Table 13: Comparison of abundances in NGC 40.
Elem. Present Clegg(1) AC(2) Solar(3)
He $\geq$0.046 $\geq$0.044 $\geq$0.05 0.098
C(-4) 19 10   3.3
N(-4) 1.3 2.4 0.98 0.84
O(-4) 5.3 8.4 6.0 4.9
S(-6) 5.6 3.9 4.1 19
Ar(-6) 3.4     2.5
Ne(-4) 1.4     1.2
Fe(-7) 6.1     320
(1) Clegg et al. (1983); (2) Aller & Czyzak (1979); (3) Solar: Anders & Grevesse (1989);
Allende Prieto et al. (2001); Grevesse & Sauval (1998).

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