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- W2963925791 abstract "We used the Nobeyama 45 m radio telescope to reveal spatial distributions of CCS and HC{sub 3}N in L1147, one of the carbon-chain producing region (CCPR) candidates, where carbon-chain molecules are dominant rather than NH{sub 3}. We found that three cores (two CCS cores and one HC{sub 3}N core), which are away from a very low luminosity object (a source that may turn into a sub-stellar mass brown dwarf), exist along the NE-SW filament traced by the 850 μm dust continuum. The column densities of CCS are 3-7 × 10{sup 12} cm{sup –2} and those of HC{sub 3}N are 2-6 × 10{sup 12} cm{sup –2}, respectively, much lower than those previously reported toward other CCPRs. We also found that two CCS peaks are displaced from the peaks of HC{sub 3}N. In order to interpret such interleaved distributions, we conducted chemical reaction network simulations and found that slightly different gas densities could lead to large variation of the CCS-to-HC{sub 3}N ratio in the early phase of dark cloud evolution. Such a chemical 'variation' may be seen in other CCPRs. Finally, we were able to confirm that the L1147 filament can be regarded as a CCPR." @default.
- W2963925791 created "2019-07-30" @default.
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- W2963925791 date "2014-05-28" @default.
- W2963925791 modified "2023-09-27" @default.
- W2963925791 title "DISTRIBUTION OF CCS AND HC3N IN L1147, AN EARLY PHASE DARK CLOUD" @default.
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- W2963925791 doi "https://doi.org/10.1088/0004-637x/788/2/108" @default.
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