UvA-DARE ( Digital Academic Repository ) Detection of abundant solid methanol toward young low mass stars
UvA-DARE ( Digital Academic Repository ) Detection of abundant solid methanol toward young low mass stars
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UvA-DARE（数字学术知识库）检测年轻低质量恒星的丰富固体甲醇
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发表时间：
2003
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通讯作者：
L. D'hendecourt
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作者：
K. Pontoppidan;E. Dartois;E. V. Dishoeck;W. Thi;L. D'hendecourt
我们探测到了固体甲醇对位于蛇和变色龙分子云复合体中的三个小质量年轻恒星的3.53μm的吸收带。这些源是对≈40原恒星进行的大型光谱调查的一部分。这是首次在低质量(M<；∼1 M)年轻恒星附近探测到固体甲醇，表明甲醇的形成不依赖于大质量年轻恒星的邻近。与水冰相比，这三个来源的固体甲醇的丰度在15%-25%之间，这与已知的最富甲醇的大量来源的情况相当。一些低质量年轻恒星的星周环境中存在大量的甲醇，这对年轻太阳型恒星附近甲醇和更复杂的有机物种的形成具有重要的影响。
We present detections of the absorption band at 3.53 μm due to solid methanol toward three low-mass young stellar objects located in the Serpens and Chameleon molecular cloud complexes. The sources were observed as part of a large spectroscopic survey of ≈40 protostars. This is the first detection of solid methanol in the vicinity of low mass (M <∼ 1 M ) young stars and shows that the formation of methanol does not depend on the proximity of massive young stars. The abundances of solid methanol compared to water ice for the three sources are in the range 15–25% which is comparable to those for the most methanol-rich massive sources known. The presence of abundant methanol in the circumstellar environment of some low mass young stars has important consequences for the formation scenarios of methanol and more complex organic species near young solar-type stars.