Abstract book - Prof. Per Jensen, Ph.D. - Bergische Universität ...

Poster session, D16 63Microwave spectra of the linear carbon-chain alcohol HC 4 OHArisa Kunimatsu 1 , Saori Tanabe 1 , Satoshi Ogawa 1 , Nobuhiko Kuze 1 , Aya Nakane 2 ,Toshiaki Okabayashi 2 , Mitsunori Araki 31 Department of Materials and Life Sciences, Faculty of Science and Technology,Sophia University, 7-1, Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan; 2 Department ofChemistry, Faculty of Science, Shizuoka University, 836 Oya, Suruga-ku, Shizuoka,422-8529, Japan; 3 Department of Chemistry, Faculty of Science Division I, TokyoUniversity of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, JapanKunimatsu A.Tanabe S.Ogawa S.Kuze N.Nakane A.Okabayashi T.Araki M.We have observed the microwave spectra of the linear carbon-chain alcohol, 1,3-butadiyn-1-ol (HC 4 OH). 1-3 HC 4 OH was first investigated using a Stark-modulatedmicrowave spectrometer and subsequently using a Fourier-transform microwavespectrometer (FTMW) to obtain the precise frequencies for the astronomical detection.On the basis of the FTMW result, Radio-astronomical search for HC 4 OH was carriedout in the star forming region L1527 in Taurus. 4For the FTMW observation, we employed a spectroscopic apparatus with Fabry-Perotcavity at Shizuoka University and confirmed the spectral lines which were formerlyobserved by a Stark-modulated microwave spectrometer. In addition, more intense lineswere found in all J-regions and assigned to previously-missing K a =0 transitions. Finallywe assigned 50 and 17 lines in Stark-modulated- and FT-microwave spectra,respectively. Rotational constants of HC 4 OH in the ground and several excitedvibrational states were determined by the least-squares fitting with a Watson’s A-reduced Hamiltonian to their transition frequencies.References[1] M.Araki, N.Kuze, ApJ, 680, L93, 2008[2] M.Araki, N.Kuze, The 20 th International conference on High Resolution MolecularSpectroscopy, Praha, 2008[3] A.Kunimatsu, S.Tanabe, S.Ogawa, N.Kuze, A.Nakane, T.Okabayashi, M.Araki, The11 th Symposium on Molecular Spectroscopy, Hiroshima, 2011[4] M.Araki et al., ApJ, 744, 163, 2012