尘埃粒子的分布

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Shen讨论 | 贡献2015年3月20日 (五) 04:22的版本
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*MRN model(Mathis, Rumpl & Nordsiek 1977) ,describes the size distribution of dust grains in the MilkWay

解析失败 (语法错误): {\displaystyle N(a)\propto a^{−3.5}}

  • grains larger than ∼ 0.2μm are too heavy and remain trapped in the gravitational field of the host galaxy.
  • Smaller grains (a<0.05μm) are either destroyed by sputtering or unable to travel far from formation sites as they are inefficiently pushed away by radiation pressure;