結果を結びつけることで、今後地球型惑星の起源物質がより高い精度で明らかになることが期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (67 results)

All 2019 2018 2017 2016

All Journal Article (29 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 29 results,  Open Access: 15 results,  Acknowledgement Compliant: 2 results) Presentation (38 results) (of which Int'l Joint Research: 13 results,  Invited: 10 results)

  • [Journal Article] Refinement of the Micro‐Distillation Technique for Isotopic Analysis of Geological Samples with pg‐Level Osmium Contents2019

    • Author(s)
      Nakanishi Nao、Yokoyama Tetsuya、Ishikawa Akira
    • Journal Title

      Geostandards and Geoanalytical Research

      Volume: in press Issue: 2 Pages: 231-243

    • DOI

      10.1111/ggr.12262

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fractionation of highly siderophile elements in metal grains from unequilibrated ordinary chondrites: Implications for the origin of chondritic metals2019

    • Author(s)
      Okabayashi Satoki、Yokoyama Tetsuya、Nakanishi Nao、Iwamori Hikaru
    • Journal Title

      Geochimica et Cosmochimica Acta

      Volume: 244 Pages: 197-215

    • DOI

      10.1016/j.gca.2018.10.003

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nucleosynthetic Sr-Nd isotope correlation in chondrites: Evidence for nebular thermal processing and dust transportation in the early Solar System2019

    • Author(s)
      Fukai Ryota、Yokoyama Tetsuya
    • Journal Title

      The Astrophysical Journal

      Volume: in press

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temperature Structure in the Inner Regions of Protoplanetary Disks: Inefficient Accretion Heating Controlled by Nonideal Magnetohydrodynamics2019

    • Author(s)
      Mori, S., Bai, X-N., & Okuzumi, S.
    • Journal Title

      The Astrophysical Journal

      Volume: 872 Issue: 1 Pages: 98-98

    • DOI

      10.3847/1538-4357/ab0022

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dust Pileup at the Dead-zone Inner Edge and Implications for the Disk Shadow2019

    • Author(s)
      Ueda Takahiro、Flock Mario、Okuzumi Satoshi
    • Journal Title

      The Astrophysical Journal

      Volume: 871 Issue: 1 Pages: 10-10

    • DOI

      10.3847/1538-4357/aaf3a1

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Early Chemical Evolution of Zn Driven by Magnetorotational Supernovae and the Pathway to the Solar Zn Composition2018

    • Author(s)
      Tsujimoto Takuji、Nishimura Nobuya
    • Journal Title

      The Astrophysical Journal

      Volume: 863 Issue: 2 Pages: L27-L27

    • DOI

      10.3847/2041-8213/aad86b

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Collisional Growth of Icy Dust Aggregates in the Disk Formation Stage: Difficulties for Planetesimal Formation via Direct Collisional Growth outside the Snowline2018

    • Author(s)
      Homma Kenji、Nakamoto Taishi
    • Journal Title

      The Astrophysical Journal

      Volume: 868 Issue: 2 Pages: 118-118

    • DOI

      10.3847/1538-4357/aae0fb

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impacts of Dust Feedback on a Dust Ring Induced by a Planet in a Protoplanetary Disk2018

    • Author(s)
      Kanagawa, K. D., Muto, T., Okuzumi, S., Tanigawa, T., Taki, T., & Shibaike, Y.
    • Journal Title

      The Astrophysical Journal

      Volume: 868 Issue: 1 Pages: 48-48

    • DOI

      10.3847/1538-4357/aae837

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Does Misalignment between Magnetic Field and Angular Momentum Enhance or Suppress Circumstellar Disk Formation?2018

    • Author(s)
      Tsukamoto Y.、Okuzumi S.、Iwasaki K.、Machida M. N.、Inutsuka S.
    • Journal Title

      The Astrophysical Journal

      Volume: 868 Issue: 1 Pages: 22-41

    • DOI

      10.3847/1538-4357/aae4dc

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Re-Os isotope systematics and fractionation of siderophile elements in metal phases from CBa chondrites2018

    • Author(s)
      Nakanishi Nao、Yokoyama Tetsuya、Okabayashi Satoki、Usui Tomohiro、Iwamori Hikaru
    • Journal Title

