Context. The deuteration of molecules forming in the ices such as methanol (CH 3 OH) is
sensitive to the physical conditions during their formation in dense cold clouds and can be …

Deuterium fractionation in molecules is known as one of the most powerful tools to study
chemical processes during star and planet formation. Among various interstellar molecules …

Context. The abundances of deuterated molecules with respect to their main isotopologue
counterparts have been determined to be orders of magnitude higher than expected from …

New transitions are reported in the submillimeter wave, terahertz, and far-infrared rotation-
torsion spectrum of doubly-deuterated methanol CD 2 HOH. The newly assigned transitions …

Methanol (CH 3 OH) is an abundant interstellar species and is known to be an important
precursor of various interstellar complex organic molecules. Among the methanol …

Context. Detection of deuterated species may provide information on the evolving chemistry
in the earliest phases of star-forming regions. For molecules with two isomeric forms of the …

High-resolution spectral studies have been continued for the doubly deuterated methanol
species (CHD 2 OH) in the entire region from far infrared (FIR) to Infrared (IR). The spectrum …

The torsional and rotation–torsion spectra of the doubly deuterated species of methanol CD
2 HOH have been analyzed using submillimeter wave, terahertz, and far infrared spectra …

In this short communication the selection rules for transitions involving asymmetry split
energy levels belonging to various torsional-vibrational–rotational states are put forward for …

In this paper new type of ΔK= 2 and 0 transitions have been identified in the Fourier
Transform spectrum of Methanol-D 1 (CH 2 DOH). These transitions are normally forbidden …