Comparison between the observed spectra of VAS 20 (dashed line) and VAS 87 (solid line) in the region around the Mg ib triplet (top panel) and Hγ line (bottom panel). Both panels present a synthetic spectrum (dash-dotted line), for comparison, which was calculated with T_eff = 6300 K and log g = 3.9. To better appreciate the similarities between the two stars, we convolved the spectrum of VAS 87 to the same υsini of VAS 20.