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Table 2

Abundances of sulfur ions.

ID Te (K) nе (cm−3) Eem ([SII])(a) Eem ([S III])(b) (erg s−1) Eem ([S IV])(c) Eem (Pfβ)(d) (erg cm−3 s−1) S+/H+ S++/H+ S3+/H+ [S/H]ion
H II 9000 3330 4.85(−17) 3.64(−17) 1.70(−16) 2.42(−27) 1.30(−6) 7.02(−6) 8.09(−8) 8.40(−6)
Atomic 8690 3190 4.40(−17) 3.58(−17) 1.65(−16) 2.34(−27) 1.09(−6) 7.08(−6) 1.63(−7) 8.33(−6)
DF 1 8130 2050 2.76(−17) 2.73(−17) 1.16(−16) 2.54(−27) 1.04(−6) 6.80(−6) 2.54(−7) 8.09(−6)
DF 2 8160 1970 2.70(−17) 2.66(−17) 1.12(−16) 2.54(−27) 1.08(−6) 6.84(−6) 2.65(−7) 8.19(−6)

Notes. (a)Emissivity of the [SII] 6731 Å line per S+ atom; (b)emissivity of the [S III] 18 µm line per S++ atom; (c)emissivity of the [S IV] 10 µm line per S3+ atom; (d)emissivity of the Pfβ line per nH+×ne${n_{{{\rm{H}}^ + }}} \times {n_{\rm{e}}}$. Notation: 4.85(−17) = 4.85×10−17.

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