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Fig. 5


Line profiles from the mid-resolution VLT/XSHOOTER spectrum obtained on Feb. 25, 2012. From top to bottom and left to right: Hα, Hβ, the higher Balmer series and Ca IIK, and HeI 1083 nm. The lower axis is labeled with velocities corrected for the star’s radial velocity (Vrad = 17.2 km s-1; Donati et al. 2010), except for the higher Balmer series where it is labeled in wavelength. The continuum flux has been scaled to unity for all profiles. The dotted Hα and Hβ profiles shown in the upper panels are the mean profiles obtained during AA Tau’s bright state by Bouvier et al. (2007).

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