CH2D +，寻找圣杯
CH2D+, the Search for the Holy Grail
摘要：
CH 2D+，CH 3+的单氘代对应物，提供了一种替代的方式来介导在几十K的温度下形成的氘代物质，与从晶粒中释放氘代物质相比。我们报告了一个长期的观测搜索这种分子离子，其旋转光谱尚未完全安全。我们总结了该分子的主要光谱性质，并讨论了导致CH 2D+形成的化学网络，明确了H2，H3+和CH 3+的邻/对位形式。天体化学模型支持这种分子离子在适度温暖的环境中以边缘水平存在。
英文摘要：
CH2D+, the singly deuterated counterpart of CH3+, offers an alternative way to mediate formation of deuterated species at temperatures of several tens of K, as compared to the release of deuterated species from grains. We report a longstanding observational search for this molecular ion, whose rotational spectroscopy is not yet completely secure. We summarize the main spectroscopic properties of this molecule and discuss the chemical network leading to the formation of CH2D+, with explicit account of the ortho/para forms of H2, H3+ and CH3+. Astrochemical models support the presence of this molecular ion in moderately warm environments at a marginal level.
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