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Table 3

Star magnitude m*, the contrast of CCb or its upper limit (cont_b) and the associated uncertainty (err_cont) at different wavelengths.

λ m* cont_b mb Reference
(μm) (mag) (mag) (mag)
4.8 4.13 9.2 13.33 ± 0.16 1
3.8 4.2 9.0 13.2 ± 0.4 2
3.8 4.52 9.4 13.92 ± 0.1 1
3.8 13.06 ± 0.51 3

2.25 5.42 11.68 17.10 ± 0.60 4
2.2 5.42 >9.09 >14.51 5
2.1 5.42 > 9.60 > 15.02 1
2.11 5.42 12.08 17.50 ± 0.49 4

1.60 19.40 ± 0.32a 6
1.58 5.96 >12.5 >18.46 4

1.25 6.42 > 13.6 > 20.02 4

Notes. The values obtained during this study are not corrected for dust extinction. (a)This value refers to the apparent magnitude of the source identified by Currie et al. (2015) and located at about 28 mas (~ 0.7λD) from the expected position of the source detected at longer wavelengths.

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