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Fig. 2


Multi-epoch observations of YSES 2 and its planetary-mass companion. Final data products of the SPHERE observationscollected in the H band (left panel) and Ks band (right panel) are presented. For both filters, the stellar PSF is modeled by 50 principal components that were derived from a reference library of YSES targets. These PSF models were subtracted and the residuals rotated such that north points up and east toward the left. In the presented images the median of these de-rotated residuals is shown. For the Ks band data, uncorrected residuals of a wind-driven halo are detected that extend from the northeast to southwest. The planet YSES 2b is highlighted by white arrows. The primary is located at the origin of the coordinate system and we artificially masked the inner region up to the radial extent of the coronagraphic mask of 100 mas. To assess the spatial extent of the instrumental PSF, the median combination of the non-coronagraphic flux images of the primary star are shown in the lower left of each panel. The intensity of each flux image is rescaled to match the maximum and minimum counts in the corresponding residual science image, and we display both images with the same spatial and color scales.

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