The Streaming Instability, Photophoresis and Planetesimal Formation at the Inner Edge of Protoplanetary Disks

原行星盘内缘的流动不稳定性、光泳和星子形成

基本信息

项目摘要

State of the art scenarios of planet and planetesimal formation are based on the evolution of small particles in dense disks of gas and dust. The particles evolve in size and are supposed to be concentrated in pressure bumps or instabilities only to collapse by gravity, eventually. However, even though these processes are considered as being most fundamental, the concentration and instabilities have never been verified experimentally. Therefore, for the first time, the formation of over dense clouds of particles in a gaseous environment under the influence of stellar radiation and the formation of streaming instabilities will be simulated in a combination of laboratory experiments and numerical simulations. This scenario is focused on the pre-planetary evolution at the inner edge of protoplanetary disks. In the laboratory experiments particle clouds in a thin gas environment will be generated. The size evolution as well as the density distribution of the cloud in forming streaming instabilities will be determined. The same experiment will be carried out numerically. Based on the results the evolution of dust at the inner edge of protoplanetary disks up to planetesimals will be simulated. This way, combining both, experiment and theory, current ideas of planet formation are verified in general and models for the formation of planetesimals at the edges of protoplanetary disks are developed more specifically, for which no predictions exist so far.
行星和微行星形成的最新情况是基于致密气体和尘埃盘中小颗粒的演化。这些粒子的大小会发生变化,并且应该集中在压力隆起或不稳定的地方,最终只会在重力作用下坍塌。然而,即使这些过程被认为是最基本的,浓度和不稳定性从来没有得到实验验证。因此,首次将实验室实验和数值模拟相结合,模拟在恒星辐射影响下气体环境中过密粒子云的形成和流动不稳定性的形成。这一方案的重点是在原行星盘的内部边缘的行星前演化。在实验室实验中,将在稀薄气体环境中产生粒子云。将确定形成流动不稳定性的云的尺寸演变以及密度分布。同样的实验将在数值上进行。在此基础上,模拟了原行星盘内缘尘埃到星子的演化过程。通过这种方式,结合实验和理论,目前行星形成的想法得到了普遍的验证,并且更具体地开发了在原行星盘边缘形成星子的模型,迄今为止还没有预测。

项目成果

期刊论文数量(8)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Turbulence Sets the Length Scale for Planetesimal Formation: Local 2D Simulations of Streaming Instability and Planetesimal Formation
湍流设定了小行星形成的长度尺度:流动不稳定性和小行星形成的局部二维模拟
  • DOI:
    10.3847/1538-4357/abac58
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0
  • 作者:
    H. Klahr;A. Schreiber
  • 通讯作者:
    A. Schreiber
Laboratory Experiments on the Motion of Dense Dust Clouds in Protoplanetary Disks
原行星盘中稠密尘埃云运动的实验室实验
Planetesimals in rarefied gas: wind erosion in slip flow
稀薄气体中的星子:滑流中的风蚀
Experimental study of clusters in dense granular gas and implications for the particle stopping time in protoplanetary disks
致密颗粒气体中团簇的实验研究及其对原行星盘中粒子停止时间的影响
  • DOI:
    10.1016/j.icarus.2021.114307
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
    N. Schneider;G. Musiolik;J. E. Kollmer;T. Steinpilz;M. Kruss;F. Jungmann;T. Demirci;J. Teiser;G. Wurm
  • 通讯作者:
    G. Wurm
Dense Particle Clouds in Laboratory Experiments in Context of Drafting and Streaming Instability
牵伸和流动不稳定背景下实验室实验中的密集粒子云
  • DOI:
    10.3847/1538-4357/aafd35
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    N. Schneider;G. Wurm;J. Teiser;H. Klahr;V. Carpenter
  • 通讯作者:
    V. Carpenter
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Professor Dr. H. Hubertus Klahr其他文献

Professor Dr. H. Hubertus Klahr的其他文献

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{{ truncateString('Professor Dr. H. Hubertus Klahr', 18)}}的其他基金

The implementation of consistent planetesimal formation in the population synthesis of Exo-Planets
在系外行星的族群合成中实施一致的星子形成
  • 批准号:
    362567360
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Identifying the origin of Earth's building material: Where do the earth building Planetesimals and Pebbles originate from? A numerical approach of the accretion phase of the earth.
确定地球建筑材料的起源:地球建筑的星子和卵石来自哪里?
  • 批准号:
    276989061
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Observability of giant planets during the final stage of their formation
巨行星形成最后阶段的可观测性
  • 批准号:
    191707420
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Gravoturbulent Planetesimal Formation in the Early Solar System
早期太阳系中的重力湍流小行星形成
  • 批准号:
    146496795
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Investigating the Influence of the Magnetostrophic Magnetorotational Instability on the Dynamo Action in Planetary Interiors and their Exterior Field
研究磁养磁转不稳定性对行星内部及其外部场发电机作用的影响
  • 批准号:
    169835518
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Dust Processing during the Gravitational Collapse of Particle Heaps
颗粒堆重力塌陷过程中的粉尘处理
  • 批准号:
    158706757
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Research Units
Planetesimal precursors in turbulent protoplanetary disks
湍流原行星盘中的星子前身
  • 批准号:
    35102328
  • 财政年份:
    2006
  • 资助金额:
    --
  • 项目类别:
    Research Units

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