Carbon monoxide emission as a precise tracer of molecular gas in the Andromeda galaxy.

Presents research which studied the carbon monoxide (CO) emission of the molecular clouds of M31, the Andromeda galaxy. Star formation in clouds of cold molecular hydrogen (H2); Problems studying H2 in the cold interstellar medium; Use of CO emissions to trace H2; Tie between CO emission and cosmic dust; CO useful to trace molecular gas.