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Fig. 3

image

Illustrative spectra in the VIS wavelength range. The red spectrum is a telluric sky model, smoothed to R ~ 10 000. From top to bottom, the stars are 2MASS J01003150-7307237, 2MASS J00571648-7310527, 2MASS J00493262-7317523 and 2MASS J00571214-7307045. Offsets of 0, 2, 4, 6 and 8 flux units have been applied to the C-star spectra and the telluric spectrum for display.

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