Fig. 4.
Top: eclipse light curve of the Hα emission line flux in erg cm−2 s−1 and of the underlying continuum flux observed on 20 November 2000. Center: eclipse spectrum (black curve) thermal hydrogen spectrum adjusted to fit the Hα line flux (blue or red curve, see text). The ordinate is in units of 10−16 erg cm−2 s−1 Å−1. Bottom: difference spectra on the same color coding fitted by a dM6 star (red) and a dM5 star (blue, shifted upward by 0.05 units).
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