An unbiased spectral line survey observation toward the low-mass star-forming region L1527
An unbiased spectral line survey observation toward the low-mass star-forming region L1527
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DOI：
10.1093/pasj/psy136
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发表时间：
2019-01
影响因子：
2.3
通讯作者：
Kento Yoshida;N. Sakai;Y. Nishimura;Tomoya Tokudome;Yoshimasa Watanabe;T. Sakai;S. Takano;S. Yamamoto
中科院分区：
文献类型：
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作者：
Kento Yoshida;N. Sakai;Y. Nishimura;Tomoya Tokudome;Yoshimasa Watanabe;T. Sakai;S. Takano;S. Yamamoto
用Nobeyama 45 m望远镜在3 mm波段对L1527中的一颗太阳型0/I类原恒星IRAS 04368+2557进行了无偏谱线测量。L1527被称为暖碳链化学源（WCCC），在原恒星附近的温暖致密区域中含有丰富的不饱和有机物种，如CnH（n = 3，4，5，.）。观测范围为80 ~ 116 GHz。还在70 GHz波段进行了补充观测，以观察氘代物质的基本跃迁。总共鉴定了69种分子种类，其中27种是碳链种类及其异构体，包括其次要同位素体。这一谱线测量为我们提供了一个很好的WCCC源的化学成分的模板。
An unbiased spectral line survey toward a solar-type Class 0/I protostar, IRAS 04368+2557, in L1527 has been carried out in the 3 mm band with the Nobeyama 45 m telescope. L1527 is known as a warm carbon-chain chemistry (WCCC) source, which harbors abundant unsaturated organic species such as CnH (n = 3, 4, 5, …) in a warm and dense region near the protostar. The observation covers the frequency range from 80 to 116 GHz. A supplementary observation has also been conducted in the 70 GHz band to observe fundamental transitions of deuterated species. In total, 69 molecular species are identified, among which 27 species are carbon-chain species and their isomers, including their minor isotopologues. This spectral line survey provides us with a good template of the chemical composition of the WCCC source.