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Title:
An unbiased spectral line survey observation toward the low-mass star-forming region L1527
Authors:
Yoshida, Kento; Sakai, Nami; Nishimura, Yuri; Tokudome, Tomoya; Watanabe, Yoshimasa; Sakai, Takeshi; Takano, Shuro; Yamamoto, Satoshi
Affiliation:
AA(Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Star and Planet Formation Laboratory, RIKEN Cluster for Pioneering Research (CPR), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan), AB(Star and Planet Formation Laboratory, RIKEN Cluster for Pioneering Research (CPR), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan), AC(Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Institute of Astronomy, The University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan; Chile Observatory, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan), AD(Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan), AE(Division of Physics, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan; Tomonaga Center for the History of the Universe, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan), AF(Department of Communication Engineering and Informatics, Graduate School of Informatics and Engineering, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan), AG(Department of Physics, General Studies, College of Engineering, Nihon University, 1, Nakagawara, Tokusada, Tamuramachi, Koriyama, Fukushima 963-8642, Japan), AH(Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Research Center for the Early Universe, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan)
Publication:
Publications of the Astronomical Society of Japan, Advance Access (OUP Homepage)
Publication Date:
01/2019
Origin:
OUP
Astronomy Keywords:
astrochemistry, ISM: individual objects (LDN 1527), ISM: molecules
Abstract Copyright:
The Author(s) 2019. Published by Oxford University Press on behalf of the Astronomical Society of Japan.
DOI:
10.1093/pasj/psy136
Bibliographic Code:
2019PASJ..tmp....1Y

Abstract

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.
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