Abundances and ADFs in planetary nebulae with [WC] central stars

García-Rojas, J.; Peña, Miriam; Morisset, C.; Ruiz, Maria-Teresa
Bibliographical reference

Planetary Nebulae: An Eye to the Future, Proceedings of the International Astronomical Union, IAU Symposium, Volume 283, p. 364-365

Advertised on:
8
2012
Number of authors
4
IAC number of authors
2
Citations
0
Refereed citations
0
Description
We present preliminary results obtained from the analysis of very deep echelle spectra of a dozen planetary nebulae with [WC] or weak emission lines (wels) central stars. The computed abundance discrepancy factors (ADFs) are moderate, with values lower than 4. In principle, no evidence of the H-poor metal enriched inclusions proposed by Liu et al. (2000) have been found. However, a detailed analysis of the data is in progress.