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Information × Registration Number 0213U000294, 0112U004100 , R & D reports Title "Large amplitude motions of astrophysical molecules investigated by high-resolution spectroscopy in the gas phase : THz instrumentation, quantum modeling and databases for Herschel, ALMA, SOFIA.". 1-st stage: "Investigation of the microwave spectra of astrophysical molecules: methyl formate, methylamine, acetaldehyde". popup.stage_title Head Ilyushin Vadim Vadimovich, Доктор фізико-математичних наук Registration Date 30-01-2013 Organization Institute of Radio Astronomy of Sciences of Ukraine popup.description2 Object of study is the spectra of acetaldehyde, methyl formate and methylamine molecules in the millimeter, sub-millimeter and THz frequency ranges. Purpose of the work is to provide necessary supporting information for the spectra of these molecules for the radio astronomical observations of interstellar space. The research method is the experimental measurement of the molecular spectra in the gas phase followed by analysis using corresponding quantum-mechanical models. The results of the first year of the joint research project NAS of Ukraine - CNRS (France) are presented. Experimental and theoretical investigations of submillimeter spectra of following astrophysical molecules have been carried out: acetaldehyde (12CH312CHO, 13CH312CHO, 12CH313CHO), methyl formate (HCOOCH3), and methylamine (12CH3NH2, 13CH3NH2). Spectra of acetaldehyde and methyl formate molecules were analyzed using the Rho axis method, spectra of methylamine molecule were analyzed using the high-barrier tunneling formalism. For all investigated spectra the theoretical description within the accuracy of available experimental data was obtained. The mutual visits of experts from France and Ukraine were organized with the aim of joint research, data processing and preparation of joint publications. Product Description popup.authors Ілюшин Вадим Вадимович Алексеєв Євгеній Анатолійович Дюбко Станіслав Пилипович Куценко Олександр Сергійович Погребняк Микола Леонідович Смірнов Іван Олександрович popup.nrat_date 2020-04-02 Close