Properties of [WR] planetary nebulae

In the present study, we have conducted plasma diagnostics and abundance analyses of 18 Galactic PNs surrounding [WR] and wels nuclei, using collisionally excited lines (CELs) and optical recombination lines (ORLs) measured with the Wide Field Spectrograph on the Australian National University 2.3m telescope at the Siding Spring Observatory complemented with optical archival data.

Our plasma diagnostics imply that the electron densities and temperatures derived from CELs are correlated with the intrinsic nebular H{beta} surface brightness and excitation class, respectively. Self-consistent plasma diagnostics of heavy-element ORLs of N^2+^ and O^2+^ suggest that a small fraction of cool (<=7000K), dense (~10^4^-10^5^cm^-3^) materials may be present in some objects, though with large uncertainties.