Fig. 5

He i at λ 10833 Å, used for the estimation of ν∞ in IGR J17544-2619 fitting the blue wing of the P-Cygni profile. We show the observation (solid blue line), best-fit model (red dashed line), a model with ν∞ = 1300 km s-1 (green dashed line), and a model with ν∞ = 1700 km s-1 (pink dashed line).
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