JpGU-AGU Joint Meeting 2017

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[JJ] Oral

P (Space and Planetary Sciences) » P-PS Planetary Sciences

[P-PS09] [JJ] Origin and evolution of materials in space

Mon. May 22, 2017 3:30 PM - 5:00 PM 104 (International Conference Hall 1F)

convener:Shogo Tachibana(Department of Natural History Scieces, Hokkaido University), Hitoshi Miura(Graduate School of Natural Sciences, Department of Information and Basic Science, Nagoya City University), Takafumi Ootsubo(Graduate School of Arts and Sciences, University of Tokyo), Hideko Nomura(Department of Earth and Planetary Sciences, Tokyo Institute of Technology), Chairperson:Takafumi Ootsubo ( Graduate School of Arts and Sciences, University of Tokyo ), Chairperson:Hitoshi Miura(Graduate School of Natural Sciences, Department of Information and Basic Science, Nagoya City University)

3:45 PM - 4:00 PM

[PPS09-07] Detections of Long Carbon Chains CH3CCCCH, C6H, linear-C6H2 and C7H in the Low-Mass Star Forming Region L1527

*Mitsunori Araki1, Shuro Takano2, Nami Sakai3, Satoshi Yamamoto4, Takahiro Oyama1, Nobuhiko Kuze5, Koichi Tsukiyama1 (1.Department of Chemistry, Faculty of Science Division I, Tokyo University of Science, 2.Nihon University, 3.RIKEN, 4.The university of Tokyo, 5.Sophia University)

Keywords:carbon chain, radio, molecular cloud

A richness of long carbon chains in the warm carbon chain chemistry (WCCC) region has been searched in the 42-44 GHz region by using Green Bank 100 m telescope. Long carbon chains C7H, C6H, CH3C4H, and linear-C6H2 and cyclic species C3H and C3H2O have been detected in the low-mass star forming region L1527, performing the WCCC. The detection of C7H is for the first time in molecular clouds. While the abundance ratios of carbon chains in between L1527 and the starless dark cloud Taurus Molecular Cloud-1 Cyanopolyyne Peak (TMC-1 CP) have a trend of decrease by extension of carbon-chain length, column densities of CH3C4H and C6H are on the trend. However, the column densities of linear-C6H2, and C7H are as abundant as those of TMC-1 CP in spite of long carbon chain, i.e., they are not on the trend. The abundances of linear-C6H2 and C7H show that L1527 is rich for long carbon chains as well as TMC-1 CP.