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Fig. 2


Comparison between the photometric data (asterisks) and the continuum theoretical spectrum (full line) for the nine sample stars. If several observations are available at the same wavelength, only the maximum and minimum flux value were plotted, except at (sub)millimetre and centimetre wavelengths as this wavelength region is of particular interest here. Most of the error bars fall within the symbols for the data. A reversed triangle represents an upper limit.

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