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Fig. 1


X-shooter spectra of sdK7 to sdM2. The main spectral features are highlighted. They are mainly from Jones et al. (1994), Kirkpatrick et al. (1993), Geballe et al. (1996) and Allard et al. (1997). The regions where telluric absorption are too strong to be properly corrected are removed from our Chi-square analysis.

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