Linking interstellar and cometary O${}_2$: a deep search for ${}^{16}$O${}^{18}$O in the solar-type protostar IRAS 16293--2422

Vianney Taquet, Ewine F. van Dishoeck, Matthew Swayne +15

Recent measurements carried out at comet 67P/C-G with the $Rosetta$ probe revealed that molecular oxygen, O${}_2$, is the fourth most abundant molecule in comets. Models show t…