      Meteoritics & Planetary Science

      Volume: 53 Issue: 5 Pages: 1051-1065

    • DOI

      10.1111/maps.13050

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Origin and Evolution of Nucleosynthetic Sr Isotope Variability in Calcium and Aluminum-rich Refractory Inclusions2018

    • Author(s)
      Kunihiro Myojo, Tetsuya Yokoyama, Satoki Okabayashi, Shigeyuki Wakaki, Naoji Sugiura, Hikaru Iwamori
    • Journal Title

      ASTROPHYSICAL JOURNAL

      Volume: 853 Issue: 1 Pages: 48-48

    • DOI

      10.3847/1538-4357/aa9f2e

    • NAID

      130006198682

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] iQuant2 : software for rapid and quantitative imaging using laser ablation-ICP mass spectrometry” to "Mass Spectrometry2018

    • Author(s)
      Toshihiro Suzuki, Shuhei Sakata, Yoshiki Makino, Hideyuki Obayashi, Seiya Ohara, Kentaro Hattori, and Takafumi Hirata
    • Journal Title

      Journal of Mass Spectrometry Society of Japan

      Volume: 印刷中

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tellurium isotope compositions in acid leach fractions of carbonaceous chondrites2017

    • Author(s)
      Fukami, Y. and Yokoyama, T.
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 51 Issue: 1 Pages: 17-29

    • DOI

      10.2343/geochemj.2.0443

    • NAID

      130005317108

    • ISSN
      0016-7002, 1880-5973
    • Year and Date
      2017-01-31
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coupled Pb isotopic and trace element systematics of the Tissint meteorite: Geochemical signatures of the depleted shergottite source mantle2017

    • Author(s)
      Moriwaki Ryota、Usui Tomohiro、Simon Justin I.、Jones John H.、Yokoyama Tetsuya、Tobita Minato
    • Journal Title

      Earth and Planetary Science Letters

      Volume: 474 Pages: 180-189

    • DOI

      10.1016/j.epsl.2017.06.044

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Neodymium isotope heterogeneity of ordinary and carbonaceous chondrites and the origin of non-chondritic 142 Nd compositions in the Earth2017

    • Author(s)
      Fukai Ryota、Yokoyama Tetsuya
    • Journal Title

      Earth Planet. Sci. Lett.

      Volume: 474 Pages: 206-214

    • DOI

      10.1016/j.epsl.2017.06.036

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] U-Pb age determination for zircons using laser ablation-ICP-mass spectrometry equipped with six multiple-ion counting detectors2017

    • Author(s)
      Kentaro Hattori, Shuhei Sakata, Michitaka Tanaka, Yuji Orihashi, Takafumi Hirata
    • Journal Title

      J. Anal. Atom. Spectrom.

      Volume: 32 Issue: 1 Pages: 88-95

    • DOI

      10.1039/c6ja00311g

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A new approach for constraining the magnitude of initial disequilibrium in Quaternary zircons by coupled uranium and thorium decay series dating2017

    • Author(s)
      Shuhei Sakata, Shinsuke Hirakawa, Hideki Iwano, Tohru Danhara, Marcel Guillong, Takafumi Hirata
    • Journal Title

      Quaternary Geochronology

      Volume: 38 Pages: 1-12

    • DOI

      10.1016/j.quageo.2016.11.002

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In-situ 207Pb/206Pb Isotope Ratio Measurement using Dual-Daly Ion Counting ICP-Mass Spectrometer2017

    • Author(s)
      Hideyuki O-bayashi, Michitaka Tanaka, Kentaro Hattori, Shuhei Sakata, Takafumi Hirata
    • Journal Title

      J. Anal. Atom. Spectrom.

      Volume: 32 Issue: 3 Pages: 686-691

    • DOI

      10.1039/c6ja00291a

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enrichment in r-process Elements from Multiple Distinct Events in the Early Draco Dwarf Spheroidal Galaxy2017

    • Author(s)
      Tsujimoto Takuji、Matsuno Tadafumi、Aoki Wako、Ishigaki Miho N.、Shigeyama Toshikazu
    • Journal Title

      The Astrophysical Journal

      Volume: 850 Issue: 1 Pages: L12-L12

    • DOI

      10.3847/2041-8213/aa9886

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Thermal conductivity of porous aggregates2017

    • Author(s)
      Arakawa Sota、Tanaka Hidekazu、Kataoka Akimasa、Nakamoto Taishi
    • Journal Title

      Astronomy & Astrophysics

      Volume: 608 Pages: L7-L7

    • DOI

      10.1051/0004-6361/201732182

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comprehensive study of thermal desorption of grain-surface species by accretion shocks around protostars2017

    • Author(s)
      Hitoshi Miura, Tetsuo Yamamoto, Hideko Nomura, Taishi Nakamoto, Kyoko K. Tanaka, Hidekazu Tanaka, Makiko Nagasawa
    • Journal Title

      The Astrophysical J.

