Experimental study on the relationship between evolution of stars and silicate dust

• Project/Area Number: 16104007
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Geochemistry/Astrochemistry
• Research Institution: The University of Tokyo
• Principal Investigator: NAGAHARA Hiroko The University of Tokyo, 大学院・理学系研究科, 教授 (80172550)
• Co-Investigator(Kenkyū-buntansha): OZAWA Kazuhito 東京大学, 大学院・理学系研究科, 教授 (90160853) ; TACHIBANA Shogo 東京大学, 大学院・理学系研究科, 助教 (50361564)
• Project Period (FY): 2004 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥105,690,000 (Direct Cost: ¥81,300,000、Indirect Cost: ¥24,390,000); Fiscal Year 2008: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2007: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2006: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000); Fiscal Year 2005: ¥23,920,000 (Direct Cost: ¥18,400,000、Indirect Cost: ¥5,520,000); Fiscal Year 2004: ¥59,410,000 (Direct Cost: ¥45,700,000、Indirect Cost: ¥13,710,000)
• Keywords: 星 / ダスト / ガス / 凝縮 / ケイ酸塩 / 星の進化 / カイネティクス / 実験 / 星周環境 / フォルステライト / 鉄 / ケイ酸塩鉱物 / 結晶成長 / 珪酸塩鉱物 / FE-SEM / 真空実験 / クヌッセンセル

Research Abstract

原始惑星系円盤、晩期星周囲のガス中におけるダスト形成を理論的に考察し、天文観測と対比可能とするため、凝縮装置を開発し、ダスト凝縮にともなう種々のカイネティックパラメータを世界で初めて実験により決定した。その結果を用い、星周におけるダストの化学進化、ダストとガスの分離による化学分別をモデルにより考察した。

Research Products

• [Journal Article] Laboratory condensation and reaction of silicate dust. In "Cosmic Dust - Near and Far" (2009)
  • Author(s): Nagahara, H., Ozawa, K., Ogawa, R.,Tachibana, S. and Chiba, H
  • Journal Title: Th. Henning, E. Grun, J. Steinacker (eds.). ASP Conf. Ser (印刷中)
• [Journal Article] Laboratory condcnsation and reaction of silicate dust.In"Cosmic Dust-Near and Far (2009)
  • Author(s): Nagahara H. Et al.
  • Journal Title: Th. Henning, E. Grun, J. Stelnacker(eds.). ASP Conf. Ser (印刷中掲載確定)
  • Peer Reviewed
• [Journal Article] Condensation of major element during chondrule formation (2008)
  • Author(s): Nagahara, H., Kita, N., Ozawa, K. and Morishita
  • Journal Title: Geochim. Cosmochim. Acta 72 Pages: 1442-1465
• [Journal Article] 26Al-26Mgsystematics of chondrules in a primitive (2008)
  • Author(s): Kurahashi, E., Kita, N. T., Nagahara, H. and Morishita, Y.
  • Journal Title: COchondrite.Geochim. Cosmochim. Acta 72 Pages: 3865-3882
• [Journal Article] Injection of short-lived radionuclides from a faint supernova with mixing-fallback (2008)
  • Author(s): Takigawa A., Miki J., Tachibana S., Huss G. R., Tominaga N., Umeda H. and Nomoto K.
  • Journal Title: into the early solar system. Astrophys. J 688 Pages: 1382-1387
• [Journal Article] Coadensation of major element during chondrule formation (2008)
  • Author(s): Nagahara H.et al.
  • Journal Title: Geochim. Cosmochim. Acta 72 Pages: 1442-1465
  • Peer Reviewed
• [Journal Article] Injection of short-lived radionuclides from a faint supernova with mixing-fallback into the early solar system. (2008)
  • Author(s): Takigawa A. et al.
  • Journal Title: Astrophysical Journal 688 Pages: 1382-1387
  • Peer Reviewed
• [Journal Article] Condensation of major element during chondrule formation (2008)
  • Author(s): Nagahara, H., Kita, N., Ozawa, K. and Morishita, Y.
  • Journal Title: Geochim. Cosmochim. Acta 72 Pages: 1442-1465
  • Peer Reviewed
• [Journal Article] Formation and deformation mechanisms of pyroxene-spinel symplectite in an ascending mantle, the Horoman peridotite complex, Japan:A EBSD (electron backsckatter diffaction)study (2008)
  • Author(s): Odashima, N., Morishita, T., Ozawa, K, Nagahara, H., Tsuchiyama, A, and Naahshima. R.
  • Journal Title: J. Mineral. Petrol. Sci 103 Pages: 1-15
  • Peer Reviewed
• [Journal Article] 原始惑星系円盤におけるフォルステライト蒸発の赤外スペクトルへの影響 (2007)
  • Author(s): 瀧川 晶・横山聖典・橘 省吾・永原裕子・小澤一仁
  • Journal Title: 日本惑星科学会誌遊星人 16 Pages: 128-134
  • NAID: 110006317840
• [Journal Article] 物質科学的研究・観測的研究で探る惑星系の誕生と進化 (2007)
  • Author(s): 橘 省吾
  • Journal Title: 遊星人 16 Pages: 94-98
  • NAID: 110006317835
• [Journal Article] 短寿命放射性核種存在度と超新星元素合成モデルから推定する太陽系形成環境 (2007)
  • Author(s): 三木順哉・瀧川 晶・橘 省吾・Huss G. R.
