Fig. 1.
(a) Representative, continuum normalised, spectrum from our dataset. The red regions are those used for the continuum fitting. The absorption features of the calcium triplet and the hydrogen Paschen series are indicated. (b) Zoom on the calcium triplet 8498 Å line for the same spectrum. The red line shows the best-fit profile. The grey region, containing the Paschen P16 line, was excluded from the fit.
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