The planetary nebula NGC 6153 through the eyes of MUSE

Abstract

In this contribution, we present the results of a study on the high abundance discrepancy factor (ADF $\sim$ 10) planetary nebula (PN) NGC 6153 with MUSE. We have constructed flux maps for dozens of emission lines, that allowed us to build spatially resolved maps of extinction, electron temperature ($T_{\mathrm{e}}$), electron density ($n_{\mathrm{e}}$), and ionic abundances. We have simultaneously constructed ADF maps for O${}^{+}$ and O${}^{2+}$ and found that they centrally peak in this PN, with a remarkable spatial coincidence with the low $T_{\mathrm{e}}$ found from recombination line diagnostics. This finding strongly supports the hypothesis that two distinct gas phases co-exist: one cold and metal-rich, and a second warm and with ``normal'' metal content. We show that to build $T_{\mathrm{e}}$([N II]) and ionic abundance maps of low-ionization species for these objects, recombination contribution to the auroral [N II] and [O II] lines must be properly evaluated and corrected.

6 pages, 3 figures, conference proceedings of the XV Scientific Meeting of the Spanish Astronomical Society