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While planet formation is thought to occur early in the history of aprotoplanetary disk, the presence of planets embedded in disks, or of otherprocesses driving disk evolution, might be traced from their imprints on thedisk structure. We observed the T Tauri star HD 143006, located in the 5-11Myr-old Upper Sco region, in polarized scattered light with VLT/SPHERE atnear-infrared wavelengths, reaching an angular resolution of ~0.037" (~6 au).We obtained two datasets, one with a 145 mas diameter coronagraph, and theother without, enabling us to probe the disk structure down to an angularseparation of ~0.06" (~10 au). In our observations, the disk of HD 143006 isclearly resolved up to ~0.5" and shows a clear large-scale asymmetry with theeastern side brighter than the western side. We detect a number of additionalfeatures, including two gaps and a ring. The ring shows an overbrightness at aposition angle (PA) of ~140 deg, extending over a range in position angle of~60 deg, and two narrow dark regions. The two narrow dark lanes and the overalllarge-scale asymmetry are indicative of shadowing effects, likely due to amisaligned inner disk. We demonstrate the remarkable resemblance between thescattered light image of HD 143006 and a model prediction of a warped disk dueto an inclined binary companion. The warped disk model, based on thehydrodynamic simulations combined with 3D radiative transfer calculations,reproduces all major morphological features. However, it does not account forthe observed overbrightness at PA~140 deg. Shadows have been detected inseveral protoplanetary disks, suggesting that misalignment in disks is notuncommon. However, the origin of the misalignment is not clear.As-yet-undetected stellar or massive planetary companions could be responsiblefor them, and naturally account for the presence of depleted inner cavities.

Shadows and asymmetries in the T Tauri disk HD 143006: Evidence for a misaligned inner disk