  • Journal Title: 日本惑星科学会誌遊星人 16 Pages: 135-145
  • NAID: 110006317841
• [Journal Article] Anisotropy of Mg isotopic fractionation during evaporation and (2006)
  • Author(s): Yamada, M., Tachibana, S., Nagahara, H. and Ozawa, K
  • Journal Title: Mg self-diffusion of forsterite in vacuum. Planet. Space Sci 54 Pages: 1096-1106
• [Journal Article] Petrology of ferromagnesian silicate chondrules (2006)
  • Author(s): Lauretta, D. S., Nagahara, H. and Alexander, C. M. O'D
  • Journal Title: In Meteorites and the Early Solar System II. Univ. Arizona Press Pages: 431-459
• [Journal Article] Low temperature singlen crystal reflection spectra of forsterite (2006)
  • Author(s): Suto H., Sogawa H., Tachibana S., KoikeC., Karoji H., Tsuchiyama A., Chihara H.,Mizutani K., Akedo J., Ogiso K., Fukui T.,Ohara S
  • Journal Title: Monthly Notices of the Royal Astronomical Society Main Journal 370 Pages: 1599-1606
• [Journal Article] 60Fe in chondrites : Debris from a nearby supernova in the early solar system? (2006)
  • Author(s): Tachibana S., Huss G. R., Kita N. T., Shimoda G. and Morishita Y
  • Journal Title: Astrophys. J. Letters 639
• [Journal Article] Infrared reflection spectra of forsterite crystal (2006)
  • Author(s): Sogawa H., Koike C., Chihara H., Suto H., Tachibana S., Tsuchiyama A. and Kozasa T
  • Journal Title: Astron. Astrophys 451 Pages: 357-361
• [Journal Article] Chondrule formation and the evolution of the early solar system. J. (2006)
  • Author(s): Tachibana S
  • Journal Title: Mineral. Petrol. Sci 101 Pages: 37-47
• [Journal Article] Anisotropy of Mg isotopic fractionation during evaporation and Mg self-diffusion of forsterite in vacuum (2006)
  • Author(s): Yamada, M., Tachibana, S., Nagahara, H., Ozawa, K
  • Journal Title: Planetary and Space Science 54 Pages: 1096-1106
• [Journal Article] Kinetic condensation of silicatemelt and its role in the chemical diversity ofchondrules. In Chondrites and the (2005)
  • Author(s): Nagahara, H., Ozawa, K. and Tomomura, S.
  • Journal Title: Protoplanetary Disk. ASP Conf. Ser 341 Pages: 456-468
• [Journal Article] Evaporation and condensation during (2005)
  • Author(s): Davis, A., Alexander, C. M. O'D., Nagahara, H., and Richter, F.
  • Journal Title: CAIand chondrule formation. In Chondrites and the Protoplanetary Disk. ASP Conf. Ser 341 Pages: 432-455
• [Journal Article] Constraints on the origin ofchondrules and CAIs from short-lived andlong-lived radionuclides. In Chondrites andthe Protoplanetary Disk (eds. A. N. Krot, E.R. D. Scott and B. Reipurth) (2005)
  • Author(s): Kita N. T., Huss G. R., Tachibana S., Amelin Y., Nyquist L. E. and Hutcheon I. D.
  • Journal Title: San Francisco : Astronomical Society of the Pacific Pages: 55-587
• [Journal Article] Chondrule-forming shock waves in thesolar nebula by X-ray flares. In Chondritesand the Protoplanetary Disk (eds. A. N.Krot, E. R. D. Scott and B. Reipurth) (2005)
  • Author(s): Nakamoto T., Hayashi M. R., Kita N. T. and Tachibana S.
  • Journal Title: SanFrancisco : Astronomical Society of the Pacific Pages: 883-892
• [Journal Article] Oxygen, Si, and Mn-Cr isotopes of fayalite in the oxidized Kaba CV3 chondrite (2005)
  • Author(s): Hua X., Huss G. R., Tachibana S. and Sharp T. G.
  • Journal Title: Constraints for itsformation history. Geochim. Cosmochim.Acta 69 Pages: 1333-1348
• [Journal Article] Kinetic condensation of silicate melt and its role in the chemical diversity of chondrules (2005)
  • Author(s): Nagahara, H., Ozawa, K., Tomomura, S.
  • Journal Title: Astron.Soc.Pacific. 341 Pages: 456-468
• [Journal Article] Evaporation and condensation during CAI and chondrule formation (2005)
  • Author(s): Davis, A., Alexander, C., Nagahara, H., Richter, F.
  • Journal Title: Astron.Soc.Pacific. 341 Pages: 432-455
• [Journal Article] Sulfur isotope composition of putative primary troilite in chondrules from Bishumpur and Semarkona (2005)
  • Author(s): Tachibana, S., Huss, G.
