Fig. 4.
Heating efficiency, η, versus mass-loss rates for HD 189733 b (orange), HD 209458 b (cyan), and GJ 3470 b (black). H/He ratios of 99/1 for HD 189733 b and of 98/2 for HD 209458 b and GJ 3470 b were used. Dotted lines show the extended T–Ṁ ranges and thick lines the derived T–Ṁ ranges (see the dotted lines and symbols, respectively, in Fig. 1).
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