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大型計算機シミュレーションによる星・惑星系の形成過程の理論的研究

Research Project

Project/Area Number 10147105
Research Category

Grant-in-Aid for Scientific Research on Priority Areas (A)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionNational Astronomical Observatory of Japan

Principal Investigator

観山 正見  国立天文台, 理論天文学研究系, 教授 (00166191)

Co-Investigator(Kenkyū-buntansha) 中川 義次  神戸大学, 理学部, 教授 (30172282)
富阪 幸治  国立天文台, 理論天文学研究系, 教授 (70183879)
羽部 朝男  北海道大学, 大学院・理学研究科, 助教授 (90180926)
松元 亮治  千葉大学, 理学部, 教授 (00209660)
花輪 知幸  名古屋大学, 大学院・理学研究科, 助教授 (50172953)
Project Period (FY) 1998 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥85,400,000 (Direct Cost: ¥85,400,000)
Fiscal Year 2001: ¥21,300,000 (Direct Cost: ¥21,300,000)
Fiscal Year 2000: ¥22,300,000 (Direct Cost: ¥22,300,000)
Fiscal Year 1999: ¥21,800,000 (Direct Cost: ¥21,800,000)
Fiscal Year 1998: ¥20,000,000 (Direct Cost: ¥20,000,000)
Keywords数値シミュレーション / 星形成 / 惑星形成 / マゼラン星雲 / 輻射輸送 / 星間ガス雲 / 連星 / 分子雲 / 幅射輸送
Research Abstract

近年の観測技術の進歩によって星の形成過程や惑星系の母胎である原始惑星系円盤の物理が、構造論的にも進化論的にも観測的に明らかとなっている。それらの構造や進化の観測的事象から、総括的及び普遍的な星・惑星系の形成論の構築に至るためには、基礎物理学の蓄積に基づいた理論的現象の把握が極めて重要となる。この点で、基礎理論を踏まえた数値シミュレーションの実行は、観測との直接比較検討を可能にする上でも、また天体現象を実験的に把握する上でも、現象の理論的解析に極めて有効である。
本年度は平成10年から始まった当特定研究の最終年度に当たり、4年間のそれぞれの分野のまとめ的研究の推進がなされた。それらを踏まえてまとめの研究発表会も行われた。数ある成果の中で、一つのトピックスは、宇宙初期の初代星形成やマゼラン星雲のようなメタル量が極端に少ないガス雲における星形成の研究である。宇宙論的観測が進むにつれて、理論的に初代の星などはいかなる形成過程をたどったのかを解明してきたが、今後は観測への予言をいかに行えるかが焦点と思われる。また、熱的相互作用を含んだ分子雲の形成過程、磁場や回転を伴ったガス雲の収縮過程の研究は、高精度シミュレーションを行って詳細に解明されてきた。特に分子雲レベルから原始星への収縮、円盤の形成、並びに、ジェットの発生といったオーバーオールな星形成過程が追跡できるようになったことは、極めて大きな進展と考えられる。これらの結果と観測との詳細な比較が今後期待される。更に、磁気流体過程のシミュレーションも大幅な進展が達成されたと考える。磁気回転不安定性やジェットのコリメーションといった基礎過程の解明と共に、具体的天体モデルへの応用など観測現象の説明など進展がめざましい。この分野の研究は世界をリードしていて今後のさらなる進展が期待される。惑星形成や原始惑星系円盤の研究成果が推進した。当特定研究の初期には円盤からのスペクトルを説明すると行った大きな成果がもたらされたが、その後も連星系と円盤の相互作用のシミュレーションや円盤内での隕石内物質の形成過程など幅広い研究が行われた。

Report

(4 results)
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (200 results)

All Other

All Publications (200 results)

  • [Publications] Ando, M.: "Stable operation of a 300-m laser interferometer with sufficient sensitivity to detect gravitational-wave events within our galaxy"Phys.Rev.Lett.,. 86. 3950-3954 (2001)

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      2001 Annual Research Report
  • [Publications] Tagoshi, H.: "First search for gravitational waves from inspiraling compact binaries using TAMA300 data"Phys.Rev.D,. 63. 062001-1-062001-5 (2001)

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      2001 Annual Research Report
  • [Publications] Sano, T.: "Magnetorotational Instability in Protoplanetary Disks.II.Ionization State of the Gas and Unstable Region"The Astrophysical Journal. 543. 486-501 (2000)

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      2001 Annual Research Report
  • [Publications] Korchagin, V.I.: "Global Spiral Mode in NGC 1566 : Observation and Theory"The Astrophysical Journal. 541. 565-578 (2000)

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      2001 Annual Research Report
  • [Publications] Kaifu, N.: "The First Light of the Subaru Telescope : A New Infrared Image of the Orion Nebula"Publ.Astron.Soc.Japan. 52. 1-8 (2000)

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      2001 Annual Research Report
  • [Publications] Korchagin, V.I.: "On the Origin of Faint Intracluster Starlight in Coma"The Astrophysical Journal. 549. 244-247 (2000)

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      2001 Annual Research Report
  • [Publications] Ito, T.: "An Estimation of Upper Limit Masses of υ Andromedae Planets"The Astrophysical Journal. 552. 372-379 (2000)

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      2001 Annual Research Report
  • [Publications] Sano, T.: "Magnetorotational Instability in Protoplanetary Disks.I.On the Global Stability of Weakly Ionized Disk with Ohmic Dissipation"The Astrophysical Journal. 515. 776-786 (1999)

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      2001 Annual Research Report
  • [Publications] Aikawa, Y.: "Evolution of Molecular Abundance in Proto-planetary Disk with Accretion Flow"The Astrophysical Journal. 519. 705-725 (1999)

