The 3 mm spectral line survey toward the lynds 1157B1 shocked region. I. Data

Takahiro Yamaguchi, Shuro Takano, Yoshimasa Watanabe, Nami Sakai, Takeshi Sakai, Sheng Yuan Liu, Yu Nung Su, Naomi Hirano, Shigehisa Takakuwa, Yuri Aikawa, Hideko Nomura, Satoshi Yamamoto

Research output: Contribution to journalReview articlepeer-review

27 Citations (Scopus)


We have conducted a spectral line survey of the 3 mm band with the 45 m telescope of Nobeyama Radio Observatory toward the L 1157 B1 shocked region, where the blue-shifted component of the bipolar outflow from the protostar IRAS 20386+6751 interacts with the ambient gas. The observed frequency ranges from 78.1 to 115.8 GHz. We have detected 129 spectral lines of 29 molecular species. In addition to various oxygen-bearing organic molecules such as CH 3CHO, HCOOCH3, and HCOOH, we have detected a phosphorus-containing molecule PN, a nitrogen-bearing organic molecule NH 2CHO, and a carbon-chain molecule CCS in the shocked region. These results clearly indicate that the L 1157 B1 shocked region is chemically rich, which is probably triggered by evaporation of grain mantles.

Original languageEnglish
JournalPublications of the Astronomical Society of Japan
Issue number5
Publication statusPublished - 2012 Oct 25
Externally publishedYes


  • ISM: individual (lynds 1157)
  • ISM: molecules

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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