Fig. 5
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H-R diagram of all investigated stars. Coloured open symbols stand for stars in double (blue circles), triple (red triangles), quadruple (green squares), and higher-order multiple systems (purple diamonds). Grey dots represent selected field stars from Gaia. The black solid line is the updated main sequence of Pecaut & Mamajek (2013). The stars outside the main sequence are discussed in the text.
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