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Information × Registration Number 0215U007021, 0114U002821 , 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." 3-nd stage: "Investigation of the microwave spectra of astrophysical molecules: acetone and 13C-acetonre.". popup.stage_title Head Ilyushin Vadim Vadimovich, Доктор фізико-математичних наук Registration Date 27-01-2015 Organization Institute of Radio Astronomy of Sciences of Ukraine popup.description2 Object of study is the spectra of acetaldehyde, methylformate, methylamine, N-methylformamide, 1,3-propandiol, propionic acid, propionamide, acetone and 2-butynal in the millimeter and sub-millimeter 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 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), methylformate (HCOOCH3), methylamine (12CH3NH2, 13CH3NH2, CH3ND2, CH3NHD), N-methylformamide (CH3NHCHO), 1,3-propandiol (CH2(CH2OH)2), propionamide (CH3CH2C=O(NH2)), propionic acid (CH3CH2COOH), acetone ((CH3)2CO, (CH3)213CO) and 2-butynal (CH3CCCHO). Spectra of acetaldehyde, methylformate, N-methylformamide, propionamide, propionic acid and 2-butynal were analyzed using the Rho axis method, spectra of 1,3-propanediol and methylamines were analyzed using the high-barrier tunneling formalism, and spectra of acetones with the help of recently developed in IRA NASU model for C2v molecules with two equivalent internal C3v rotors. In the course of the project 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 Будніков Владислав Вікторович Доровська Ольга Анатоліївна Дюбко Станіслав Пилипович Мещеряков Артур Олексійович Погребняк Микола Леонідович Тільний Павло Павлович Шевченко Віталій Іванович popup.nrat_date 2020-04-02 Close