The ALMA-PILS survey: First detection of the unsaturated 3-carbon molecules Propenal (C${}_2$H${}_3$CHO) and Propylene (C${}_3$H${}_6$) towards IRAS 16293$-$2422 B

S. Manigand, A. Coutens, J. -C. Loison +11

Complex organic molecules with three carbon atoms are found in the earliest stages of star formation. In particular, propenal (C${}_2$H${}_3$CHO) is a species of interest due to its im…