Statistics – Methodology
Scientific paper
Jun 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..confeth13p&link_type=abstract
"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec
Statistics
Methodology
Mini-Symposium: Fir/Thz Air/Space Missions
Scientific paper
Methanol and its isotopologues are well known tracers of gas grain chemistry with deuteration of the methyl group being energetically favorable in very cold environments on grain surfaces. In order to study the early evolution of star forming cores, constrain grain chemistry, and to develop a methodology for addressing the completely asymmetric internal rotation problem, the spectrum of CH_2DOH in its ground torsional state has been investigated to 1.6 THz. The study has facilitated the assignment of a complete ladder of highly interconnected energy levels in the e_0, e_1 and o_1 sub-states. The ground state spectrum of completely asymmetric CH_2DOH with C_S symmetry has been assigned to J > 25 and K_a = 8,9,8 in each substate, respectively. This K-range facilitates coverage of one full period of ρK and provides some valuable insight into the completely asymmetric internal rotation problem. The energy level structure also provide a unique opportunity for a direct comparison to normal methanol with its C_{3V} internal rotation. The spectral features, analysis and energy level structure will be discussed and compared to that of normal methanol.
Brauer Carolyn S.
Drouin Brian J.
Pearson John C.
Yu Shanshan
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