Abstract
The PN M2-48 is formed by three main structures, namely, a bipolar central region (CR), a set of knots tracing a semicircular shell surrounding CR, and two symmetric bow-shocks. CR shows a kinematic structure corresponding to a bipolar shell, with an expansion velocity of =~ 50kms-1. The semicircular shell appears to be expanding at =~ 20kms-1, except in the regions aligned with the bow-shocks, which are interpreted as jet-shell interaction zones at =~ 100kms-1. Finally, the bow-shocks have uncorrected velocities of =~ 80kms-1. An inclination angle of 10^o with respect to the plane of the sky is estimated using simple bow shock models.
