Diffuse X-rays from PNe with WR-type central stars

U. Rühling, C. Sandin, M. Steffen, D. Schönberner, W.-R. Hamann, H. Todt, Klaus Werner, T. Rauch
With the help of detailed nebula modeling and X-ray observations, we want to shed light on the enigmatic origin of Wolf-Rayet type central stars of planetary nebulae. This method allows us to assign observed [WC] stars to one of the proposed evolutionary scenarios, attributing the loss of hydrogen to a "late", "very late", or an "AGB final" thermal pulse (LTP, VLTP and AFTP, respectively). Following our analysis, we conclude that BD +30 • 3639 evolved through an AFTP.
doi:10.1063/1.3527807 fatcat:d6b32qxlnzgbhg5yfu6cy6plnu