太阳系遥感乙烷笼形水合物红外特征
Ethane clathrate hydrate infrared signatures for solar system remote sensing
摘要：
像甲烷和乙烷这样的碳氢化合物存在于许多太阳系物体中，包括彗星、卫星和行星。这些烃与水冰在低温下的相互作用可能导致形成包合化合物，例如笼形水合物（水基主体笼捕获烃客体分子），从而改变其保留、稳定性并因此改变其演变。太阳系表面{\cor笼形水合物}的存在可以通过遥感其光谱特征来确定。在这项研究中，我们测量和分析的乙烷笼形水合物光谱记录的温度范围从5.3至160 K，涵盖了大部分的温度范围内的兴趣为太阳系的对象。特定的红外波段签名被确定为乙烷笼住的客人。我们提供的证据表明，乙烷笼形水合物露头可以通过遥感探测到的行星体的表面。
英文摘要：
Hydrocarbons such as methane and ethane are present in many solar system objects, including comets, moons and planets. The interaction of these hydrocarbons with water ice at low temperatures could lead to the formation of inclusion compounds, such as clathrate hydrates (water based host cages trapping hydrocarbons guest molecules), modifying their retention, stability and therefore evolution. The occurrence of {\cor clathrate hydrates} on solar system surfaces could be established by remote sensing of their spectroscopic signatures. In this study, we measure and analyse ethane clathrate hydrate spectra recorded in the temperature range from 5.3 to 160K, covering most of the temperature range of interest for solar system objects. Specific infrared band signatures are identified for the ethane encaged guest. We provide evidence that ethane clathrate hydrate outcrops can be detected by remote sensing on the surface of planetary bodies.
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