  • Journal Title: Geochim.Cosomochim.Acta 69 Pages: 3074-3097
• [Journal Article] Chondrule-forming shock waves in the solar nebula by X-ray flares (2005)
  • Author(s): Nakamoto, T.Hayashi, M., Kita, Tachibana, S
  • Journal Title: Astron.Soc.Pacific. 341 Pages: 883-892
• [Journal Article] Chondrule age distribution and rate of heating events for chondrul e formation (2005)
  • Author(s): Nakamoto, T., Kita, N., Tachibana, S
  • Journal Title: Antaract.Met.Res. 18 Pages: 253-272
• [Journal Article] Oxygen, Si, and Mn-Cr isotopes of fayalite in the oxidized Kaba CV3 chondrites. (2005)
  • Author(s): Hua, X., Huss, G., Tachibana, Sharp., T.
  • Journal Title: Geochim.Cosmochim.Acta 69 Pages: 1333-1348
• [Journal Article] Chondrule age distribution and rate of heating events for chondrule formation (2005)
  • Author(s): Nakamoto T., Kita N.T., Tachibana S
  • Journal Title: Antarc.Met.Res. (In press)
  • NAID: 110001218510
• [Journal Article] Oxygen, Si, and Mn-Cr isotopes of fayalite in the oxidized Kaba CV3 chondrite : Constraints for its formation history (2005)
  • Author(s): Hua X., Huss G.R., Tachibana S., Sharp T.G.
  • Journal Title: Geochim.Cosmochim.Acta (In press)
• [Journal Article] Sulfur isotope composition of putative primary troilite in chondrules from Bishunpur and Semarkona (2005)
  • Author(s): Tachibana S., Huss G.R.
  • Journal Title: Geochim.Cosmochim.Acta (In press)
• [Journal Article] The formation of ferromagnesian chondrules (2005)
  • Author(s): Lauretta D, Nagahara, H., Alexander, CMO
  • Journal Title: In Meteorite and the Early Solar System (In press)
• [Journal Article] Thermal history of the Horoman Peridotite complex (2004)
  • Author(s): Ozawa K
  • Journal Title: Journal of Petrology 45 Pages: 253-273
• [Presentation] Condensatioh kinetics of forsterite and metal and chemical fraction in the proto Solar Nebula (2009)
  • Author(s): Nagahara H, et al
  • Organizer: 40th Lunar and Planetary Science Conference
  • Place of Presentation: The Woodlands Waterway Marriott, Houston
  • Year and Date: 2009-03-23
• [Presentation] Condensation experiments of Mg-rich crystalline and amorphous silicates in vacuun. (2009)
  • Author(s): Tachibana S, et al,
  • Organizer: 40th Lunar and Planetary Science Conference
  • Place of Presentation: The Woodlands Waterway Marriott, Houston
  • Year and Date: 2009-03-22
• [Presentation] Condensation anisotropy of corundum around AGB stars and its effecton infrared spectra (2009)
  • Author(s): Takigawa A, et al.
  • Organizer: 40th Lunar and Planetary Science Conference
  • Place of Presentation: The Woodland Waterway Marriott, Houston
  • Year and Date: 2009-03-22
• [Presentation] Condensation experiments of Mg-rich (2009)
  • Author(s): Tachibana, S., Nagahara, H., Ozawa, K., Tamada, S. and Ogawa, R.
  • Organizer: crystalline and amorphous silicates in vacuum
  • Place of Presentation: Houston, Texas
• [Presentation] Condensation anisotropy of corundum around (2009)
  • Author(s): Takigawa, A., Tachibana, S., Nagahara, H. and Ozawa, K.
  • Organizer: AGB stars and its effect on infrared spectra
  • Place of Presentation: Houston, Texas
• [Presentation] 原始惑星系円盤における金属鉄の非平衡凝縮カイネティクス (2008)
  • Author(s): 野村龍一, 他
  • Organizer: 日本惑星科学会2008年秋季講演会
  • Place of Presentation: 九州大学
  • Year and Date: 2008-11-01
• [Presentation] 星周フォルステライトダストの形状変化に関する実験的研究 (2008)
  • Author(s): 瀧川晶, 他
  • Organizer: 日本惑星科学会2008年秋季講演会
  • Place of Presentation: 九州大学
  • Year and Date: 2008-11-01
• [Presentation] Shape effects of crystalline silicate on IR spectra and anisotropio obaporation of forsterite as a possible process for shape change. (2008)
  • Author(s): Takigawa A, et al.
