New processes that determine the lifetime of dust disks around exoplanets

确定系外行星周围尘盘寿命的新过程

• 批准号: 19540234
• 负责人: YAMAMOTO Tetsuo
• 金额: $ 2.91万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2008
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19540234/
• 关键词: 太陽系外惑星; 原始惑星系円盤; ダスト; 物質進化

惑星系ダスト円盤の寿命やそこでの種々の物理過程を明確にするため, 以下の研究を行った.(1) 残骸円盤におけるダスト集積の理論(2) ダストアグリゲートの衝突シミュレーション(3) 電子線照射によるシリケートダストの結晶化(4) 低温結晶化の実験と理論(5) 結晶シリケート粒子の蒸発実験その結果, 汎用性をもつ, 残骸円盤におけるダスト集積の解析的理論の構築, 従来の常識を破る低温結晶化の機構と宇宙物理学へのその応用, ダスト衝突によるダストの付着成長/破壊の条件の解明と微惑星への成長への含意, 等についての研究を展開した.

The physical process of star system life span and species is clearly defined, and the following research is carried out. (1)Theory of aggregation of debris particles (2) Theory of aggregation of debris particles (3) Theory of crystallization of debris particles under electron irradiation (4) Theory of crystallization at low temperature (5) Theory of evaporation of debris particles (5) Theory of aggregation analysis of debris particles (6) Theory of aggregation analysis of debris particles (7) Theory of aggregation analysis of debris particles (8) Theory of aggregation analysis of debris particles (9) Theory of aggregation analysis of debris particles The mechanism of low temperature crystallization, the application of cosmic physics, the explanation of the conditions of growth and the implications of growth of micro-stars, etc.

项目成果

Exothermic chemical reactions can drive nonthermal crystallization of amorphous silicate grains

放热化学反应可以驱动非晶硅酸盐颗粒的非热结晶

• 发表时间: 2007
• 期刊: Astrophysical Journal 666
• 作者: Kaito;C.;Miyazaki;Y.;Kumamoto;A.& Kimura;Y.
• 通讯作者: Y.

Effect of absorption on light scattering by aggromerated debris particles J. Quantitive Spectroscopy & Radiative Transfer

聚集碎片颗粒吸收对光散射的影响 J. 定量光谱学

• 期刊: (in press)
• 作者: E. Zubko;H. Kimura;Y. Shkuratov;K. Muinonen;T. Yamamoto;H. Okamoto,& G. Videen
• 通讯作者: H. Okamoto,& G. Videen

Physical processes of dust aggregates in protoplanetary disks The 2nd Subaru International Conference

原行星盘中尘埃聚集体的物理过程第二届斯巴鲁国际会议

• 发表时间: 2009
• 作者: Kimura;Y. Sasaki;Y.;Suzuki;H.;Kumamoto;A.;Saito;M.& Kaito;C.;T. Yamamoto
• 通讯作者: T. Yamamoto

Laboratory experiments on the evaporation of amorphous and crystalline grains

非晶态和晶态颗粒蒸发的实验室实验

• 发表时间: 2009
• 作者: Kimura;Y. Sasaki;Y.;Suzuki;H.;Kumamoto;A.;Saito;M.& Kaito;C.;T. Yamamoto;C. Kaito & A. Kumamoto
• 通讯作者: C. Kaito & A. Kumamoto

Numerical Simulation of Dust Aggregate Collisions.II.Compression and Disruption of Three-Dimensional Aggregates in Head-On Collisions

粉尘骨料碰撞的数值模拟二、正面碰撞中三维骨料的压缩与破坏

• 发表时间: 2008
• 期刊: ApJ 667
• 作者: Wada;K.;Tanaka;H.;Suyama;T.;Kimura;H.,& Yamamoto;T.
• 通讯作者: T.