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Table 4

Magnitude and spectral types limits for the companions for r> 0.2″.

Star ΔH m H ΔK m K Δ NB Sp. Typ.

Y Oph >5.6 >8.4 >4.8 >7.5 >6.1 B7V
FF Aql >5.0 >8.6 >4.1 >7.6 >6.0 A9V
X Sgr >6.0 >8.7 >5.0 >7.7 >6.6 A9V
W Sgr >5.5 >8.4 >4.7 >7.5 >6.4 A1V
η Aql >7.6 >9.7 >7.0 >9.0 >8.3 G5V

Notes. ΔNB denotes the contrast limit in the narrow band filters. Sp. Typ. represents the spectral-type upper limit in the narrow band filters.

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