  • Organizer: Cosmic Dust Near & Far
  • Place of Presentation: Convention Center, Heidelberg
  • Year and Date: 2008-09-08
• [Presentation] Non-equilibrium condensation in the Mg-Si-O system:An experimental study. (2008)
  • Author(s): TachibanaS, et al,
  • Organizer: 71st Annual Meeting of Meteoritical Society
  • Place of Presentation: Kunibike Messe, Shimane
  • Year and Date: 2008-07-27
• [Presentation] Experimental constraints on silicate dust formation in protoplanetary disks:a reviev. (2008)
  • Author(s): Tachibana S, et al,
  • Organizer: Workshop on Sillicste Dust in Protostars:Astrophysical, Experimenntal and Meteoritio Link
  • Place of Presentation: University of Tokyo, Tokyo
  • Year and Date: 2008-07-25
• [Presentation] The role of heterogeneous condensation on formation in protoplanetary disc (2008)
  • Author(s): Nagahara H, et al
  • Organizer: 5th Annual General Meeting of Asia Oceania Geoscience Society
  • Place of Presentation: Busan Exhibition & Convention Center, Busan
  • Year and Date: 2008-06-16
• [Presentation] Condensation experiments in the system of Mg-Si-O and its application to dust-formation in mass-loss winds from evolved stars. (2008)
  • Author(s): Tachibana S, et al,
  • Organizer: 5th Annual General Meeting of Asia Oceania Geoscience Society
  • Place of Presentation: Busan Exhibition & Convention Center, Busan
  • Year and Date: 2008-06-16
• [Presentation] Solid-gas reaction experiments between forsterite and Si-rich gas (2008)
  • Author(s): Chiba H, et al.
  • Organizer: 5th Annual General Meeting of Asia Oceania Geoscience Society
  • Place of Presentation: Busan Exhibition & Convention Center, Busan
  • Year and Date: 2008-06-16
• [Presentation] The role of temperatures of gas and condensed phase in condensation kinetics of metallic Iron. (2008)
  • Author(s): Nomura R, et al.
  • Organizer: 5th Annual General Meeting of Asia Oceania Geoscience Society
  • Place of Presentation: Busan Exhibition & Convention Center, Busan
  • Year and Date: 2008-06-16
• [Presentation] 赤外線真空炉を用いたMg-Si-O系での凝縮実験 (2008)
  • Author(s): 橘省吾, 他
  • Organizer: 地球惑星科学関連学会2008年合同大会
  • Place of Presentation: 幕張メッセ国際会議場
  • Year and Date: 2008-05-25
• [Presentation] Effects of anisotropic evaporation of circumstellar forsterite on infrared spectra (2008)
  • Author(s): 瀧川晶, 他
  • Organizer: 地球惑星科学関連学会2008年合同大会
  • Place of Presentation: 幕張メッセ国際会議場
  • Year and Date: 2008-05-25
• [Presentation] Solid-gas reaction between forsterite and Si-rich gas:An experimental sutdy (2008)
  • Author(s): 千葉久義, 他
  • Organizer: 地球惑星科学関連学会2008年合同大会
  • Place of Presentation: 幕張メッセ国際会議場
  • Year and Date: 2008-05-25
• [Presentation] シリケイトと金属ダストの凝縮挙動 (2008)
  • Author(s): 永原 裕子・小澤 一仁
  • Organizer: 日本天文学会2008年春季年会
  • Place of Presentation: 東京
  • Year and Date: 2008-03-26
• [Presentation] Evolution of fbrsterite and metallic iron dust in circumstellar discs (2008)
  • Author(s): Nagahara, H.
  • Organizer: 日本天文学会2008年春季年会
  • Place of Presentation: 東京
  • Year and Date: 2008-03-26
• [Presentation] Evolution of forsterite and metallic iron dust in circumstellar discs (2008)
  • Author(s): Nagahara, H.
  • Organizer: 日本天文学会2008年春季年会
  • Place of Presentation: 東京
  • Year and Date: 2008-03-26
• [Presentation] Heterogeneous nucleation and growth of metal on silicates and its astrophysicalimplicatior (2008)
  • Author(s): Nagahara, H. & Ozawa, K.
  • Organizer: 39th Lunar Planet.Sci.Conf
  • Place of Presentation: Housotn,Texas
  • Year and Date: 2008-03-13
• [Presentation] Experimental study of condensation in the systenn Mg-Si-O by a bewwly developedared vaccum furnace (2008)
  • Author(s): Tachibana, S., TaTnada, S., Nagahara, H. and Ozawa, K.
  • Organizer: 39th Lunar Planet. Sci. Conf.
  • Place of Presentation: Housotn,Texas
  • Year and Date: 2008-03-13
• [Presentation] Effects of anisotropic evaporation of circumstellar forsterite on infrared spectra (2008)
  • Author(s): Takigawa, A., Tachibana, S.
  • Organizer: 39th Lunar Planet.Sci.Conf.
  • Place of Presentation: Housotn,Texas
  • Year and Date: 2008-03-13
• [Presentation] EXperimental study of reaction betwween forsterite and Si-richgas (2008)
  • Author(s): Chiba, H., Tachibana, S.
  • Organizer: 39th Lunar Planet.Sci.Conf.
  • Place of Presentation: Housotn,Texas
  • Year and Date: 2008-03-13
• [Presentation] Condensation of meatllic iron:the role of temperature s of gas and condensed phase (2008)
  • Author(s): Nomura, R., Nagahara, H.
