论文标题
在寒冷的天体物理环境中的冰粒冰覆盖
Ice coverage of dust grains in cold astrophysical environments
论文作者
论文摘要
寒冷天体物理环境中宇宙固体上的表面过程导致气相消耗和分子复杂性。大多数天体物理模型都假定分子冰形成厚的多层底物，不与尘埃表面相互作用。相反，我们提出了实验结果，证明了表面对多孔晶粒的重要性。我们表明，宇宙粉尘颗粒可能仅被一些冰的单层覆盖。这意味着必须重新评估尘埃表面结构，组成和反应性在描述冷星际，原始环境中表面过程的模型中的作用。
Surface processes on cosmic solids in cold astrophysical environments lead to gas phase depletion and molecular complexity. Most astrophysical models assume that the molecular ice forms a thick multilayer substrate, not interacting with the dust surface. In contrast, we present experimental results demonstrating the importance of the surface for porous grains. We show that cosmic dust grains may be covered by a few monolayers of ice only. This implies that the role of dust surface structure, composition, and reactivity in models describing surface processes in cold interstellar, protostellar, and protoplanetary environments has to be reevaluated.
