Spectral analyses of WR-type central stars of planetary nebulae

Details Spectral analyses of WR-type central stars of planetary nebulae Spectral analyses of WR-type central stars of planetary nebulae

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ap%26ss.275...41k&link_type=abstract

Astrophysics and Space Science, v. 275, Issue 1/2, p. 41-52 (2001).

Astronomy and Astrophysics

Astrophysics

28

Scientific paper

So far, the evolution of post-AGB stars is not fully understood. In particular the formation of hydrogen-deficient and hydrogen-free Central Stars of Planetary Nebulae (CSPN) is unsettled. New evolution models, which allow for the consistent treatment of the physics of late thermal pulses, promise new insights to the formation of these stars. In this paper we summarize the results of non-LTE analyses of CSPN with wind. By comparing these results with the predictions of the new evolution models, open questions concerning the evolution of the stars might be answered. In addition we discuss the driving mechanism of the winds of Wolf-Rayet CSPN. New models, which account for millions of iron lines, support the assumptions that these winds are driven by radiation.

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