Properties of Interstellar Dust Grains

星际尘埃颗粒的特性

基本信息

项目摘要

The main goal of the project is to identify grains of interstellar origin in the data set collected by the Cassini dust detector, which is capable to measure the dynamic properties and the composition of the impacting particles. The analysis of their mass spectra provides for the first time unequivocal information about the composition of solid material at the earliest phases of planet formation as well as about the production rates of galactic dust in carbon-rich stars, red giants, and supernovae. The current knowledge of the composition of interstellar dust (ISD) stemming dominantly from astronomical observations is extremely limited. The Stardust spaceprobe may have collected a few interstellar grains, but so far the examination team has not yet identified such grains within the aerogel samples. The dust instrument onboard the Cassini spaceprobe provides an unique opportunity to obtain in-situ ISD data because shortly after Cassini’s entry into its orbit around Saturn, the ISD observation conditions became favourable. Furthermore, ISD particles can be reliably identified in the Cassini data set because their kinematic and compositional properties are distinct from grains forming Saturn’s rings as well as from interplanetary grains.
该项目的主要目标是在卡西尼尘埃探测器收集的数据集中识别星际起源的颗粒,卡西尼尘埃探测器能够测量撞击颗粒的动态特性和组成。对它们的质谱的分析第一次提供了关于行星形成早期固体物质组成的明确信息,以及关于富碳恒星、红巨星和超新星中星系尘埃的产生速率。目前关于星际尘埃(ISD)组成的知识主要来自天文观测,这是非常有限的。星尘号太空探测器可能已经收集了一些星际颗粒,但到目前为止,检查小组还没有在气凝胶样本中发现这些颗粒。卡西尼号太空探测器上的尘埃仪器提供了一个独特的机会来获取原位ISD数据,因为在卡西尼号进入环绕土星的轨道后不久,ISD的观测条件变得有利。此外,ISD粒子可以在卡西尼号的数据集中可靠地识别出来,因为它们的运动学和组成特性与形成土星环的颗粒以及行星际颗粒不同。

项目成果

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Professor Dr. Jürgen Blum其他文献

Professor Dr. Jürgen Blum的其他文献

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{{ truncateString('Professor Dr. Jürgen Blum', 18)}}的其他基金

D-A-CH: International Comet Experiments
D-A-CH:国际彗星实验
  • 批准号:
    395699456
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Project P6: Collision properties of solids in debris disks at low to moderate impact velocities
项目 P6:低至中等冲击速度下碎片盘中固体的碰撞特性
  • 批准号:
    278211407
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Units
Growth of dust aggregates in protoplanetary disks beyond the "bouncing barrier"
原行星盘中尘埃聚集体的增长超出了“弹跳屏障”
  • 批准号:
    255668493
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Experimental investigation of the collision and optical properties of (sub)µm-sized ice and ice-coated dust particles
(亚)微米尺寸的冰和冰衣尘埃粒子的碰撞和光学特性的实验研究
  • 批准号:
    203090743
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Physical properties of particle agglomerates with respects to the planet formation process
颗粒团聚体的物理性质与行星形成过程的关系
  • 批准号:
    196513527
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Experimental investigation of the formation of accretionary rims around chondrules and the formation of chondrite parent bodies
球粒周围增生缘形成和球粒陨石母体形成的实验研究
  • 批准号:
    145102209
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Kinematik planetarer Ringe
行星环的运动学
  • 批准号:
    136765306
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Growth Below the Meter-Size Barrier: Collision Experiments in the Bottleneck of Planet Formation
米级障碍以下的生长:行星形成瓶颈的碰撞实验
  • 批准号:
    158620389
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Research Units
Microphysical modeling of comets and planetesimals
彗星和星子的微物理模型
  • 批准号:
    51912759
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Charge transfer in dust-agglomerate collisions and the efficiency of electrostatic secondary agglomeration
粉尘-团聚碰撞中的电荷转移和静电二次团聚效率
  • 批准号:
    35039911
  • 财政年份:
    2006
  • 资助金额:
    --
  • 项目类别:
    Research Units

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Elucidation of the origin of Anomalous Microwave Emission: Pioneering the theory on quantum properties of interstellar amorphous dust
阐明异常微波发射的起源:开创星际非晶尘埃量子特性理论
  • 批准号:
    22KJ0727
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    2023
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An experimental study of photochemistry for phosphine on interstellar silicate dust
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Research Initiation Award: Unraveling the Elemental Abundances and Dust Properties of the Interstellar Medium
研究启动奖:揭示星际介质的元素丰度和尘埃特性
  • 批准号:
    2000036
  • 财政年份:
    2020
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    --
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    Standard Grant
Research of interstellar dust properties and magnetic field structure in star forming regions by 3D interstellar polarization mapping
通过3D星际极化映射研究星际尘埃特性和恒星形成区域的磁场结构
  • 批准号:
    20K04013
  • 财政年份:
    2020
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    --
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    Grant-in-Aid for Scientific Research (C)
In-situ nonlinear Raman spectroscopic observation of nuclear spin conversion process of molecular hydrogen on the surface of interstellar dust
星际尘埃表面氢分子核自旋转换过程的非线性拉曼光谱原位观测
  • 批准号:
    20K22540
  • 财政年份:
    2020
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    Grant-in-Aid for Research Activity Start-up
Interaction between interstellar dust molecules with charged particle and mechanism of molecular evolutions
星际尘埃分子与带电粒子的相互作用及分子演化机制
  • 批准号:
    20K04028
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Dust in the Wind: Dynamics of Dusty Fluids on Interstellar, Stellar, and Planetary Scales
风中的尘埃:星际、恒星和行星尺度上的尘埃流体动力学
  • 批准号:
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Mechanisms for the formation of nucleobases by ion collision reaction on the low-temperature interstellar dust analogs
低温星际尘埃类似物上离子碰撞反应形成核碱基的机制
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Optics of Interstellar Dust: New Methods and Applications
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    1908123
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Exploring Cosmic Magnetic Fields and Interstellar Dust through Polarized Infrared Observations
通过偏振红外观测探索宇宙磁场和星际尘埃
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