  • Organizer: 39th Lunar Planet.Sci.Conf
  • Place of Presentation: Housotn,Texas
  • Year and Date: 2008-03-13
• [Presentation] Meteoritic and ID Pevidence of silicate dusts in the early solarnebula : a review. Workshop on Silicate Dustin Protostars (2008)
  • Author(s): Nagahara, H.
  • Organizer: Astrophysical, Experimentaland Meteoritic Link
  • Place of Presentation: Tokyo
• [Presentation] Experimental constraints on silicate dust formation in protoplanetary disks : a review (2008)
  • Author(s): Tachibana S.
  • Organizer: Workshopon Silicate Dust in Protostars : Astrophysical,Experimental and Meteoritic Link
  • Place of Presentation: Tokyo
• [Presentation] Laboratory condensation and reaction of silicate dusts (2008)
  • Author(s): Nagahara, H.
  • Organizer: Workshop "Cosmic Dust : Near and Far"
  • Place of Presentation: Heidelberg, Germany
• [Presentation] Laboratory study of crystalline and amorphous silicate. Workshop (2008)
  • Author(s): Nagahara, H., Tachibana, S., Ogawa, R.,Tamada, S. and Chiba, H.
  • Organizer: AGB stars
  • Place of Presentation: Tokyo
• [Presentation] Injection ofshort-lived and stable nuclides from a (2008)
  • Author(s): Tachibana S.
  • Organizer: "faint" supernova into the early solar system. Goldschmidt Conference 2008
  • Place of Presentation: University of British Columbia, Vancouver
• [Presentation] Heterogeneous nucleation and growth of metal on silicates and its astrophysical implication (2008)
  • Author(s): Nagahara, H.& Ozawa, K.
  • Organizer: 39^<th> Lunar Planet. Sci. Conf
  • Place of Presentation: Houston, Texas
• [Presentation] Experimental study of condensation in the system Mg-Si-O by a newly developed infrared vacuum furnace (2008)
  • Author(s): Tachibana, S., Tamada, S., Nagahara, H. and Ozawa, K.
  • Organizer: 39^<th> Lunar Planet. Sci. Conf
  • Place of Presentation: Houston, Texas
• [Presentation] Effects of anisotropic evaporation of circumstellar forsterite on infrared spectra (2008)
  • Author(s): Takigawa, A., Tachibana, S. and Nagahara,H.
  • Organizer: 39^<th> Lunar Planet. Sci. Conf
  • Place of Presentation: Houston, Texas
• [Presentation] Experimental study of reactionbetween forsterite and Si-rich gas (2008)
  • Author(s): Chiba, H., Tachibana, S. and Nagahara, H.
  • Organizer: 39^<th> Lunar Planet. Sci. Conf
  • Place of Presentation: Houston, Texas
• [Presentation] Condensation of metallic iron : the role of temperature s of gas and condensed phase (2008)
  • Author(s): Nomura, R., Nagahara, H. and Tachibana, S.
  • Organizer: 39^<th> Lunar Planet. Sci. Conf
  • Place of Presentation: Houston, Texas
• [Presentation] The role of heterogeneous condensation on dust formation in protoplanetary disc (2008)
  • Author(s): Nagahara, H. and Ozawa, K.
  • Organizer: 5th Ann. General. Meeting of Asia Oceanic Geoscience Society
  • Place of Presentation: Pusan, Korea
• [Presentation] Condensation experiments in the system of Mg-Si-O and its application to dust-formation in mass-loss winds from evolved stars (2008)
  • Author(s): Tachibana, S., Tamada, S. and Nagahara, H.
  • Organizer: 5th Ann. General. Meeting of Asia Oceanic Geoscience Society
  • Place of Presentation: Pusan, Korea
• [Presentation] The role of temperatures of gas and condensed phase in condensation kinetics of metallic Iron (2008)
  • Author(s): Nomura, R., Nagahara, H. and Tachibana, S.
  • Organizer: Meeting of Asia Oceanic Geoscience Society
  • Place of Presentation: Pusan, Korea
• [Presentation] Solid-gas reaction experiments between forsterite and Si-rich gas (2008)
  • Author(s): Chiba, H., Tachibana, S. and Nagahara, H.
  • Organizer: 5th Ann. General. Meeting of Asia Oceanic Geoscience Society
  • Place of Presentation: Pusan, Korea
• [Presentation] Genetic relationships among types of CAIs and chondrules (2008)
  • Author(s): Nagahara, H. and Ozawa, K.
  • Organizer: 71st Annual Meeting of the Meteoritical Society
  • Place of Presentation: Matsue
• [Presentation] Non-equilibrium condensation in the Mg-Si-O system : An experimental study (2008)
  • Author(s): Tachibana, S., Nagahara, H., Ozawa, K. and Tamada, S.
  • Organizer: 71st Annual Meeting of the Meteoritical Society
  • Place of Presentation: Matsue
• [Presentation] Shape effects of crystalline silicate on IR spectra and anisotropic evaporation of forsterite as a possible process for shape change (2008)
  • Author(s): Takigawa, A., Tachibana, S. and Nagahara, H.
