Orion中乙硫醇的光谱表征及检测
Spectroscopic characterization and detection of Ethyl Mercaptan in Orion
摘要：
在毫米波和亚毫米波域（高达880 GHz）中，新的实验室数据提供了非常精确的光谱常数值，允许检测到$gauche$ -CH $_{3}$ CH $_2$ SH朝向猎户座KL。在80-280 GHz范围内，77条未混合或轻微混合的线路加上没有丢失的过渡支持这一识别。在猎户座KL的光谱测量中，也报告了甲基硫的检测，CH $_{3}$ SH。我们的柱密度结果表明，在猎户座KL的热核中，甲基顺丁烯二酸的丰度是乙基顺丁烯二酸的$\simeq$ 5倍。
英文摘要：
New laboratory data of ethyl mercaptan, CH$_{3}$CH$_{2}$SH, in the millimeter and submillimeter-wave domains (up to 880 GHz) provided very precise values of the spectroscopic constants that allowed the detection of $gauche$-CH$_3$CH$_2$SH towards Orion KL. 77 unblended or slightly blended lines plus no missing transitions in the range 80-280 GHz support this identification. A detection of methyl mercaptan, CH$_{3}$SH, in the spectral survey of Orion KL is reported as well. Our column density results indicate that methyl mercaptan is $\simeq$ 5 times more abundant than ethyl mercaptan in the hot core of Orion KL.
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