      Volume: 839 Issue: 1 Pages: 47-47

    • DOI

      10.3847/1538-4357/aa67df

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Apparent Disk-mass Reduction and Planetesimal Formation in Gravitationally Unstable Disks in Class 0/1 YSOs2017

    • Author(s)
      Yusuke Tsukamoto, Satoshi Okuzumi, and Akimasa Kataoka
    • Journal Title

      The Astrophysical Journal

      Volume: 838 Issue: 2 Pages: 151-151

    • DOI

      10.3847/1538-4357/aa6081

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of Dust Radial Drift on Viscous Evolution of Gaseous Disk2017

    • Author(s)
      Kanagawa Kazuhiro D.、Ueda Takahiro、Muto Takayuki、Okuzumi Satoshi
    • Journal Title

      The Astrophysical Journal

      Volume: 844 Issue: 2 Pages: 142-142

    • DOI

      10.3847/1538-4357/aa7ca1

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Analytic Expressions for the Inner-rim Structure of Passively Heated Protoplanetary Disks2017

    • Author(s)
      Ueda Takahiro、Okuzumi Satoshi、Flock Mario
    • Journal Title

      The Astrophysical Journal

      Volume: 843 Issue: 1 Pages: 49-49

    • DOI

      10.3847/1538-4357/aa74b5

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Electron Heating and Saturation of Self-regulating Magnetorotational Instability in Protoplanetary Disks2017

    • Author(s)
      Mori Shoji、Muranushi Takayuki、Okuzumi Satoshi、Inutsuka Shu-ichiro
    • Journal Title

      The Astrophysical Journal

      Volume: 849 Issue: 2 Pages: 86-86

    • DOI

      10.3847/1538-4357/aa8e42

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Satellitesimal Formation via Collisional Dust Growth in Steady Circumplanetary Disks2017

    • Author(s)
      Shibaike Yuhito、Okuzumi Satoshi、Sasaki Takanori、Ida Shigeru
    • Journal Title

      The Astrophysical Journal

      Volume: 846 Issue: 1 Pages: 81-81

    • DOI

      10.3847/1538-4357/aa8454

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Harvesting the decay energy of 26Al to drive lightning discharge in protoplanetary discs2017

    • Author(s)
      Johansen Anders、Okuzumi Satoshi
    • Journal Title

      Astronomy & Astrophysics

      Volume: 609 Pages: A31-A31

    • DOI

      10.1051/0004-6361/201630047

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of the long-term fluctuation in isotope ratios measured by TIMS with static, dynamic, and multistatic methods: A case study for Nd isotope measurements.2016

    • Author(s)
      Fukai, R., Yokoyama, T., Kagami., S
    • Journal Title

      International Journal of Mass Spectrometry

      Volume: 414 Pages: 1-7

    • DOI

      10.1016/j.ijms.2016.12.016

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemical separation of Nd from geological samples for chronological studies using 146Sm-142Nd and 147Sm-143Nd systematics.2016

    • Author(s)
      Kagami, S. and Yokoyama, T.
    • Journal Title

      Analytica Chimica Acta

      Volume: 937 Pages: 151-159

    • DOI

      10.1016/j.aca.2016.07.004

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Molybdenum isotopic evidence for nebular thermal processing and material transportation in the inner solar system.2019

    • Author(s)
      Yokoyama, T., Fukai, R., Tsujimoto, T.
    • Organizer
      Lunar and Planetary Science Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ダストからガスへの摩擦反作用が巨大惑星が作るダストリング構造に与える 影響2019

    • Author(s)
      金川和弘, 武藤恭之, 奥住聡, 谷川享行, 瀧哲朗, 芝池諭人
    • Organizer
      日本天文学会2019年春季年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Meteoritical perspective on the origin of r-process nuclides in the Solar System2018

