Table 2: Electron density indicators in NGC 6886.
Ion Ioniz. Lines Observed $N_{\rm e}$

pot. (eV) used ratio (cm^-3)

[S II] 10.4 6731/6716 2.0 10 000

13.6 3626/3729 2.0 5200

23.8 5538/5518 2.1 16 000

40.7 4711/4740 0.77 6000

**Table 2:** Electron density indicators in NGC 6886.
Ion	Ioniz.	Lines	Observed	$N_{\rm e}$
	pot. (eV)	used	ratio	(cm^-3)
[S II]	10.4	6731/6716	2.0	10 000
	13.6	3626/3729	2.0	5200
	23.8	5538/5518	2.1	16 000
	40.7	4711/4740	0.77	6000

Source LaTeX | All tables | In the text

	1 Introduction
	2 The spectrum of NGC 6886
	3 Radius and luminosity of the central star
	4 Chemical composition of NGC 6886 from the simplified analysis
	5 Model
	6 Discussion
	7 Nebular abundances
	8 Evolutionary state
	9 Conclusion
	References