Torsional-rotational spectrum of doubly-deuterated dimethyl ether (CH${}_3$OCHD${}_2$) -- First ALMA detection in the interstellar medium

C. Richard, J. K. Jørgensen, L. Margulès +3

In 2013, we have published the first rotational analysis and detection of mono-deuterated dimethyl ether in the solar-type protostar IRAS 16293-2422 with the IRAM 30m telescope. Di…