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      2001 Annual Research Report
  • [Publications] Masunaga, H.: "A Radiative Hydrodynamical Model For Protostellar Collapse I.The First Collapse"The Astrophysical Journal. 495. 346-369 (1998)

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      2001 Annual Research Report
  • [Publications] Takeuchi, T.: "Wave Excitation in Isothermal Disk by External Gravity"Publ.Astron.Soc.Japan. 50. 141-148 (1998)

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      2001 Annual Research Report
  • [Publications] Sano, T.: "A Saturation Mechanism of Magnetorotational Instability Due to Ohmic Dissipation"The Astrophysical Journal. 506. L57-L60 (1998)

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      2001 Annual Research Report
  • [Publications] Nagai T.: "An Origin of Filamentary Structure in Molecular Cloud"The Astrophysical Journal. 506. 306-322 (1998)

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      2001 Annual Research Report
  • [Publications] Sakamoto, Kazushi: "Millimetric Observations of the Center of M81 : A Starved Nucleus with Intraday Variability"Astron.J.. 122. 1319-1329 (2001)

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      2001 Annual Research Report
  • [Publications] Takashi Okamoto: "Evolution of cluster galaxies in hierarchical clustering"PASJ. 52. 457-462 (2000)

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      2001 Annual Research Report
  • [Publications] Fukuda, H.: "The Effect of Self-gravity of Gas on Gas Fueling in Barred Galaxies with a Supermassive Black Hole"The Astrophysical Journal. 529. 109-115 (2000)

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      2001 Annual Research Report
  • [Publications] Takashi Okamoto: "Formation and Evolution of Galactic Halos in Clusters of Galaxies"The Astrophysical Journal. 516. 591-603 (1999)

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      2001 Annual Research Report
  • [Publications] H.Fukuda, K.: "The effect of a central supermassive black hole on the gas fueling"MNRAS. 295. 463-474 (1998)

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      2001 Annual Research Report
  • [Publications] NISIKAWA A.: "Cooling Flows Induced by Compton Cooling due to Luminous Quasars in Clusters of Galaxies"MNRAS. 295. 632-640 (1998)

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      2001 Annual Research Report
  • [Publications] Fukuda, H.: "Effects of a Supermassive Black Hole on Nuclear Gas Dynamics"Star Formation 1999, Proceedings of Star Formation. 42-43 (1999)

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      2001 Annual Research Report
  • [Publications] Habe, A.: "Evolution of a Cloud System in a Gas Rich Dwarf Galaxy"Star Formation 1999, Proceedings of Star Formation 1999. 38-39 (1999)

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      2001 Annual Research Report
  • [Publications] K.Tomisaka: "Collapse of Rotating Magnetized Molecular Cloud Core and Mass Outflows"Astrophysical Journal. (submitted). (2001)

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      2001 Annual Research Report
  • [Publications] K.Tomisaka: "Outflow from YSO and Angular Momentum Transfer "The Formation of Bir Stars" ed. H.Zinnecker & R.D.Mathieu"Astronomical Society of the Pacific: San Francisco). 401-405 (2001)

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      2001 Annual Research Report
  • [Publications] K.Tomisaka: "Collapse-Driven Outflow in Star-Forming Molecular Cores""Star Formation 1999" ed. T.Nakamoto(Nobeyama Radio Observatory). 197-198 (2000)

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      2001 Annual Research Report
  • [Publications] K.Tomisaka: "The Evolution of the Angular Momentum Distribution during Star Formation"The Astrophysical Journal, Letters. 528. L41-L44 (2000)

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      2001 Annual Research Report
  • [Publications] K.Tomisaka: "Outflows from YSO's and the Angular Momentum of New-Born Stars""Star Formation from the Small to the Large Scale" ed. F.Favata (ESA,Noordwijk). 141-148 (2000)

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      2001 Annual Research Report
  • [Publications] S.Ogino: "Gravitational Collapse of Spherical Isothermal Clouds"Publ. Astron. Soc. Japan. 51. 637-651 (1999)

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  • [Publications] F.Nakamura: "Collapse of Isothermal Magnetized Clouds : Universality of Self-similar Collapse"The Astrophysical Journal. 510. 274-290 (1999)

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      2001 Annual Research Report
  • [Publications] K.Tomisaka: "Gravitational Contraction of Magnetized Clouds"Numerical Astrophysics, eds. S.M.Miyama, K.Tomisaka, & T.Hanawa, (Kluwer Academic Publishers: Dordrecht). 141-150 (1999)

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  • [Publications] S.M.Miyama: "Numerical Astrophysics"Numerical Astrophysics (Dordrecht: Kluwer Academic Publishers). 437 (1999)

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      2001 Annual Research Report
  • [Publications] K.Tomisaka: "Collapse-Driven Outflow in Star-Forming Molecular Cores"The Astrophysical Journal, Letters. 502. 163-167 (1998)

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      2001 Annual Research Report
  • [Publications] K.Tomisaka: "Superbubbles in Magnetized Interstellar Media : Blowout or Confinement?"MNRAS. 298. 797-810 (1998)

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      2001 Annual Research Report
  • [Publications] J.C.Houck: "Recent X-ray Observations of SN 1986J with ASCA and ROSAT"The Astrophysical Journal. 493. 431-439 (1998)

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      2001 Annual Research Report
  • [Publications] T.Nakamoto: "3D Radiative Transfer Effects on the Cosmic Reionization"Physics of Galaxy Formation in eds. H.Susa and M.Umemura. 143-148 (2001)