    • Author(s)
      Yokoyama, T., Fukai, R., Tsujimoto, T.
    • Organizer
      3rd Korea-Japan Joint Workshop on Isotope-Ratio Mass Spectrometry
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Molybdenum isotopic evidence for late accretion of outer Solar System materials2018

    • Author(s)
      okoyama, T., Nagai, Y., Hirata, T.
    • Organizer
      日本地球化学会2018年年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 希土類元素創生:2018年宇宙の旅2018

    • Author(s)
      辻本拓司
    • Organizer
      日本希土類学会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] r-process study based on stellar abundances and meteorites2018

    • Author(s)
      Tsujimoto, T.
    • Organizer
      Gravitational wave physics and astronomy: Genesis, Area Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 星と隕石の化学組成に刻まれたr過程元素の起源と進化2018

    • Author(s)
      辻本拓司
    • Organizer
      重力波観測時代のrプロセスと不安定核
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] r-process nucleosynthesis and enrichment2018

    • Author(s)
      Takuji Tsujimoto
    • Organizer
      Gravitational wave physics and astronomy: Genesis, Second Annual Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Model for Generation of Isotope Anomalies in the Inner Solar System by Inhomogeneous Molecular Cloud Core2018

    • Author(s)
      Taishi Nakamoto and Akira Takeishi
    • Organizer
      in workshop "Meteorites - Understanding the origin of planetodiversity"
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 有機物マントルを持つ岩石ダストの付着:モデル構築と微惑星形成への応用2018

    • Author(s)
      本間和明, 奥住聡
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 周惑星円盤における微衛星形成に対するダストサイズ分布の影響2018

    • Author(s)
      尾崎遼平, 奥住聡, 芝池 諭人
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Temperature Structure of Weakly-Ionized Protoplanetary Disks2018

    • Author(s)
      森昇志, Xuening Bai, 奥住聡
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ダストとスノーラインの共進化: 数値計算法の開発2018

    • Author(s)
      奥住聡, Neal Turner
    • Organizer
      日本天文学会2018年秋季年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 原始惑星系円盤中の非理想磁気流体力学効果に依存する温度構造2018

    • Author(s)
      森昇志, Xuening Bai, 奥住聡
    • Organizer
      日本天文学会2018年秋季年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 有機物マントルを持つシリケイトダストの合体成長と微惑星形成2018

    • Author(s)
      本間和明, 奥住聡
    • Organizer
      日本天文学会2018年秋季年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 焼結が誘起する若い原始惑星系円盤での多重ダストリング形成2018

    • Author(s)
      奥住聡, 百瀬宗武, 城野信一, 小林浩, 田中秀和, 田崎亮, 檜口航太
    • Organizer
      日本惑星科学会2018年秋季講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 惑星形成研究の最新の動向と将来2018

    • Author(s)
      奥住聡
    • Organizer
      宇宙電波懇談会シンポジウム2018
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Trace Element Analysis and Iron Isotopic Signature of Lunar Regolith2018

    • Author(s)
      Okabayashi, S., Yokoyama, T., Terakado, K., Galimov, E.M.
    • Organizer
      Lunar and Planetary Science Conference
    • Related Report
      2017 Annual Research Report
  • [Presentation] Meteoritical Perspective on the Origin of r-Process Nuclides in the Solar System2018

    • Author(s)
      Yokoyama, T., Fukai, R., Tsujimoto, T.
    • Organizer
      Lunar and Planetary Science Conference
    • Related Report
      2017 Annual Research Report
  • [Presentation] Formation of Metal Phases in CR Chondrites: Implications from Highly Siderophile Elements2018

    • Author(s)
      Nakanishi, N., Yokoyama, T., Okabayashi, S., Iwamori, H
    • Organizer
      Lunar and Planetary Science Conference
    • Related Report
      2017 Annual Research Report
  • [Presentation] Geochemistry, Petrology, and Sm-Nd Dating of a Stannern Group Eucrite, Northwest Africa 71882018

    • Author(s)
      Kagami, S., Haba, M.K., Yokoyama, T., Usui, T., Greenwood, R.C.
    • Organizer
      Lunar and Planetary Science Conference
    • Related Report
      2017 Annual Research Report
  • [Presentation] Isotopic dichotomy in the early Solar System inferred from nucleosynthetic Sr isotope anomalies in bulk chondrites2017

