在绿岸望远镜PRIMOS巡天中对人马座B2（N）的E-氰甲亚胺的探测
Detection of E-cyanomethanimine towards Sagittarius B2(N) in the Green Bank Telescope PRIMOS Survey
摘要：
对人马座B2（N）的E-氰基甲亚胺（E-HNCHCN）的检测是通过比较公开可用的绿岸望远镜（GBT）PRIMOS巡天光谱（Hollis等人）进行的。反应产物筛选实验的实验室旋转光谱。该实验使用宽带分子旋转光谱来监测使用NH3和CH3CN的气体混合物的放电源中产生的反应产物。几个过渡频率之间的重合反应产物屏蔽光谱和以前未分配的星际旋转跃迁的PRIMOS调查已被分配给E cyanomethanimine。在9~50 GHz范围内共观察到8个分子转动跃迁。E-氰基甲亚胺，通常称为HCN二聚体，是益生元化学中的重要分子，因为它是腺嘌呤合成路线中的化学中间体，腺嘌呤是DNA和RNA中发现的两种嘌呤核碱基之一。新的旋转光谱的E-cyanomethanimine和Z-cyanomethanimine，将以前的毫米波测量的分析也有报道。
英文摘要：
The detection E-cyanomethanimine (E-HNCHCN) towards Sagittarius B2(N) is made by comparing the publicly available Green Bank Telescope (GBT) PRIMOS survey spectra (Hollis et al.) to laboratory rotational spectra from a reaction product screening experiment. The experiment uses broadband molecular rotational spectroscopy to monitor the reaction products produced in an electric discharge source using a gas mixture of NH3 and CH3CN. Several transition frequency coincidences between the reaction product screening spectra and previously unassigned interstellar rotational transitions in the PRIMOS survey have been assigned to E cyanomethanimine. A total of 8 molecular rotational transitions of this molecule between 9 and 50 GHz are observed with the GBT. E-cyanomethanimine, often called the HCN dimer, is an important molecule in prebiotic chemistry because it is a chemical intermediate in proposed synthetic routes of adenine, one of the two purine nucleobases found in DNA and RNA. New analyses of the rotational spectra of both E-cyanomethanimine and Z-cyanomethanimine that incorporate previous mm-wave measurements are also reported.
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