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

U. Rühling^{1, 2}, C. Sandin², M. Steffen², D. Schönberner², W.-R. Hamann¹, H. Todt¹,

¹Institut für Physik und Astronomie, Universität Potsdam, Germany
²Astrophysikalisches Institut Potsdam, Germany

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.

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