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      2001 Annual Research Report
  • [Publications] T.Nakamoto: "The Effects of Radiative Transfer on the Reionization of an Inhomogeneous Universe"MNRAS. 321. 593-604 (2001)

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      2001 Annual Research Report
  • [Publications] T.Nakamoto: "Minimum Mass of Brown Dwarfs"Planetary Systems in the Universe: Observation, Formation and Evolution, eds A.Penny, P.Artymowicz, A.-M.Lagrange, and S.Russell. (in press). (2001)

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  • [Publications] A.Iida: "A Shock Heating Model for Chondrule Formation in a Protoplanetary Disk"Icarus. (in press). (2001)

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      2001 Annual Research Report
  • [Publications] H.Susa: "On the Maximal Size of Chondrules in Shock-Wave Heating Model"The Astrophysical Journal. (in press). (2001)

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      2001 Annual Research Report
  • [Publications] 中本 泰史: "多次元輻射輸送計算コードの超並列計算機への実装 : Multiple Wave Front法"情報処理学会研究報告. 98-HPC-74. 43-48 (1998)

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      2001 Annual Research Report
  • [Publications] T.Nakamoto: "A 3-D Radiative Transfer Solver using a Massively Parallel Computer"Numerical Astrophysics 1998 eds. S.M.Miyama, K.Tomisaka, & T.Hanawa, Kluwer Academic Publishers: Dordrecht. 375-378 (1999)

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      2001 Annual Research Report
  • [Publications] K.Ogochi: "Radiation Hydrodynamical Simulations of Gravitational Collapse of Filamentary Gas Clouds"Numerical Astrophysics 1998 eds. S.M.Miyama, K.Tomisaka, & T.Hanawa, Kluwer Academic Publishers: Dordrecht. 171-172 (1999)

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      2001 Annual Research Report
  • [Publications] N.Kikuchi: "SEDs and IR Images of Disks around YSOs"Numerical Astrophysics 1998 eds. S.M.Miyama, K.Tomisaka, & T.Hanawa, Kluwer Academic Publishers: Dordrecht. 181-182 (1999)

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      2001 Annual Research Report
  • [Publications] T.Nakamoto: "Spectral Modeling of YSOs"Star Formation 1999 ed. T.Nakamoto (Nobeyama Radio Observatory: Nobeyama). 217-220 (1999)

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      2001 Annual Research Report
  • [Publications] N.Kikuchi: "Model Infrared Images and Spectra of Disks around YSOs"Star Formation 1999 ed. T.Nakamoto (Nobeyama Radio Observatory: Nobeyama). 233-234 (1999)

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      2001 Annual Research Report
  • [Publications] K.Ogochi: "The Gravitational Collapse of Filaments : 1D RHD Simulations"Star Formation 1999 ed. T.Nakamoto (Nobeyama Radio Observatory: Nobeyama). 193-194 (1999)

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      2001 Annual Research Report
  • [Publications] A.Iida: "Shock Temperature at a Protoplanetary Disk Surface"Star Formation 1999 ed. T.Nakamoto (Nobeyama Radio Observatory: Nobeyama). 243-244 (1999)

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      2001 Annual Research Report
  • [Publications] T.Hanawa: "Perturbation Growing in the Main Accretion Phase"The Astrophysical Journal. 558, No.2. 753-760 (2001)

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      2001 Annual Research Report
  • [Publications] 花輪 知幸: "星形成の物理"プラズマ・核融合学会誌. 77, No.8. 755-762 (2001)

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      2001 Annual Research Report
  • [Publications] T.Hanawa: "Growth of a Vortex Mode during Gravitational Collapse Resulting in Type II Supernova"The Astrophysical Journal. 540, No.2. 962-968 (2000)

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      2001 Annual Research Report
  • [Publications] N.Fukuda: "Sequential Star Formation Triggered by Expansion of HII Region"The Astrophysical Journal. 533, No.2. 911-923 (2000)

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      2001 Annual Research Report
  • [Publications] K.Saigo: "Collapse of Rotating Gas Cloud and Formation of Protostellar Disk : Effects of Temperature Change during Collapse"The Astrophysical Journal. 531, No.2. 971-987 (2000)

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      2001 Annual Research Report
  • [Publications] T.Hanawa: "Stability of a Dynamically Collapsing Gas Sphere"Publ.Astron.Soc.Japan. 52, No.2. 241-247 (2000)

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      2001 Annual Research Report
  • [Publications] T.Hanawa: "Growth of a Bar Perturbation during Isothermal Collapse"The Astrophysical Journal. 521, No.2. 703-707 (1999)

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      2001 Annual Research Report
  • [Publications] T.Matsumoto: "Bar and Disk Formation in Gravitationally Collapsing Clouds : Implications for Binary Formation"The Astrophysical Journal. 521, No.2. 659-670 (1999)

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      2001 Annual Research Report
  • [Publications] N.Fukuda: "Gravitational and Parametric Instabilities of the Interstellar Medium in Which the Alfven Wave Travels"The Astrophysical Journal. 517, No.1. 226-241 (1999)

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      2001 Annual Research Report
  • [Publications] K.Nobuta: "Jets from Time-Dependent Accretion Flows onto a Black Hole"The Astrophysical Journal. 510, No.2. 614-630 (1999)

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      2001 Annual Research Report
  • [Publications] F.Nakamura: "Gravitational Collapse of Isothermal Magnetized Clouds : The Universality of Sensimilar Collapse"The Astrophysical Journal. 510, No.1. 274-290 (1999)

