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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >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：检测新甲胺（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 45m radio telescope, and succeeded in finding a new CH3NH2 source, G10.47+0.03, with a fractional abundance of 1.5 +/- 1.1 x 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：长期以来，已经寻求宇宙与生命起源之间的可能关系，长期以来一直寻求星际甘氨酸（NH2CH2COOH）。在过去的40岁左右，甘氨酸的所有调查都失败了;另一种策略是搜索甘氨酸前体。在用Alma进行敏感调查之前，前体的这种研究将是至关重要的。实验室研究表明CH3NH2是甘氨酸的可能前体。其它理论研究还表明，可以通过光致剂由CH 3 N 2形成的CH 2 NH 2可以是甘氨酸的良好前体。因此，我们已经使用NobeMaMa 45M射频望远镜寻找了几个热核来源的CH3NH2，并成功地找到了新的CH3NH2源G10.47 + 0.03，分数为1.5 +/- 1.1 x 10（-8） ;在撰写本文时，这一来源是最丰富的CH3NH2来源。我们发现，观察到的CH3NH2的丰富与R.T.Garrod（2013，APJ，765,60）预测的理论值相当好。讨论了星际甘氨酸的可检测性。

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