A new look at the OB associations and star clusters in the Puppis-Vela region using HIPPARCOS data

Abstract

The Puppis-Vela region contains a few OB associations and young star clusters which are the imprints of recent star formation. As this region comprises of many star clusters in the line of sight, accurate distance and proper motion estimates of the stars are necessary to assign membership. Due to the lack of such estimates, the identity as well as the member stars of the association as well as star clusters could not be estimated. We study the kinematics of this region lying between, 1-230-290 and b~-20-20 using the HIPPARCOS data.