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      2001 Annual Research Report
  • [Publications] 花輪 知幸: "星形成"活動する宇宙 ed. 柴田 一成、福江 純、松元 亮治、嶺重 慎,(裳華房,東京). 79-100 (1999)

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      2001 Annual Research Report
  • [Publications] N.Fukuda: "Triggered Star Formation in Filamentary Molecular Cloud"Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21-25,1999, Editor: T.Nakamoto, (Nobeyama Radio Observatory, Nobeyama). 369-370 (1999)

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      2001 Annual Research Report
  • [Publications] T.Matsumoto: "Deformation of a Gravitationally Collapsing Molecular Cloud Core : Bar and Disk Formation Followed by Binary Formation"Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21-25,1999, Editor: T.Nakamoto, (Nobeyama Radio Observatory, Nobeyama). 201-202 (1999)

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      2001 Annual Research Report
  • [Publications] K.Saigo: "Collapse of Rotating Gas Cloud and Formation of Protostellar Disk : Effects of Temperature Change during Collapse"Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21-25,1999, Editor: T.Nakamoto, (Nobeyama Radio Observatory, Nobeyama). 195-196 (1999)

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      2001 Annual Research Report
  • [Publications] T.Hanawa: "Bar Mode Instability in Gravitational Collapsing Cloud Core"Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21-25,1999, Editor: T.Nakamoto, (Nobeyama Radio Observatory, Nobeyama). 201-202 (1999)

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      2001 Annual Research Report
  • [Publications] N.Fukuda: "A Second Order Accurate Numerical Scheme for MHD Equations"Numerical Astrophysics : Proceedings of the International Conference on Numerical Astrophysics 1998 (NAP98) Edited by Shoken M.Miyama, Kohji Tomisaka, and Tomoyuki Hanawa,(Kluwer, Dordrecht). 387-388 (1999)

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      2001 Annual Research Report
  • [Publications] K.Nobuta: "Jets from Time-Dependent Accretion Flows onto a Black Hole"Numerical Astrophysics : Proceedings of the International Conference on Numerical Astrophysics 1998 (NAP98), Edited by Shoken M.Miyama, Kohji Tomisaka, and Tomoyuki Hanawa,(Kluwer, Dordrecht). 219-220 (1999)

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      2001 Annual Research Report
  • [Publications] T.Hanawa: "Gravitational Collapse of a Filamentary Molecular Cloud Triggered by HII Region"Numerical Astrophysics : Proceedings of the International Conference on Numerical Astrophysics 1998 (NAP98) Edited by Shoken M.Miyama, Kohji Tomisaka, and Tomoyuki Hanawa,(Kluwer, Dordrecht). 173-174 (1999)

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      2001 Annual Research Report
  • [Publications] K.Saigo: "Dynamical Contraction of Rotating Polytropic Gas Disk"Numerical Astrophysics : Proceedings of the International Conference on Numerical Astrophysics 1998 (NAP98) Edited by Shoken M.Miyama, Kohji Tomisaka, and Tomoyuki Hanawa,(Kluwer, Dordrecht). 173-174 (1999)

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      2001 Annual Research Report
  • [Publications] T.Matsumoto: "Gravitational Collapse of Rotating Clouds : Bar and Disk Formation in a Self-Similar Contracting Clouds"Numerical Astrophysics : Proceedings of the International Conference on Numerical Astrophysics 1998 (NAP98) Edited by Shoken M.Miyama, Kohji Tomisaka, and Tomoyuki Hanawa,(Kluwer, Dordrecht). 151-154 (1999)

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  • [Publications] T.Kawachi: "Gravitational Collapse of Filamentary Clouds"Publ.Astron.Soc.Japan. 50, No.6. 577-586 (1998)

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  • [Publications] Y.Nakajima: "Clustering of Pre-Main Sequence Stars in the Orion, Ophiuchus, Chamaeleon, Vela and Lupus Star Forming Regions"The Astrophysical Journal. 497, No.2. 721-735 (1998)

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      2001 Annual Research Report
  • [Publications] Masako Yamada: "Dynamical Effect by Grobal Thermal Instability of Shock-compressed Gas Slab"The Astrophysical Journal. 547. 99-108 (2001)

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  • [Publications] Ryoichi Nishi: "On the Decelerating Shock Instability of Plane-Palallel Slab with Finite Thickness"The Astrophysical Journal. 532. 1172-1180 (2000)

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  • [Publications] Hideyuki Kamaya: "Dyanamical Instability During Plasma Drift"The Astrophysical Journal. 534. 309-316 (2000)

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  • [Publications] Motomichi Tashiro: "On the Thermal Instability in a Contracting Gas Cloud and Formation of a Bound Cluster"The Astrophysical Journal. 536. 277-283 (2000)

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  • [Publications] Ryoichi Nishi: "Self-Regulation of Star Formation in Low Metallicity Clouds"The Astrophysical Journal. 537. 50-54 (2000)

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  • [Publications] Hideyuki Kamaya: "Frozen Condition for the Charged particles in Molecular Clouds"The Astrophysical Journal. 543. 257-270 (2000)

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      2001 Annual Research Report
  • [Publications] Tetsuya Shiromizu: "Back Reaction to the Spectrum of Magnetic Field in the Kinetic Dynamo Theory"Progress of Theoretical Physics. 101. 39-45 (1999)

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  • [Publications] Kazuyuki Omukai: "Photodissociative Regulation of Star Formation in Metal-free Pregalactic Clouds"The Astrophysical Journal. 518. 64-68 (1999)

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      2001 Annual Research Report
  • [Publications] Ryoichi Nishi: "Formation and Disruption of Cosmological Low Mass Objects"The Astrophysical Journal,Letters. 523. L103-L107 (1999)

