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.
@article{arxiv.1109.1957,
title = {Abundances and ADFs in PNe with WC central stars},
author = {Jorge García-Rojas and Miriam Peña and Christophe Morisset and Maria Teresa Ruiz},
journal= {arXiv preprint arXiv:1109.1957},
year = {2015}
}
Comments
Poster contribution (2 pages, 1 figure) to IAU Symposium 283: "Planetary Nebulae: An Eye to the Future" held in Puerto de la Cruz, Tenerife, Spain in July 25th-29th 2011