Detection of doubly-deuterated methanol in the solar-type protostar IRAS 16293-2422
Detection of doubly-deuterated methanol in the solar-type protostar IRAS 16293-2422
We report the first detection of doubly-deuterated methanol (CHD2OH), as well as firm detections of the two singly-deuterated isotopomers of methanol (CH2DOH and CH3OD), towards the solar-type protostar IRAS 16293-2422. From the present multifrequency observations, we derive the following abundance ratios: , , . The total abundance of the deuterated …