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  • [Publications] Kunihito Ioka: "Keplar Rotation Effects on Binary Microlensing Events"Progress of Theoretical Physics. 102. 983-1000 (1999)

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      2001 Annual Research Report
  • [Publications] Ryoichi Nishi: "Dark Matter Search with Gravitational Microlensing Events"Progress of Theoretical Physics Supplement(1999). No.133. 211-231 (1999)

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      2001 Annual Research Report
  • [Publications] Hideyuki Kamaya: "Comments on Alfven Waves and Plasma Drift in a Slightly Ionized Gas"The Astrophysical Journal. 500. 257-261 (1998)

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      2001 Annual Research Report
  • [Publications] Kazuyuki Omukai: "Evolution of Primordial Protostellar Clouds : Quasi-static Analysis"Progress of Theoretical Physics. 99. 747-761 (1998)

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      2001 Annual Research Report
  • [Publications] Takashi Nakamura: "Expected EAGLE event rate towards the Magellanic Clouds"Progress of Theoretical Physics. 99. 963-970 (1998)

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  • [Publications] Hajime Susa: "The Thermal Evolution of the Postshock Layer in Pregalactic Clouds"Progress of Theoretical Physics. 100. 63-77 (1998)

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  • [Publications] Masako Yamada: "Fragmentation of Shock Compressed Sheet of Primordial Gas"The Astrophysical Journal. 505. 148-158 (1998)

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  • [Publications] Kazuyuki Omukai: "Formation of Primordial Protostars"The Astrophysical Journal. 508. 141-150 (1998)

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  • [Publications] Ryoichi Nishi: "Thermal and Dynamical Evolution of Primordial Gas Clouds : on the Formation on First Luminous Objects(Invited Paper)"Progress of Theoretical Physics. 100. 881-903 (1998)

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      2001 Annual Research Report
  • [Publications] Y.Nakagawa: "Possible In-Situ Formation of Close Giant Planets in Quiecent Disk Nebulae"IAU Symposium 202 "Planetary Systems in the Universe". (in press). (2001)

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      2001 Annual Research Report
  • [Publications] K.Moriwaki: "Stability of a Planet in a Binary System : MACHO-97-BLG-41 Planetary System"Bull.American Astron.Soc.. 33. 112-113 (2001)

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      2001 Annual Research Report
  • [Publications] I.Firuya: "Formation of Planetesimals through Gravitational Fragmentation of a Dust Layer : Initial Masses of Planetesimals"Bull.American Astron.Soc.. 33. 1059 (2001)

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      2001 Annual Research Report
  • [Publications] A.Iida: "A Shock Heating Model for Chondrule Formation in a Protoplanetary Disk"Icarus. 153. 430-450 (2001)

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      2001 Annual Research Report
  • [Publications] S.V.W.Beckwith: "Dust Properties and Assembly of Large Particles in Protoplanetary Disks"Protostars and Planets. IV. 534-555 (2000)

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  • [Publications] H.Takeda: "Gas Drag on a Rotating body with Gravity"Progress of Theoretical Physics. 104. 955-970 (2000)

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      2001 Annual Research Report
  • [Publications] Y.Nakagawa: "Descent of Photo-Surfaces of Protoplanetary Disks due to Particle Settling"Bull.American Astron.Soc.. 31. 1088 (1999)

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      2001 Annual Research Report
  • [Publications] A.Iida: "Shock Temperature at a Protoplanetary Disk Surface"Star Formation 1999 (T.Nakamoto, Ed.). 243-244 (1999)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Sato: "Spectral Energy Distributions of Protoplanetary Disks : Effects of Growth and Settling of Dust Particles"Star Formation 1999 (T.Nakamoto, Ed.). 235-236 (1999)

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      2001 Annual Research Report
  • [Publications] Y.Hidaka: "Settling and Growth of Fractal Dust Aggregates in a Laminar Solar Nebula"Icarus. (submitted). (1999)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.K.Tanaka: "Shock Heating due to Accretion of a Clumpy Cloud onto a Protoplanetary Disk"Icarus. 134. 137-154 (1998)

    • Related Report
      2001 Annual Research Report
  • [Publications] 中野 武宣: "宇宙におけるダストプラズマ現象"静電気学会誌. 825, No.1. 519-24 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.M.Miyama: "Numerical Astrophysics"Kluwer Academic Publishers: Dordrecht. 437 (1999)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Sano: "Magnetorotational Instability in Protoplanetary Disks.II.Ionization State of the Gas and Unstable Regions"The Astrophysical Journal. 543. 486-501 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Okamoto: "Evolution of cluster galaxies in hierarchical clustering"Publication Astronomical Society of Japan. 52. 457-463 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] R.Nishi: "On the Decelerating Shock Instability of Plane-Palallel Slab with Finite Thickness"The Astrophysical Journal. 532. 1172-1180 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Nakano: "Evolution of Protostars Accreting Mass at Very High Rates : Is Orion IRc2 a Huge Protostar?"The Astrophysical Journal. 534. 976-983 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] W.Chou: "Dynamics of the Parker-Jeans Instability in a Galactic Gaseous Disk"The Astrophysical Journal. 538. 710-727 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Hanawa: "Stability of a Dynamically Collapsing Gas Sphere"Publication Astronomical Society of Japan. 52. 241-247 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T. Sano: "Magnetorotational Instability in Protoplanetary Disks. I. On the Global Stability of Weakly Ionized Disks with Ohmic Dissipation"The Astrophysical Journal. 515. 776-786 (1999)

