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Table 1

Range of the Hnα lines suitable for the LTE approximation.

Te = 5000 K ne [cm−3]
EM [cm−6 pc] 1 × 102 5 × 102 1 × 103 5 × 103 1 × 104 5 × 104 1 × 105 1 × 106 1 × 107
1 × 105 88–127 74–156 69–181
5 × 105 71–104 67–112 56–154
1 × 106 69–91 65–95 55–123 51–143
5 × 106 60–72 53–77 49–84 41–122
1 × 107 51–66 48–69 41–97
5 × 107 43–51 38–53 36–59
1 × 108 41–47 36–45 34–47
5 × 108 32–36 30–35 25–35
1 × 109 28–31 24–29
5 × 109 20–23
1 × 1010 18–20 16–19
5 × 1010 15–17 14–15
Te = 10 000 K ne [cm−3]
EM [cm–6 pc] 1 × 102 5 × 102 1 × 103 5 × 103 1 × 104 5 × 104 1 × 105 1 × 106 1 × 107
1 × 105 82–138 68–173 62–201
5 × 105 67–115 62–126 51–174
1 × 106 66–100 61–106 51–140 47–163
5 × 106 58–79 50–88 46–98
1 × 107 49–76 46–81 38–112
5 × 107 46–58 43–59 37–67 35–77
1 × 108 42–53 36–56 34–61
5 × 108 33–42 32–42 26–59
1 × 109 32–38 30–38 25–43
5 × 109 22–28
1 × 1010 21–26 18–26
5 × 1010 17–20 15–19

Notes. The values of - at different ne and EMs for Te = 5000 and 10 000 K are given. The range between and shows the range of the Hnα lines suitable for the LTE approximation

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