Formation and transportation of chondrules at outer regions of protoplanetary disk

2013 Fiscal Year Final Research Report

• Project/Area Number: 21340165
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geochemistry/Astrochemistry
• Research Institution: Tohoku University (2010-2013); Kyushu University (2009)
• Principal Investigator: NAKAMURA Tomoki 東北大学, 理学(系)研究科(研究院), 教授 (20260721)
• Co-Investigator(Kenkyū-buntansha): NOGUCHI Takaaki 茨城大学, 理学部, 教授 (40222195)
• Co-Investigator(Renkei-kenkyūsha): TUCHIYAMA Akira 京都大学, 大学院理学研究科, 教授 (90180017) ; NAGAO Keisuke 東京大学, 大学院理学研究科, 教授 (40131619) ; SEKIYA Minoru 九州大学, 大学院理学研究科, 教授 (60202420) ; SANO Yuji 東京大学, 海洋研究所, 教授 (50162524)
• Project Period (FY): 2009-04-01 – 2014-03-31
• Keywords: 彗星塵 / ビルド第2彗星 / コンドリュール / スターダスト探査機

Research Abstract

We have carried out mineralogical and isotopic analyses on cometary chondrules recovered by the Stardust mission. Both type-I and type-II chondrules are present in cometary chondrules. Oxygen isotopes show a wide range of composition. Some silicates in chondrules show 16O-rich composition close to the Sun, suggesting that they formed near the Sun. 26Al was not detected from plagioclase in a type-I chondrule, indicating that this cometary chondrule formed after the decay of most of 26Al and is younger than typical asteroidal chondrules.

Research Products

• [Journal Article] A chondrule captured by space exposed aerogel on the international space station (2011)
  • Author(s): Noguchi,T., Nakamura T., Ushikubo T., Kita N. T., Valley J.W.,Yamanaka R., Kimoto Y., and Kitazawa Y
  • Journal Title: Earth and Planetary Science Letters Volume: 309 Pages: 198-206
  • DOI: 10.1016/j.epsl.2011.06.032
  • Peer Reviewed
• [Journal Article] Three-dimensional shapes and Fe contents of Stardust impact tracks : A track formation model and estimation of comet Wild 2 coma dust particle densities (2010)
  • Author(s): Iida Y., Tsuchiyama A., Kadono T., Sakamoto K., Nakamura T., Uesugi K., Nakano T., and Zolensky M. E
  • Journal Title: Meteoritics and Planetary Science Volume: 45 Pages: 1302-1319
  • DOI: 10.1111/j.1945-5100.2010.01091.X
  • Peer Reviewed
• [Journal Article] Three-dimensional structures and elemental distributions of Stardust impact tracks using synchrotron microtomography and x-ray fluorescence analysis (2009)
  • Author(s): Tsuchiyama A., Nakamura T., Okazaki T., Uesugi K., Nakano T., Sakamoto K., Akaki T., Iida Y., Jogo K., and Suzuki Y
  • Journal Title: Meteoritics and Planetary Sciences Volume: 44 Pages: 1203-1224
  • DOI: 10.1111/j.1945-5100.2009.tb01218.x
  • Peer Reviewed
• [Journal Article] スターダスト探査機により回収された短周期彗星81P/ビルト2 のコンドリュール (2009)
  • Author(s): 中村智樹,野口高明,土`山明,牛久保孝行,木多紀子,ジョン・バレー,マイケル・ゾレンスキー,嘉数勇基,坂本佳奈子,増尾悦子,上杉健太朗,中野司
  • Journal Title: 日本地球科学会誌 Volume: 43巻 Pages: 143-153
  • Peer Reviewed
• [Presentation] New perspective for early solar system evolution derived from recent sample return missions (2012)
  • Author(s): T. Nakamura
  • Organizer: Cosmochemistry of primitive bodies-The need for MarcoPolo-R - a European sample return space mission
  • Place of Presentation: Paris, France
  • Year and Date: 2012-12-03
• [Presentation] 短周期彗星ビルド2に含まれるコンドリュールの鉱物学的同位体的特長 (2010)
  • Author(s): 中村 智樹, 野口 高明, 土山 明, 牛久保孝行, 木多紀子, ジョン・バレー, 高畑 直人, 藤谷 渉, 佐野 有司, マイクゾレンスキー, 上杉健太朗, 中野 司
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 幕張メッセ国際会議場
  • Year and Date: 2010-05-28
• [Presentation] Additional evidence for the presence of chondrules in Comet 81P/Wild2 (2009)
  • Author(s): Nakamura T., Noguchi T., Tsuchiyama A., Ushikubo T, Kita N. T., Valley J. W., Takahata N., Sano Y., Zolensky M. E., Kakazu Y., Uesugi K. and Nakano T
  • Organizer: 72nd Annual Meeting of the Meteoritical Society
  • Place of Presentation: Nancy, France (Abstract #5304)
  • Year and Date: 2009-07-15