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      1999 Annual Research Report
  • [Publications] S.V.W. Beckwith: "Dust Properties and Assembly of Large Particles in Protoplanetary Disks"Protostars and Planets IV, ed. By V. Manning and A.P. Boss, Univ. of Arizona Press.. (in press). (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.K. Tanaka: "Shock Heating due to Accretion of a Clumpy Cloud onto a Protoplanetary Disk"Icarus. 134. 137-154 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Masunaga: "Infall Signatures in Line Spectral Profiles of Protostellar Envelopes"The Astrophysical Journal. 535(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Koyama: "Molecular Cloud Formation in Shock-Compressed Layers"The Astrophysical Journal. 533(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Uehura: "Does Deuterium enable the formation of primordial brown dwarfs?"The Astrophysical Journal Letter. 531. L91-L94 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Masunaga: "A Radiation Hydrodynamic Model for Protostellar Collapse II. The Second Collapse and the Birth of a Protostar"The Astrophysical Journal. 531. 350-365 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] N. Kaifu: "The First Light of the Subaru Telescope: A New Infrared Image of the Orion Nebula"Publication Astronomical Society of Japan. 52. 1-8 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Tsuribe: "Criteria for Fragmentation of Rotating Isothermal Clouds I: Semianalytic Approach"The Astrophysical Journal. 526. 307-312 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Tsuribe: "Criteria for Fragmentation of Rotating Isothermal Clouds Revisited"The Astrophysical Journal. 523. L155-L158 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Masunaga: "Does 'T〜1' Terminate the Isothermal Evolution of Collapsing Clouds?"The Astrophysical Journal. 510. 822-827 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Nagai: "An Origin of Filamentary Structure in Molecular Clouds"The Astrophysical Journal. 506. 306-322 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Sano: "A Saturation Mechanism of Magnetorotational Instability Due to Ohmic Dissipation"The Astrophysical Journal Letter. 506. L57-L60 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Masunaga: "A Radiation Hydrodynamical Model for Protostellar Collapse: I. The First Collapse"The Astrophysical Journal. 495. 346-369 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Nakamoto: "Spectral Modeling of YSOs"Star Formation 1999, Proceedings of the International Conference, ed. T. Nakamoto (Nobeyama Radio Observatory). 217-220 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] N. Kikuchi: "Model Infrared Images and Spectra of Disks around Young Stars"Star Formation 1999, Proceedings of the International Conference, ed. T. Nakamoto (Nobeyama Radio Observatory). 233-234 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Ogochi: "The Gravitational Collapse of Filaments: 1D RHD Simulations"Star Formation 1999, Proceedings of the International Conference, ed. T. Nakamoto (Nobeyama Radio Observatory). 193-194 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] A. Iida: "Shock Temperature at a Protoplanetary Disk Surface"Star Formation 1999, Proceedings of the International Conference, ed. T. Nakamoto (Nobeyama Radio Observatory). 243-244 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Nakamoto: "A 3-D Radiative Transfer Solver using a Massively Parallel Computer"Proceedings of Numerical Astrophysics 1998 (NAP98), ed. by S.M. Miyama, K. Tomisaka & T. Hanawa, Kluwer Academic. 375-378 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Ogochi: "Radiation Hydrodynamical Simulations of Gravitational Collapse of Filamentary Gas Clouds"Proceedings of Numerical Astrophysics 1998 (MAP98), ed. by S.M. Miyama, K. Tomisaka & T. Hanawa, Kluwer Academic. 171-172 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] N. Kikuchi: "SEDs and IR Images of Disks around YSOs"Proceedings of Numerical Astrophysics 1998 (MAP98), ed. by S.M. Miyama, K. Tomisaka & T. Hanawa, Kluwer Academic. 181-182 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Kamaya: "Comments on Alfven Waves and Plasma Drift in a Slightly Ionized Gas"The Astrophysical Journal. 500. 257-261 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Omukai: "Evolution of Primordial Protostellar Clouds: Quasi-static Analysis"Progress of Theoretical Physics. 99. 747-761 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Nakamura: "Expected EAGLE event rate towards the Magellanic Clouds"Progress of Theoretical Physics. 99. 963-970 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Susa: "The Thermal Evolution of the Postshock Layer in Pregalactic Clouds"Progress of Theoretical Physics. 100. 63-77 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] M. Yamada: "Fragmentation of Shock Compressed Sheet of Primordial Gas"The Astrophysical Journal. 505. 148-158 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Omukai: "Formation of Primordial Protostars"The Astrophysical Journal. 508. 141-150 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] R. Nishi: "Thermal and Dynamical Evolution of Primordial Gas Clouds: on the Formation of First Luminous Objects"Progress of Theoretical Physics. 100. 881-903 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Shiromizu: "Back Reaction to the Spectrum of Magnetic Field in the Kinetic Dynamo Theory"Progress of Theoretical Physics. 101. 39-45 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Omukai: "Photodissociative Regulation of Star Formation in Metal-free Pregalactic Clouds"The Astrophysical Journal. 518. 64-68 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] R. Nishi: "Formation and Disruption of Cosmological Low Mass Objects"The Astrophysical Journal Letter. 523. L103-L107 (1999)

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      1999 Annual Research Report
  • [Publications] K. Ioka: "Keplar Rotation Effects on Binary Microlensing Events"Progress of Theoretical Physics. 102. 983-1000 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] R. Nishi: "On the Decelerating Shock Instability of Plane-Palallel Stab with Finite Thickness"The Astrophysical Journal. 532(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Kamaya: "Dynamical Instability Durign Plasma Drift"The Astrophysical Journal. 533(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] M. Tashiro: "On the Thermal Instability in a Contracting Gas Cloud and Formation of a Bound Clusters"The Astrophysical Journal. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] R. Nishi: "Self-Regulation of Star Formation in Low Metallicity Clouds"The astrophysical Journal. 537(in press). (2000)

