The rotation-tunneling spectrum of 3-hydroxypropenal and confirmation of its detection toward IRAS 16293$-$2422 B

H. S. P. Müller, A. Coutens, J. K. Jørgensen +3

3-Hydroxypropenal (HOCHCHCHO) is the lower energy tautomer of malonaldehyde which displays a complex rotation-tunneling spectrum. It was detected tentatively toward the solar-type…