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Fig. 3


IRDIS detection limits achieved during the observations of HD 284149 in terms of Δmag (left panel) and minimum companion mass (right panel) vs. separation. The mass limits are evaluated using the BT-Settl models by Allard et al. (2012) and assuming an age of 35 Myr. The blue and red curves show the limits achieved for the coronagraphic and non coronagraphic images, respectively. The dashed line shows the limits evaluated using the images processed using the TLOCI method for speckle suppression (Marois et al. 2014), while the solid lines show the ones obtained using the images reduced using the PCA algorithm (Soummer et al. 2012; Amara & Quanz 2012).

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