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      1999 Annual Research Report
  • [Publications] R. Nishi: "Dark Matter Search with Gravitational Microlensing Events"Progress of Theoretical Physics Supplement. 133. 211-231 (1999)

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      1999 Annual Research Report
  • [Publications] H. Fukuda: "The Effect of Self-gravity of Gas on Gas Fueling in Barred Galaxies with a Supermassive Black Hole"The Astrophysical Journal. (in press). (1999)

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      1999 Annual Research Report
  • [Publications] T. Okamoto: "Formation and Evolution of Galactic Halos in Clusters of Galaxies"The Astrophysical Journal. 516. 591 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Fukuda: "The effect of a central supermassive black hole on the gas fueling"Monthly Notice of Royal Astronomical Society. 295. 463-474 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] A. Nishikawa: "Cooling Flows Induced by Compton Cooling due to Luminous Quasars in Clusters of Galaxie"Monthly Notice of Royal Astronomical Society. 295. 632-640 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Saga: "Evolution of X-ray Clusters of Galaxies with Active Protogalaxies"IAU symp. No. 188 Hot Universe, ed by K.Koyama et al., Kluwer Acd. Press. 321-322 (1998)

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      1999 Annual Research Report
  • [Publications] A. Habe: "Cluster of Galaxies in a Flat CHDM universe"IAU symp. No. 188 Hot Universe, ed by K.Koyama et al., Kluwer Acd. Press. 299-300 (1998)

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      1999 Annual Research Report
  • [Publications] T. Nakano: "Star Formation in Magnetic Clouds"The Astrophysical Journal. 494. 587-604 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Nakano: "Star Formation: Can There Be a Break in the IMF near 0.1M?"Highlights of Astronomy. 11A. 425-426 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] J.-I. Morino: "Reflected Infrared Spectrum of a Massive Protostar in Orion"Nature. 393. 340-342 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] M. Momose: "Aperture Synthesis C ^<18> O (J = 1-0) Observations of L1551-IRS 5: Detailed Structure of the Infalling Envelope"The Astrophysical Journal. 504. 314-333 (1998)

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      1999 Annual Research Report
  • [Publications] Y. Aikawa: "Evolution of Molecular Abundances in Protoplanetary Disks with Accretion Flow"The Astrophysical Journal. 519. 705-725 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Nakano: "Star Formation in Magnetic Clouds: A Challenge to the Standard Model"Proceedings of the 3rd Cologne-Zermatt Symposium, eds. by V. Ossenkopf, et al. (GCA-Verlag, Herdecke). 257-260 (1999)

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      1999 Annual Research Report
  • [Publications] T. Nakano: "Star Formation in Magnetic Clouds"Star Formation 1999, Proceedings of the International Conference, ed. T. Nakamoto (Nobeyama Radio Observatory). 123-128 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Nakano: "Evolution of Protostars Accreting Mass at Very High Rates: Is Orion IRc2 a Huge Protostar?"The Astrophysical Journal. 534(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Hanawa: "Stability of a Dynamically Collapsing Gas Sphere"Publication Astronomical Society of Japan. 52(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] N. Fukuda: "Sequential Star Formation Triggered by Expansion of an H II Region"The Astrophysical Journal. 533(in press). (2000)

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      1999 Annual Research Report
  • [Publications] K. Saigo: "Collapse of Rotating Gas Cloud and Formation of Protostellar Disk: Effects of Temperature Change During Collapse"The Astrophysical Journal. 531(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Hanawa: "Growth of a Bar Perturbation during Isothermal Collapse"The Astrophysical Journal. 521. 703-707 (1999)

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      1999 Annual Research Report
  • [Publications] T. Matsumoto: "Bar and Disk Formation in Gravitationally Collapsing Clouds: Implications for Binary Formation"The Astrophysical Journal. 521. 659-670 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] N. Fukuda: "Gravitational and Parametric Instabilities in the Alfven Wave Traveling Interstellar Medium"The Astrophysical Journal. 517. 226-241 (1999)

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      1999 Annual Research Report
  • [Publications] K. Nobuta: "Jets from Time-Dependent Accretion Flows onto a Black Hole"The Astrophysical Journal. 510. 614-630 (1999)

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      1999 Annual Research Report
  • [Publications] F. Nakamura: "Collapse of Isothermal Magnetized Clouds: Universality of Self-similar Collapse"The Astrophysical Journal. 510. 274-290 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Kawachi: "Gravitational Collapse of Filamentary Clouds"Publiction Astronomical Society of Japan. 50. 577-586 (1998)

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      1999 Annual Research Report
  • [Publications] Y. Nakajima: "Clustering of PreMain-Sequence Stars in the Orion, Ophiuchus, Chamaeleon, Vela, and Lupus Star-forming Regions"The Astrophysical Journal. 497. 721-735 (1998)

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      1999 Annual Research Report
  • [Publications] K. Tomisaka: "The Evolution of the Angular Momentum Distribution during Star Formation"The Astrophysical Journal Letter. 528. L41-L44 (2000)

