HIGH-RESOLUTION CO IMAGING OF THE MOLECULAR DISK AROUND THE JETS IN KJPN-8

We report high-resolution (2.'' 5) CO J = 1-0 line imaging that confir ms the presence of a molecular disk around the origin of the spectacul ar, 14' x 4', episodic jets in the planetary nebula KjPn 8. The disk i s 30 '' in diameter, with an expansion velocity of approximate to 7 km s(-1). The axis of the disk is aligned with the youngest and fastest (approximate to 300 km s(-1)) of the bipolar jets, and there is eviden ce for interaction between the jets and the disk material. The inner 4 '' of the disk are photoionized by the central star. The disk-jet sys tem dominates the environment of this young nebula and should govern t he morphology of KjPn 8 as it evolves to become fully ionized.