Kinematic Studies of Herbig-Haro Objects in the Orion Nebula

Abstract

Kinematic studies of most of the Herbig-Haro objects in M42 have been carried out. The proper motions of some of these objects have been determined through HST narrow band filter images taken four years apart; radial velocities of these objects have been obtained from high resolution échelle spectra taken at the Kitt Peak observatory using the Coudé Feed system. The three dimensional kinematic properties of these objects are presented. Proper interpretations of the data are discussed.