  • Organizer: Workshop "Cosmic Dust : Near and Far"
  • Place of Presentation: Heidelberg, Germany
• [Presentation] Evaporation anisotropy of forsterite and its implication for dust formation environment (2008)
  • Author(s): Takigawa, A., Tachibana, S. and Nagahara, H.
  • Organizer: Workshop "AGB stars"
  • Place of Presentation: Tokyo
• [Presentation] Mg-Si-O系ガスからのマグネシウム珪酸塩の凝縮 (2008)
  • Author(s): 橘省吾・玉田真之介・永原裕子・小澤一仁
  • Organizer: 日本天文学会2008年春季年会
  • Place of Presentation: 東京
• [Presentation] 星周フォルステライトダストの形状変化と赤外スペクトルの関係 (2008)
  • Author(s): 瀧川晶・橘省吾・永原裕子
  • Organizer: 日本天文学会2008年春季年会
  • Place of Presentation: 東京
• [Presentation] 不均質核形成によるダスト成長 (2008)
  • Author(s): 永原裕子・小澤一仁
  • Organizer: 日本地球惑星連合2008年大会
  • Place of Presentation: 幕張
• [Presentation] The effect of temperatures of gas and condensed phase on condensation kinetics of metallic iron. (2008)
  • Author(s): 野村龍一, 他
  • Organizer: 地球惑星科学関連学会2008年合同大会
  • Place of Presentation: 幕張メッセ国際会議場
• [Presentation] カイネティクスが凝縮相におよぼす影響について (2007)
  • Author(s): 永原 裕子・小澤 一仁
  • Organizer: 第26回Grain Formation Workshop
  • Place of Presentation: 東京
  • Year and Date: 2007-12-22
• [Presentation] 星周フォルステライトの異方的蒸発 (2007)
  • Author(s): 瀧川 晶・橘 省吾・永原 裕子・小澤 一仁
  • Organizer: 第26回Grain Formation Workshop
  • Place of Presentation: 東京
  • Year and Date: 2007-12-21
• [Presentation] 星周塵赤外観測に向けたフォルステライト蒸発異方性の温度・水素圧力依存性 (2007)
  • Author(s): 瀧川 晶・橘 省吾・永原 裕子・小澤 一仁
  • Organizer: 日本惑星科学会秋期講演会
  • Place of Presentation: 高知
  • Year and Date: 2007-09-29
• [Presentation] ケイ酸塩/金属粒子の凝縮とダストの化学進化 (2007)
  • Author(s): 永原 裕子・小澤 一仁
  • Organizer: 日本惑星科学会秋期講演会
  • Place of Presentation: 高知
  • Year and Date: 2007-09-26
• [Presentation] 分子線エピタキシー型装置を用いたエンスタタイト形成実験 (2007)
  • Author(s): 橘省 吾・永原 裕子・小澤 一仁
  • Organizer: 日本惑星科学会秋期講演会
  • Place of Presentation: 高知
  • Year and Date: 2007-09-26
• [Presentation] フォルステライトと金属鉄の凝縮カイネティクスと珪酸塩/金属化学分別 (2007)
  • Author(s): 永原 裕子
  • Organizer: 日本鉱物科学会年会
  • Place of Presentation: 東京
  • Year and Date: 2007-09-23
• [Presentation] 分子線エピタキシー型装置によるフォルステライトとケイ素に富むガスの反応実験 (2007)
  • Author(s): 橘省 吾・永原 裕子・小澤 一仁
  • Organizer: 日本鉱物科学会年会
  • Place of Presentation: 東京
  • Year and Date: 2007-09-23
• [Presentation] 星周環境における結晶フォルステライトの蒸発異方性 (2007)
  • Author(s): 瀧川 晶・橘 省吾・永原 裕子・小澤 一仁
  • Organizer: 日本鉱物科学会年会
  • Place of Presentation: 東京
  • Year and Date: 2007-09-21
• [Presentation] Klnetlcs of condensation and growth of sllicate and metal dusts,and its impllcatlon to chen (2007)
  • Author(s): Nagahara, H. and Ozawa, K
  • Organizer: 70th Ann.Meeting of the Meteoritical Society
  • Place of Presentation: Arizona,Tucson
  • Year and Date: 2007-08-17
• [Presentation] Isotopic fractionation of iron during kinetic evaporation of metallic iron (2007)
  • Author(s): Tachibana, S., Nagahara, H., Ozawa, K., and Yamada, M.
  • Organizer: 70th Ann.Meeting of the Meteoritical Society
  • Place of Presentation: Arizona,Tucson
  • Year and Date: 2007-08-17
• [Presentation] Anisotropic evaporation of forsterite in protoplanetary discs and its effects on infrared spel (2007)
  • Author(s): Takigawa, A., Yokoyama, M., Tachibana, S., Nagahara, H., and Ozawa K.
