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Fig. 2


Spectral energy distribution (SED) for S 1 based on all existing photometry. The solid curve represents the SED for a reddened blackbody corresponding to a B4V star (Teff = 17 000 K, R = 4.35 R) with an EBV = 3.8 and RV = 3.35 (that is, AV = 12.7 mag), see Sect. 3.

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