Extended Data Fig. 4: Error-weighted mean He I λ6678 intensity map.
From: High-resolution [O I] line spectral mapping of TW Hya supportive of a magnetothermal wind
a, Error-weighted mean He I λ6678 intensity map of TW Hya. b, Two slice cuts (white lines) for He I λ6678 line map shown in a, overplotted with the PSF (dark dashed lines) near He I λ6678 line. The dotted line in each panel is the standard deviation along the slice cut. c, He I λ6678 line residual map after a subtraction of a PSF which has been normalized to line map by the peak emission. d, the signal-to-noise ratio map for the He I λ6678 line residual map shown in c. The cyan and blue lines show contours with S/N=2 and 3, respectively.