  • Organizer: 70th Ann.Meethlg of the Meteoritical Society
  • Place of Presentation: Arizona,Tucson
  • Year and Date: 2007-08-17
• [Presentation] 星周円盤におけるフォルステライトと鉄粒子の進化 (2007)
  • Author(s): 永原 裕子・小澤 一仁
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2007-05-24
• [Presentation] 鉄の凝縮係数の決定と初期惑星系円盤における鉄凝縮モード (2007)
  • Author(s): 池田 陽平, 橘 省吾, 永原 裕子, 小沢 一仁
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2007-05-24
• [Presentation] 原始惑星系円盤環境におけるフォルステライトの蒸発異方性の赤外線スペクトルへの効果 (2007)
  • Author(s): 瀧川 晶, 横山 聖典, 橘 省吾, 永原 裕子
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2007-05-24
• [Presentation] Internal structure of two-pyroxene spinel symplectites: EBSD study on Horoman pehdotite (2007)
  • Author(s): 小田島 庸浩, 森下 知晃, 小沢 一仁
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2007-05-22
• [Presentation] Evolution of fcrrsterite and metallic iron dust in circumstellar discs (2007)
  • Author(s): Nagahara, H., Ozawa, K.
  • Organizer: Eruop. Geosci. Union General Assembly
  • Place of Presentation: Viema,Austria
  • Year and Date: 2007-04-18
• [Presentation] フォルステライトと金属鉄の凝縮カイネティクスと珪酸塩/金属化学分別 (2007)
  • Author(s): 永原裕子
  • Organizer: 日本鉱物科学会2007年会
  • Place of Presentation: 東京
• [Presentation] Condensation kinetics of forsterite and metal and chemical fractionation in the proto Solar Nebula (2007)
  • Author(s): Nagahara, H. and Ozawa, K.
  • Organizer: 40^<th> Lunar Planet. Sci. Conf.
  • Place of Presentation: Houston, Texas
• [Presentation] Experimenta condensation of metallic iron at controlled supersaturation. (2007)
  • Author(s): Ikeda, Y., Nagahara, H., Ozawa, K. and Tachibana, S.
  • Organizer: 38th Lunar Planet. Sci. Conf.
  • Place of Presentation: Houston, Texas
• [Presentation] Anisotropic evaporation of forsterite in hydrogen gas (2007)
  • Author(s): Yokoyama, M., Takigawa, A., Tachibana, S., Nagahara, H., Ozawa, K.
  • Organizer: 38th Lunar Planet. Sci.
  • Place of Presentation: Houston, Texas
• [Presentation] 60Fe-60Ni systems inferromagnesian chondrules in leastequilibrated ordinary chondrites (2007)
  • Author(s): Tachibana S., Huss G. and Rnagashima K.
  • Organizer: 38th Lunar Planet. Sci. Conf.
  • Place of Presentation: Houston, Texas
• [Presentation] Evolution of for sterite and metallic iron dust in circumstellar discs. 2007 Europ. Geosci (2007)
  • Author(s): Nagahara, H. and Ozawa, K.
  • Organizer: Union General Assembly
  • Place of Presentation: Vienna, Austria20070415-20
• [Presentation] Kinetics of condensation and growth of silicate and metal dusts, and its implication to chemical heterogeneity in the protosolar disc (2007)
  • Author(s): Nagahara, H. and Ozawa, K.
  • Organizer: 70th Ann. Meeting Met. Soc.
  • Place of Presentation: Tucson, Arizona
• [Presentation] Isotopicfractionation of iron during kineticevaporation of metallic iron (2007)
  • Author(s): Tachibana, S., Nagahara, H., Ozawa, K. and Yamada, M.
  • Organizer: 70th Ann. Meeting Met. Soc.
  • Place of Presentation: Tucson, Arizona
• [Presentation] Anisotropic evaporation of forsterite in protoplanetary discs and its effects on infrared spectra (2007)
  • Author(s): Takigawa, A., Yokoyama, M., Tachibana, S., Nagahara, H. and Ozawa, K.
  • Organizer: 70th Ann. Meeting Met. Soc.
  • Place of Presentation: Tucson, Arizona
• [Presentation] A mixing-fallback supernova as a possible source of short-lived radionuclides in the early solar system. Workshop on the Chronology of (2007)
  • Author(s): Tachibana S., Takigawa A., Miki J. and Yoshida T.
  • Organizer: Meteorites and the Early Solar System
  • Place of Presentation: Sheraton Kauai Resort, Kauai
• [Presentation] Evaporation and condensation kinetics for minerals and silicate melt (2006)
  • Author(s): Nagahara, H.
  • Organizer: 19thGeneral Meeting of the International Mineralogical Association
  • Place of Presentation: Kobe
• [Presentation] Condensation of forsterite and metallic iron around evolved and young stars (2006)
  • Author(s): Nagahara, H., Ozawa, K., Ikeda, Y. and Tachibana, S.
  • Organizer: 37th Lunar Planet Sci. Conf.
  • Place of Presentation: Tucson, Arizona
• [Presentation] Systematic oxygen isotopic variations among chondrules from the least equilibrated ordinary chondrites (2006)
  • Author(s): Kita, N. T., Nagahara, H., Tomomura, S., Tachibana, S. and Valley, J. W.
  • Organizer: 37th Lunar Planet Sci. Conf.
