Planetesimal Formation at High Temperatures
高温下的星子形成
基本信息
- 批准号:403077938
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2018
- 资助国家:德国
- 起止时间:2017-12-31 至 2021-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Early phases of planet formation strongly depend of the material properties of the particles present as dust. Especially radial inward drift and high temperatures have a strong influence on the aggregation in the warm, inner parts of protoplanetary disks. First laboratory experiments show that during early phases of planetesimal formation high temperatures indeed can alter the sticking capabilities of dust grains tremendously. This project will study this in a systematic way as the evolution of chondritic as well as model mineral samples from cooler to higher temperatures will be simulated. Protoplanetary analog samples will be produced, heated and their composition will be analyzed by X-ray diffraction, Mössbauer spectroscopy, optical imaging, electronmicroscopical methods and particle size analysis. These samples will be studied cool and warm for static and dynamical sticking properties in tensile strength and collision experiments. Ultimate goal is to develop an idea on the efficiency of local planetesimal formation. Especially, in view of the large number and variation of extrasolar planets within the warm inner parts close to their host stars this is an approach for understanding planet formation that found little consideration so far.
行星形成的早期阶段很大程度上取决于尘埃颗粒的物质特性。特别是径向向内漂移和高温对原行星盘温暖内部的聚集有很大的影响。首先,实验室实验表明,在星子形成的早期阶段,高温确实可以极大地改变尘埃颗粒的粘附能力。该项目将系统地研究这一点,模拟从较冷到较高温度的南极和模型矿物样品的演变。将制作、加热原行星模拟样品,并通过X射线衍射、穆斯堡尔光谱、光学成像、电子显微镜方法和粒度分析对其组成进行分析。这些样品将在拉伸强度和碰撞实验中研究静态和动态粘附性能。最终的目标是发展一种关于局部微行星形成效率的想法。特别是,考虑到太阳系外行星的数量和变化在靠近其主星的温暖内部,这是一种理解行星形成的方法,迄今为止很少有人考虑。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Professor Dr. Heiko Wende其他文献
Professor Dr. Heiko Wende的其他文献
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{{ truncateString('Professor Dr. Heiko Wende', 18)}}的其他基金
Microscopic understanding of particle-matrix interaction in magnetic hybrid materials by elementspecific spectroscopy
通过元素特定光谱对磁性杂化材料中颗粒-基体相互作用的微观理解
- 批准号:
238114366 - 财政年份:2013
- 资助金额:
-- - 项目类别:
Priority Programmes
Novel caloric materials by mastering hysteresis: microscopic understanding by element-specific studies
掌握滞后现象的新型热量材料:通过特定元素研究的微观理解
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227071330 - 财政年份:2012
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-- - 项目类别:
Priority Programmes
Tailoring magnetic properties of spinel nanoparticles by silica coating: Importance of surfaces and interfaces
通过二氧化硅涂层定制尖晶石纳米颗粒的磁性:表面和界面的重要性
- 批准号:
156604961 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Research Grants
Magnetismus in reduzierter Dimension, Molekulare Schalter auf Oberflächen, Fundamentale Aspekte der Röntgenabsorptionsspektroskopie
降维磁性、表面分子开关、X 射线吸收光谱的基本方面
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21828049 - 财政年份:2006
- 资助金额:
-- - 项目类别:
Heisenberg Fellowships
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