2CH Detection of a new methylamine (CH3NH2) source: Candidate for future glycine surveys
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Detection of a new methylamine (CH3NH2) source: Candidate for future glycine surveys

机译：检测到新的甲胺（CH3NH2）来源：未来甘氨酸调查的候选者

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摘要

Interstellar glycine (NH2CH2COOH), the simplest amino acid, has long been sought in studying a possible relation between the Universe and origin of life. In the last 40 or so years all surveys of glycine have failed; an alternative strategy would be to search for precursor(s) to glycine. Such studies of precursors would be crucial prior to conducting sensitive surveys with ALMA. Laboratory studies have suggested that CH3NH2 is a possible precursor to glycine. Further theoretical study also suggests that the CH2NH2 radical that can be formed from CH3NH2 through photodissociation can be a good precursor to glycine. Thus, we have looked for CH3NH2 towards several hot core sources using the Nobeyama 45 m radio telescope, and succeeded in finding a new CH3NH2 source, G10.47+0.03, with a fractional abundance of 1.5 ± 1.1 × 10−8; at the time of writing, this source is the most abundant source of CH3NH2 ever known. We found that the observed abundance of CH3NH2 agrees fairly well with the theoretical value predicted by R. T. Garrod (2013, ApJ, 765, 60). The detectability of interstellar glycine is discussed.
机译：星际甘氨酸（NH 2 CH 2 在研究宇宙与生命起源之间的可能联系之初，人们一直在寻求最简单的氨基酸（COOH）。在过去的40多年中，所有对甘氨酸的调查均告失败。一种替代策略是寻找甘氨酸的前体。在与ALMA进行敏感调查之前，此类前体研究至关重要。实验室研究表明，CH 3 NH 2 是甘氨酸的可能前体。进一步的理论研究还表明 2 NH 2 可以由CH形成的自由基 3 NH 2 通过光解离可以成为甘氨酸的良好前体。因此，我们一直在寻找CH 3 NH 2 使用Nobeyama 45 m射电望远镜找到了几个热点资源，并成功找到了新的CH 3 NH 2 源，G10.47 + 0.03，分数丰度为1.5±1.1×10 -8 ;在撰写本文时，此来源是CH的最丰富来源 3 NH 2 曾经知道。我们发现观察到的CH的丰度 3 NH 2 与Garrod（2013，ApJ，765，60）预测的理论值相当吻合。讨论了星际甘氨酸的可检测性。

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