2019
DOI: 10.1093/mnras/stz1498
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Carbon-chain molecules in molecular outflows and Lupus I region – new producing region and new forming mechanism

Abstract: Using 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 HC 3 N J = 2−1, HC 5 N J = 6−5, HC 7 N J = 14−13, 15−14, 16−15 and C 3 S J = 3−2 were detected in all the targets except in the outflow source L1660 and the star… Show more

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Cited by 11 publications
(19 citation statements)
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References 73 publications
(142 reference statements)
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“…The distance is adopted as 300 ± 30 pc derived from the 3-dimensional (3D) dust map based on Gaia (Green et al 2019). It is consistent with the values of 300±50 pc adopted by Kun & Prusti (1993) and 330±30 pc adopted by Balázs et al (2004) and Wu et al (2019a). Based on CO observations, the L1251 cloud was divided into five substructures by Sato et al (1994), and these substructures were designated by letters from A to E (see the top panel of Fig.…”
Section: Our Targeted Sources In the L1251 Regionmentioning
confidence: 58%
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“…The distance is adopted as 300 ± 30 pc derived from the 3-dimensional (3D) dust map based on Gaia (Green et al 2019). It is consistent with the values of 300±50 pc adopted by Kun & Prusti (1993) and 330±30 pc adopted by Balázs et al (2004) and Wu et al (2019a). Based on CO observations, the L1251 cloud was divided into five substructures by Sato et al (1994), and these substructures were designated by letters from A to E (see the top panel of Fig.…”
Section: Our Targeted Sources In the L1251 Regionmentioning
confidence: 58%
“…The main concept of SCCC is that the sulfur ions and atoms released from grain surfaces under the effect of shocks will mix with cold gas components and drive a new generation of carbon chain molecules, especially the sulfur-bearing ones such as C 3 S. The criteria of SCCC include relatively weak N-bearing CCM emissions in contrast to strong C 3 S emissions and signs of developed shock regions. Our model (Wu et al 2019a) forecasts that, in sources where the SCCC mechanism works most efficiently, the abundance of C 3 S (X(C 3 S)) will not only exceed that of HC 7 N (X(HC 7 N)), but also that of HC 5 N (X(HC 5 N)). The observations presented by Wu et al (2019a) show that so far known three SCCC sources (IRAS 20582+7724 (I20582), L1221 and L1251-IRS3) all have N(C 3 S)<N(HC 5 N), while L1251-IRS3 possesses a C 3 S column density closest to but still not exceeding that of HC 5 N.…”
Section: Introductionmentioning
confidence: 95%
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