Fig. 3

Spectral typing of J04393+335 with best-match and
methods. Top
panel: best-match. CAFOS normalised spectra of the target star and of
the standard star that fits best (top) and the difference
(bottom). Bottom panel:
. Values of χ2 as a
function of the spectral type (open red circles). The vertical dashed line marks
the spectral type at the lowest χ2 value. Note the logarithmic
scale in the Y axis.
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