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Carbon-chain molecules in molecular outflows and Lupus I region – New producing region and new forming mechanism

dc.contributor.authorWu Y.
dc.contributor.authorLiu X.
dc.contributor.authorChen X.
dc.contributor.authorLin L.
dc.contributor.authorYuan J.
dc.contributor.authorZhang C.
dc.contributor.authorLiu T.
dc.contributor.authorShen Z.
dc.contributor.authorLi J.
dc.contributor.authorWang J.
dc.contributor.authorQin S.-L.
dc.contributor.authorKim K.-T.
dc.contributor.authorLiu H.
dc.contributor.authorZhu L.
dc.contributor.authorMadones D.
dc.contributor.authorInostroza N.
dc.contributor.authorHenkel C.
dc.contributor.authorZhang T.
dc.contributor.authorLi D.
dc.contributor.authorEsimbek J.
dc.contributor.authorLiu Q.
dc.date.accessioned2020-09-02T22:30:34Z
dc.date.available2020-09-02T22:30:34Z
dc.date.issued2019
dc.identifier10.1093/mnras/stz1498
dc.identifier.issn00358711
dc.identifier.urihttps://hdl.handle.net/20.500.12728/6635
dc.descriptionUsing the new equipment of the Shanghai Tian Ma Radio Telescope, we have searched for carbon-chain molecules (CCMs) towards five outflow sources and six Lupus I starless dust cores, including one region known to be characterized by warm carbon-chain chemistry (WCCC), Lupus I-1 (IRAS 15398-3359), and one TMC-1 like cloud, Lupus I-6 (Lupus-1A). Lines of HC3N J = 2 − 1, HC5N J = 6 − 5, HC7N J = 14 − 13, 15 − 14, 16 − 15, and C3S J = 3 − 2 were detected in all the targets except in the outflow source L1660 and the starless dust core Lupus I-3/4. The column densities of nitrogen-bearing species range from 1012 to 1014 cm−2 and those of C3S are about 1012 cm−2. Two outflow sources, I20582+7724 and L1221, could be identified as new carbon-chain-producing regions. Four of the Lupus I dust cores are newly identified as early quiescent and dark carbon-chain-producing regions similar to Lup I-6, which together with the WCCC source, Lup I-1, indicate that carbon-chain-producing regions are popular in Lupus I which can be regard as a Taurus-like molecular cloud complex in our Galaxy. The column densities of C3S are larger than those of HC7N in the three outflow sources I20582, L1221, and L1251A. Shocked carbon-chain chemistry is proposed to explain the abnormal high abundances of C3S compared with those of nitrogen-bearing CCMs. Gas-grain chemical models support the idea that shocks can fuel the environment of those sources with enough S+ thus driving the generation of S-bearing CCMs. © 2019 The Author(s).
dc.language.isoen
dc.publisherOxford University Press
dc.subjectISM: abundance
dc.subjectISM: jets and outflows
dc.subjectISM: kinematics and dynamics
dc.subjectISM: molecules
dc.subjectStars: formation
dc.titleCarbon-chain molecules in molecular outflows and Lupus I region – New producing region and new forming mechanism
dc.typeArticle


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