论文标题
彗星科学与立方体
Cometary science with CUBES
论文作者
论文摘要
ESO非常大的望远镜的拟议的光谱仪将是研究彗星的极强工具。彗星的气体昏迷在近紫外线范围内包含大量的发射特征（305-400 nm），它们是ICE核中核和昏迷中的化学反应的诊断。不同物种之间的生产率和相对比率显示出了多少冰，并为早期太阳系中的条件模型提供了信息。特别是，立方体将导致从非常微弱的彗星中检测水的进步，揭示在主要的小行星带中可能隐藏了多少冰，并在比目前范围更大的彗星中测量同位素和分子组成比，这比目前可能更宽。立方体还将对来自气态金属（例如FEI和NII）的排放敏感，最近在彗星中鉴定出来，并提供了一个全新的调查领域，以了解这些神秘的对象。
The proposed CUBES spectrograph for ESO's Very Large Telescope will be an exceptionally powerful instrument for the study of comets. The gas coma of a comet contains a large number of emission features in the near-UV range covered by CUBES (305-400 nm), which are diagnostic of the composition of the ices in its nucleus and the chemistry in the coma. Production rates and relative ratios between different species reveal how much ice is present and inform models of the conditions in the early solar system. In particular, CUBES will lead to advances in detection of water from very faint comets, revealing how much ice may be hidden in the main asteroid belt, and in measuring isotopic and molecular composition ratios in a much wider range of comets than currently possible, provide constraints on their formation temperatures. CUBES will also be sensitive to emissions from gaseous metals (e.g., FeI and NiI), which have recently been identified in comets and offer an entirely new area of investigation to understand these enigmatic objects.
