RT Journal Article
T1 THz extended spectrum of the monodeuterated methyl formate (DCOOCH3)
A1 Duan, C.
A1 Carvajal Zaera, Miguel
A1 Yu, S.
A1 Pearson, J. C.
A1 Drouin, B. J.
A1 Kleiner, I.
AB Context. Laboratory spectral recordings and an accurate molecular spectral analysis of any potential interstellar molecule are essentialfor generating a complete spectroscopic line list. This permits predicting the frequencies and intensities of any transition so thatsubsequently, it can be identified in the interstellar medium.Aims. Our analysis of DCOOCH3 aims to provide a comprehensive spectral catalog that encompasses as much as possible the frequencycoverage of the new-generation far-IR and submillimeter wave observation facilities.Methods. We newly measured the rotational spectrum of DCOOCH3 in the laboratory of the Jet Propulsion Laboratory in the frequencyrange of 0.85 to 1.5 THz. We jointly analyzed the new data with literature data using the rho axis method, which is a tooldeveloped for the spectral analysis of molecules with large-amplitude internal CH3 rotors.Results. We fit 27 spectroscopic constants of DCOOCH3 to 3763 transitions with highest values of J = 69 and Ka = 36 of the groundtorsional state with a standard (unitless) deviation of 0.97. With respect to previous work, this is a significantly better result that wasobtained with 2060 more transitions, and we also achieved a better accuracy for the new parameter values.
PB Springer Verlag
SN 0004-6361
SN 1432-0746 (electrónico)
YR 2015
FD 2015
LK http://hdl.handle.net/10272/10693
UL http://hdl.handle.net/10272/10693
LA eng
NO Duran, C., Carvajal Zaera, M., Yu, S., Pearson, J.C., Drouin, B.J., Kleiner, I.: "THz extended spectrum of the monodeuterated methyl formate (DCOOCH3)". Astronomy and Astrophysics. Vol. 576, A 39, (2015). DOI 10.1051/0004-6361/201425328
NO This research was supported by the FIS2011-28738-C02-02 project (MINECO, Spain), the French PCMI (Programme National de Physique Chimie du Milieu Interstellaire), and the National Natural Science Foundation of China (Grant No. 11174098). M.C. acknowledges the research stay at the Universite Paris Diderot under the Guest Faculty programme in May 2014. Portions of this paper present research carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Government sponsorship is acknowledged.
DS Repositorio Institucional de la Universidad de Huelva
RD 29 may 2026