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Fig. 3

image

Left: goodness-of-fit (G′′ factor, see text for details) with respect to the spectral type for the comparison of our IRDIFS data of the HD 211847 candidate to spectral templates from various stellar and brown-dwarfs libraries; the best fit is shown by a vertical line. Right: best-fit spectrum of Gl 866 (plain red line) compared to the extracted data points (black dots).

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