    • Author(s)
      Fukai, R., Yokoyama, T., Sugimoto, K.
    • Organizer
      The Seventh Symposium on Polar Science, National Institute of Polar Research
    • Related Report
      2017 Annual Research Report
  • [Presentation] Origin of R-Process Nuclides in the Solar System: Astronomical and Meteoritical Perspectives2017

    • Author(s)
      Yokoyama, T., Fukai, R., Tsujimoto, T.
    • Organizer
      Goldschmidt Conference
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] High Precision Sr Isotope Measurements for Bulk Chondrites with Complete Sample Digestion2017

    • Author(s)
      Fukai, R., Yokoyama, T., Okui, W., Hasegawa, S.
    • Organizer
      Goldschmidt Conference
    • Related Report
      2017 Annual Research Report
  • [Presentation] Lead Isotopic Systematics of Martian Meteorite Zagami2017

    • Author(s)
      Tobita, M., Usui, T., Niihara, T., Misawa, K., Yokoyama, T.
    • Organizer
      Goldschmidt Conference
    • Related Report
      2017 Annual Research Report
  • [Presentation] r-process enrichment traced by Pu and Ba near the sun and in the Draco2017

    • Author(s)
      Tsujimoto, Takuji
    • Organizer
      Observational Signatures of r-process nucleosynthesis in neutron star mergers
    • Related Report
      2017 Annual Research Report
  • [Presentation] Distribution of 54Cr Isotope Anomalies in Asteroid Belt2017

    • Author(s)
      Nakamoto, T., Takeishi, A.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] 惑星系形成2017

    • Author(s)
      中本泰史
    • Organizer
      天体形成論 ;過去・現在・未来
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Dust growth and planetesimal formation near the snow line in protoplanetary disks2017

    • Author(s)
      Okuzumi, S.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Dust growth inside and outside the snow line2017

    • Author(s)
      Okuzumi, S.
    • Organizer
      Disk Formation Workshop 2017
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Nucleosynthetic neodymium isotope anomalies of bulk chondrites.2016

    • Author(s)
      Fukai R, Yokoyama T, Okui W.
    • Organizer
      The Seventh Symposium on Polar Science
    • Place of Presentation
      Tachikawa, Tokyo
    • Year and Date
      2016-12-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dust growth in the early stage of planet formation2016

    • Author(s)
      Okuzumi S.
    • Organizer
      New Directions in Planet Formation
    • Place of Presentation
      Lorentz Center, Leiden, The Netherlands
    • Year and Date
      2016-07-11
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Nucleosynthetic Yb isotope anomalies in meteorites.2016

    • Author(s)
      Yokoyama T, Nakahara M, Fukai R.
    • Organizer
      Goldschmidt Conference
    • Place of Presentation
      Yokohama, Kanagawa
    • Year and Date
      2016-06-29
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Origin and evolution of r-process nuclides in Local Universe.2016

    • Author(s)
      Tsujimoto T, Yokoyama T.
    • Organizer
      Goldschmidt Conference
    • Place of Presentation
      Yokohama, Kanagawa
    • Year and Date
      2016-06-29
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Inhomogeneous Molecular Cloud Core and Isotope Anomalies in Meteorites2016

    • Author(s)
      Nakamoto, T., Takeishi, A.
    • Organizer
      Goldschmidt Conference
    • Place of Presentation
      Yokohama, Kanagawa
    • Year and Date
      2016-06-29
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nucleosynthetic neodymium isotope anomalies in bulk chondrites.2016

    • Author(s)
      Fukai R, Yokoyama T.
    • Organizer
      Goldschmidt Conference
    • Place of Presentation
      Yokohama, Kanagawa
    • Year and Date
      2016-06-28
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mo isotope evidence for distinct isotope reservoirs in the early Solar System.2016

    • Author(s)
      Nagai Y, Yokoyama T.
    • Organizer
      Goldschmidt Conference
    • Place of Presentation
      Yokohama, Kanagawa
    • Year and Date
      2016-06-28
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observational constraints on r-process site & nucleosynthesis from dwarf galaxies, the Milky Way, and the solar system2016

    • Author(s)
      Tsujimoto T.
    • Organizer
      The r-process nucleosynthesis: connecting FRIB with the cosmos
    • Place of Presentation
      Lansing, Michigan, USA
    • Year and Date
      2016-06-15
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2016-04-21   Modified: 2020-03-30  

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