Companion fraction CF as measured with GRAVITY for mass ranges < 3 M⊙, 3–7 M⊙, 7–16 M⊙, > 16 M⊙ (red circles). The values from Duchêne & Kraus (2013) for very low mass stars (VLM), spectral types M, K, G, F, A, B, early B and O (from left to right), and the values from Sana et al. (2014) for O stars are plotted for reference. The companion fraction of Sana et al. (2014) depends on the considered separation range for companions. A range ≲600 AU is similar to the separations in our sample.
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