Table 11: Ionic concentrations and chemical abundances in NGC 3242. Wavelengths in Angstrom for all values of $\lambda $ above 1000, otherwise in $\mu $m.
Ion $\lambda $ (I/H$\beta $)$\dagger$ $N_{{\rm ion}}$/ $N_{{\rm p}}$ ICF $N_{{\rm el.}}$/ $N_{{\rm p}}$
He+ 5875 11.1 0.0707    
He++ 4686 25 0.0212 1.0 0.092
C+ 2324 7.65 6.8(-6)    
C++ 1909 181 1.61(-4)    
C+3 1548 29.4 2.6(-5) 1.0 1.95(-4)
N+ 6584 2.7 4.1(-7)    
N++ 1750 4.23 (-5)    
N++ 57.3 14.5 5.7(-5)    
N+3 1485 7.0 4.39(-5)    
N+4 1239 5.1: 3.6(-5): 1.0 1.35(-4)
O+ 3729 5.36 5.1(-6)    
O++ 5007 1280 3.18(-4)    
O++ 51.7 162 4.38(-4)    
O+3 25.8 137 4.3(-5) 1.0 3.8(-4)
Ne+ 12.8 1.31 1.8(-6)    
Ne++ 15.5 116 7.53(-5)    
Ne++ 3869 103 6.5(-5)    
Ne+3 2423 12.6 1.25(-5)    
Ne+4 14.3 0.31 3.1(-8) 1.0 9.0(-5)
S+ 6731 0.392 1.8(-8)    
S++ 18.7 8.33 8.38(-7)    
S++ 6312 0.61 8.3(-7)    
S+3 10.5 70.3 1.94(-6) 1.0 2.8(-6)
Ar++ 8.99 8.48 8.32(-7)    
Ar++ 21.8 0.345 5.2(-7)    
Ar++ 7135 7.0 5.0(-6)    
Ar+3 4740 4.3 8.49(-7)    
Ar+4 7005 0.083 1.4(-8) 1.0 1.7(-6)
Cl++ 5538 0.28 2.7(-8)    
Cl+3 11.8 0.616 3.51(-8)    
Cl+3 8045 0.5: 4.0(-8): 1.1 7.5(-8)
Fe++ 22.9 1.55 4.7(-7)   :
Fe++ 33.0 0.51 5.8 (-7) 1.6 8.0(-7)
P++ 17.9 0.322 1.33(-8): 3.5: 4.5(-8):
C++ 4267 0.62 6.0(-4):    
$\dagger$ Intensities given with respect to H$\beta=100$.
: Indicates uncertain value.


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