MUSE spectroscopy of the high abundance discrepancy planetary nebula NGC 6153

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Volume 689 (September 2024)

A&A, 689 (2024) A228

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Table 6

Ionisation correction factors (ICFs) obtained using three different methodologies (see text).

Ab ratio	ICF	Literature	Look-up table	ANN
N/H	N⁺/H⁺	−	${12.72}_{- 1.17}^{+ 1.43}$ $\[12.72_{-1.17}^{+1.43}\]$	${14.69}_{- 2.97}^{+ 3.06}$ $\[14.69_{-2.97}^{+3.06}\]$
N/O	N⁺/O⁺	${1.16}_{- 0.12}^{+ 0.21}$ $\[1.16_{-0.12}^{+0.21}\]$	${1.24}_{- 0.07}^{+ 0.08}$ $\[1.24_{-0.07}^{+0.08}\]$	${1.27}_{- 0.12}^{+ 0.13}$ $\[1.27_{-0.12}^{+0.13}\]$
O/H	(O⁺ + O²⁺)/H⁺	${1.03}_{- 0.06}^{+ 0.07}$ $\[1.03_{-0.06}^{+0.07}\]$	1.01 ± 0.01	1.04 ± 0.02
S/H	(S⁺ + S²⁺)/H⁺	−	${1.34}_{- 0.03}^{+ 0.04}$ $\[1.34_{-0.03}^{+0.04}\]$	${1.31}_{- 0.04}^{+ 0.06}$ $\[1.31_{-0.04}^{+0.06}\]$
S/O	(S⁺ + S²⁺)/O⁺	${0.13}_{- 0.02}^{+ 0.03}$ $\[0.13_{-0.02}^{+0.03}\]$	${0.13}_{- 0.01}^{+ 0.02}$ $\[0.13_{-0.01}^{+0.02}\]$	${0.11}_{- 0.02}^{+ 0.03}$ $\[0.11_{-0.02}^{+0.03}\]$
S/O	(S⁺ + S²⁺)/(O⁺ + O²⁺)	−	1.33 ± 0.04	${1.32}_{- 0.06}^{+ 0.07}$ $\[1.32_{-0.06}^{+0.07}\]$
Cl/H	Cl²⁺/H⁺	−	${1.38}_{- 0.02}^{+ 0.03}$ $\[1.38_{-0.02}^{+0.03}\]$	${1.41}_{- 0.04}^{+ 0.05}$ $\[1.41_{-0.04}^{+0.05}\]$
Cl/H	(Cl²⁺ + Cl³⁺)/H⁺	−	1.05 ± 0.01	1.05 ± 0.01
Cl/O	Cl²⁺/O⁺	${0.14}_{- 0.03}^{+ 0.04}$ $\[0.14_{-0.03}^{+0.04}\]$ ^(a)	${0.13}_{- 0.01}^{+ 0.02}$ $\[0.13_{-0.01}^{+0.02}\]$	${0.12}_{- 0.02}^{+ 0.03}$ $\[0.12_{-0.02}^{+0.03}\]$
Ar/H	(Ar²⁺ + Ar³⁺)/H⁺	−	1.01 ± 0.01	1.01 ± 0.01
Ar/O	Ar²⁺/(O⁺ + O²⁺)	${1.36}_{- 0.58}^{+ 0.66}$ $\[1.36_{-0.58}^{+0.66}\]$	1.29 ± 0.02	${1.32}_{- 0.09}^{+ 0.08}$ $\[1.32_{-0.09}^{+0.08}\]$
Kr/H	Kr³⁺/H⁺	${2.96}_{- 0.23}^{+ 0.26}$ $\[2.96_{-0.23}^{+0.26}\]$	−	−

Notes. ^(a)In their Table 3, Delgado-Inglada et al. (2014) wrongly parameterise their ICF_f using υ while it should be using ω, as they correctly write in their text.

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