CO interferometric observations of M1-92 (the minkowski's footprint)

We present high spatial resolution observations of the CO emission at 2.6mm in the protoplanetary nebula M1-92 (Minkowski's Footprint), obtained with the Plateau de Bure interferometer. The total mass corresponding to the CO measured intensity is estimated to be large, of about 0.1–0.2 solar masses. The cartography is particularly rich and revealing. From the measured position-velocity distribution of brightness, we conclude that a strong dynamical interaction between the AGB and post-AGB winds is present.