Table 6: Physical parameters and abundances for H II regions in the dIrrs of the Sculptor and M 81 groups, for which the electron temperature could be determined. The ${\rm O}^{++}/{\rm H}^{+}$ and ${\rm S}^{+}/{\rm H}^{+}$ abundances are the average of the two values obtained from the two lines of the doublet separately ( $\lambda \lambda 5007,4959$, and $\lambda \lambda 6716,6731$, respectively).
Parameter ESO 245-G005 ESO 245-G005 ESO 347-G017 ESO 473-G024 DDO 42
  external central #1    
T (O III) (K) 14 500-2020+1970 14 200-4680+4290 12 660-970+933 14 770-1690+1670 18 500-542+548
n(S II) (cm-3) $605\pm547$ $674\pm615$ $164\pm100$ $545\pm487$ $682\pm636$
${\rm O}^{++}/{\rm H}^{+}$ ( $\times10^{5}$) 2.27 $\pm $ 0.09 $7.75\pm0.16$ $6.63\pm0.24$ 2.84 $\pm $ 0.18 $3.82\pm0.53$
${\rm O}^{+}/{\rm H}^{+}$ ( $\times10^{5}$) 1.90 $\pm $ 0.96 $8.67\pm7.45$ $3.54\pm1.03$ 1.06 $\pm $ 0.47 $0.31\pm0.06$
${\rm O/{\rm H}}$ ( $\times10^{5}$) 4.17 $\pm $ 0.96 $16.42\pm7.45$ $10.17\pm1.06$ 3.90 $\pm $ 0.50 $4.13\pm0.53$
$12+\log{\textrm{(O/H)}}$ 7.61 $\pm $ 0.10 $8.17\pm0.21$ $8.00\pm0.05$ 7.59 $\pm $ 0.06 $7.61\pm0.06$
${\rm N}^{+}/{\rm O}^{+}$ ( $\times10^{2}$) ... $2.24\pm4.15$ $2.18\pm1.62$ 3.30 $\pm $ 4.77 $6.77\pm5.50$
$\log{\textrm{(N/O)}}$ ... $-1.65\pm0.46$ - $1.66\pm0.24$ -1.48 $\pm $ 0.39 $-1.17\pm0.26$
${\rm N}/{\rm H}$ ( $\times10^{6}$) ... $1.94\pm5.27$ $0.77\pm0.80$ 0.35 $\pm $ 0.66 $0.21\pm0.21$
${\rm S}^{+}/{\rm H}^{+}$ ( $\times10^{7}$) 3.29 $\pm $ 0.38 $9.73\pm3.68$ $5.06\pm0.48$ 1.81 $\pm $ 0.52 $0.72\pm0.18$
${\rm S}^{++}/{\rm H}^{+}$ ( $\times10^{7}$) 38.1 $\pm $ 24.6 ... ... ... $5.29\pm2.58$
ICF 1.32 $\pm $ 0.31 ... ... ... $1.97\pm0.24$
${\rm S/H}$ ( $\times10^{6}$) 5.44 $\pm $ 2.46 ... ... ... $1.19\pm0.26$
$12+\log{\textrm{(S/H)}}$ 6.69 $\pm $ 0.21 ... ... ... $6.06\pm0.10$
${\rm S/O}$ ( $\times10^{2}$) 1.30 $\pm $ 0.89 ... ... ... $0.29\pm0.10$
$\log{\textrm{(S/O)}}$ -1.89 $\pm $ 0.23 ... ... ... $-2.54\pm0.13$
Parameter NGC 625 NGC 625 NGC 59 NGC 59 UGC 4483
  #1 #2 #1 #2  
T (O III) (K) 10 100-1220+1060 9400-758+678 10 700-2020+1670 15 200-5640+5340 15 000-1900+1890
n(S II) (cm-3) $622\pm549$ $135\pm63$ $736\pm667$ $3120\pm3070$ $2000\pm1940$
${\rm O}^{++}/{\rm H}^{+}$ ( $\times10^{5}$) 16.42 $\pm $ 0.45 $15.41\pm0.54$ $19.01\pm0.48$ 8.11 $\pm $ 1.69 $2.92\pm0.08$
${\rm O}^{+}/{\rm H}^{+}$ ( $\times10^{5}$) 7.37 $\pm $ 4.01 $8.48\pm3.04$ $6\pm4.29$ 19.03 $\pm $ 6.93 $1.21\pm0.72$
${\rm O/{\rm H}}$ ( $\times10^{5}$) 23.79 $\pm $ 4.04 $23.89\pm3.09$ $25.01\pm4.32$ 27.14 $\pm $ 7.13 $4.13\pm0.72$
$12+\log{\textrm{(O/H)}}$ 8.37 $\pm $ 0.07 $8.37\pm0.06$ $8.39\pm0.08$ 8.42 $\pm $ 0.12 $7.61\pm0.08$
${\rm N}^{+}/{\rm O}^{+}$ ( $\times10^{2}$) ... ... $3.10\pm4.47$ ... $5.12\pm8.17$
$\log{\textrm{(N/O)}}$ ... ... $-1.51\pm0.39$ ... $-1.29\pm0.41$
${\rm N}/{\rm H}$ ( $\times10^{6}$) ... ... $1.86\pm4.01$ ... $0.62\pm1.36$
${\rm S}^{+}/{\rm H}^{+}$ ( $\times10^{7}$) 7.49 $\pm $ 0.44 $6.79\pm0.51$ $7.32\pm1.62$ 21.33 $\pm $ 6.80 $2.34\pm0.81$
${\rm S}^{++}/{\rm H}^{+}$ ( $\times10^{7}$) 153 $\pm $ 98 ... $156\pm139$ ...  
ICF 1.43 $\pm $ 0.37 ... $1.95\pm0.86$ ...  
${\rm S/H}$ ( $\times10^{6}$) 23.06 $\pm $ 9.87 ... $31.80\pm14.02$ ...  
$12+\log{\textrm{(S/H)}}$ 7.32 $\pm $ 0.20 ... $7.46\pm0.21$ ...  
${\rm S/O}$ ( $\times10^{2}$) 0.97 $\pm $ 0.58 ... $1.27\pm0.78$ ...  
$\log{\textrm{(S/O)}}$ -2.01 $\pm $ 0.20 ... $-1.90\pm0.21$ ...  

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