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      1999 Annual Research Report
  • [Publications] S. Ogino: "Gravitational Collapse of Spherical Isothermal Clouds"Publication Astronomical Society of Japan. 51. 637-651 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Tomisaka: "Collapse-Driven Outflow in Star-Forming Molecular Cores"Star Formation 1999, Proceedings of the International Conference, ed. T. Nakamoto (Nobeyama Radio Observatory). 197-198 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Tomisaka: "Gravitational Contraction of Magnetized Clouds"Proceedings of Numerical Astrophysics 1998 (NAP98), ed. by S.M. Miyama, K. Tomisaka & T. Hanawa, Kluwer Academic. 141-150 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] F. Nakamura: "Collapse of Isothermal Magnetized Clouds: Universality of Self-similar Collapse"The Astrophysical Journal. 510. 274-290 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Tomisaka: "Collapse-Driven Outflow in Star-Forming Molecular Cores"The Astrophysical Journal. 502. 163-167 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Tomisaka: "Superbubbles in Magnetized Interstellar Media: Blowout or Confinement?"Monthly Notice of Royal Astronomical Society. 298. 797-810 (1998)

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      1999 Annual Research Report
  • [Publications] M. Machida: "Global Simulations of Differentially Rotating Magnetized Disks: Formation of Low-βFilaments and Structured Coronae"The Astrophysical Journal Letter. 532. 67-70 (2000)

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      1999 Annual Research Report
  • [Publications] T. Kawaguchi: "Temporal 1/f^α Fluctuations from Fractal Magnetic Fields in Black-Hole Accretion Flow"Publication Astronomical Society of Japan. 52. L1-L4 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] W. Chou: "Magnetotelluric Modelings using a Parallel Computational Scheme (I) Code Development and Preliminary Results"Computer Physics Communications. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] W. Chuo: "Dynamics of the Parker-Jeans Instability in a Galactic Gaseous Disk"The Astrophysical Journal. 537(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] M. Umekawa: "Self-Gravitational Instability of an Isothermal Gaseous Slab under High External Pressure"Publication Astronomical Society of Japan. 51. 625-636 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] S. Tanuma: "Magnetic Reconnection as the Origin of Galactic-Ridge X-Ray Emission"Publiction Astronomical Society of Japan. 51. 161-172 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] W. Chuo: "Dynamics of Local Isolated Magnetic Flux Tubes in a Rapidly Rotating Stellar Atmosphere"Publication Astronomical Society of Japan. 51. 103-113 (1999)

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      1999 Annual Research Report
  • [Publications] T. Kudoh: "Numerical MHD Simulation of Astrophysical Problems by using CIP-MOCCT Method"Computational Fluid Dynamics Journal. 8. 56-68 (1999)

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      1999 Annual Research Report
  • [Publications] T. Kudoh: "Magnetically Driven Jets from Accretion Disks. III. 2,5-dimensional Nonsteady Simulations for Thick Disk Case"The Astrophysical Journal. 508. 186-199 (1998)

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      1999 Annual Research Report
  • [Publications] R. Matsumoto: "Computational Magnetohydrodynamics of Turbulence, Dynamos, and Jet Formation in Differentially Rotating Astrophysical Disks"Progress of Theoretical Physics Supplement. (in press). (2000)

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      1999 Annual Research Report
  • [Publications] T. Ogawa: "Hydrodynamical Simulations using a Fully Threaded Tree"Progress of Theoretical Physics Supplement. (in press). (2000)

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      1999 Annual Research Report
  • [Publications] R. Matsumoto: "Formation of Localized Strongly Magnetized Regions in Galaxies and Clusters of Galaxies"Advances in Space Research. 25. 499-504 (2000)

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      1999 Annual Research Report
  • [Publications] Y. Kato: "Flares and Outflows around a Weakly Magnetized Neutron Star"Astronomische Naturichten. 320. 367-367 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] R. Matsumoto: "Global Three-Dimensional MHD Simulations of Accretion Disks and Jet Formation in AGNs"Advances in Space Research. 23. 1109-1113 (1999)

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      1999 Annual Research Report
  • [Publications] T. Kudoh: "Magnetically Driven Jets from Accretion Disks: The Effect of Magneto-rotational Instability"Advances in Space Reaearch. 23. 1101-1104 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Kuwabara: "Magnetohydrodynamic Simulations of Magnetically Driven Mass Accretion in Active Galactic Nuclei"Advances in Space Research. 23. 1105-1108 (1999)

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      1999 Annual Research Report
  • [Publications] R. Matsumoto: "Jets from Magnetized Accretion Disks"Geophysical Monograph. 111. 293-300 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] S.M. Miyama: "NUMERICAL ASTROPHYSICS"Kluwer Academic Publishers. 438 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Nakamoto: "Star Formation 1999"Nobeyama Radio Observatory. (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Masunaga,H.: "A Radiative Hydrodynamical Model For Protostellar Collapse I The First Collapse" The Astrophysical Journal. 495. 346-369 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sano,T.: "A Saturation Mechanism of Magnetorotational Instability Due to Ohmic Dissipation" The Astrophysical Journal. 506. L57-L60 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Aikawa: "Evolution of Molecular Abundances in Protoplanetary Disks with Accretion Flow" The Astrophysical Journal Letter. 印刷中. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Nagai T.: "An Origin of Filamentary Structure in Molecular Clouds" The Astrophysical Journal. 506. 306-322 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Takeuchi: "Wave Excitation in Isothermal Disks by External Gravity" Publication Astronomical Society of Japan. 398. 141-148 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sano,T.: "Magnetorotational Instability in Protoplanetary Disks.I.On the Global Stability of Weakly Magnetized Disks with Ohmic Dissipation" The Astrophysical Journal. (印刷中). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Miyama,S.M.: "NUMERICAL ASTROPHYSICS" Kluwer Academic Publishers, 438 (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2018-03-28  

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