  • Place of Presentation: Tucson, Arizona
• [Presentation] Experimental condensation of crystalline magnesium-rich silicates (2006)
  • Author(s): Ogawa, R., Nagahara, H., Ozawa, K. and Tachibana, S.
  • Organizer: 37th Lunar Planet Sci. Conf.
  • Place of Presentation: Houston, Texas
• [Presentation] Constraints on cooling rates of chondrules from metal-troilite assemblages (2006)
  • Author(s): Tachibana, S., Nagahara, H. and Mizuno, K.
  • Organizer: 37th Lunar Planet Sci. Conf.
  • Place of Presentation: Houston
• [Presentation] Evaporation anisotropy of olivine (2006)
  • Author(s): Matsumoto, N., Nagahara, H., Ozawa, K. and Tachibana, S.
  • Organizer: 19th General Meeting of the International Mineralogical Association
  • Place of Presentation: Kobe
• [Presentation] Evaporation of forsterite in vacuum : anisotropy in rates and Mg isotopic mass fractionation (2006)
  • Author(s): Yamada, M., Tachibana, S., Nagahara, H., Ozawa, K. and Matsumoto, N.
  • Organizer: 19thGeneral Meeting of the International Mineralogical Association
  • Place of Presentation: Kobe
• [Presentation] Melt condensation for the origin ofchondrules in ordinary chondrites inferredfrom bulk chemical composition andmass-dependent oxygen isotopicfractionation. (2006)
  • Author(s): Nagahara, H., Kita, N. T. and Ozawa, K.
  • Organizer: 69th Ann. Meeting Meteorit.Society
  • Place of Presentation: Zurich, Switzerland
• [Presentation] Experimental study of kinetic condensation of metallic iron under controlled supersaturation (2006)
  • Author(s): Tachibana, S., Ikeda, Y., Nagahara, H., Ozawa, K. and Yamada, M.
  • Organizer: 69th Ann. Meeting Meteoritical Society
  • Place of Presentation: Zurich, Switzerland
• [Presentation] Condensation of forsterite and metallic iron around evolved and young stars (2006)
  • Author(s): Nagahara, H., Ozawa, K., Ikeda, Y. and Tachibana, S.
  • Organizer: The 37th Lunar and Planetary Science Conference
  • Place of Presentation: Houston
• [Presentation] The role of condensation kinetics of silicate melt on the chemical variation of chondrules (2005)
  • Author(s): Nagahara, H., Ozawa, K. and Tomomura, S.
  • Organizer: 29th Antarct. Met. Symp
• [Presentation] olution of CAIs and CaAl-rich chondrulesand ferromagnesian chondrules throughequilibrium and disequilibriumcondensation (2005)
  • Organizer: 28th Met. Soc. Meeting.,Tenessee Astrophysics andCosmology
  • Place of Presentation: University of Tokyo, Tokyo
• [Book] 太陽系内の惑星と生命 (2008)
  • Author(s): 永原裕子
  • Publisher: ニュートンムック未解決の天文学
• [Book] 惑星地質学 (2008)
  • Author(s): 橘省吾
  • Publisher: 東京大学出版会
• [Book] 太陽系と惑星 (2007)
  • Author(s): 橘省吾
  • Publisher: 日本評論社
• [Book] Meteorites and the Early Solar System II (2006)
  • Author(s): Lauretta, D.S., Nagahara, H., Alexander, C.M.O'D.
  • Total Pages: 943
  • Publisher: Univ. Arizona Press
• [Book] Meteorites and the Early Solar System II (2006)
  • Author(s): Lauretta, D., Nagahara, H., Alexander, C.
  • Publisher: Petrology of ferromagnesian silicate chondrles(In press)
• [Book] 進化する地球惑星システム (2004)
  • Author(s): 太陽系の原物質とその進化
  • Total Pages: 236
  • Publisher: 東京大学出版会
• [Remarks] 研究室見学受け入れ水戸二高地学部・SSHクラス35名(2009.3.21)
• [Remarks] 女子中高生夏の学校2008150名
• [Remarks] 茨城県高校生冬季天体観測合宿「実験室から宇宙を覗いてみよう」180 名
• [Remarks] 東京大学創立130周年記念事業公開講座『異星の踏査ー「アポロ」から「はやぶさ」へ』30 名
• [Remarks] 高校生・大学生のための地球惑星科学公開シンポジウム「実験室から探る太陽系創世記 : 惑星物質科学の最前線」65名
• [Remarks] 第7回地球システム・地球進化ニューイヤースクール「太陽系の誕生・進化を実験室からさぐる」120 名(2009.1.10)
• [Remarks] 第2回日本地球化学会ショートコース「宇宙化学・惑星化学」 50 名
• [Remarks] 日本真空展一般講演会 「実験室でさぐる太陽系と星たち」 80 名
• [Remarks]
  • URL: http://www-sys.eps.s.u-tokyo.ac.jp/member/nagahara.html
• [Remarks]
  • URL: http://www-sys.eps.s.u-tokyo.ac.jp/~tachi/research.html