S22A0015
S22A0015
Despite many efforts of direct imaging to search for planets forming in protoplanetary disks, only a handful of young planets have ever been found (e.g., PDS 70b and c). Alternative observing methods are necessary to find and characterize young planets. Here we propose a pilot program with SCExAO fast-PDI imaging to observe HD 143006 and HD 163296, to search for the scattered light counterparts of the ALMA CO kinks in order to confirm the planet candidates found in them, and the planet-host disk PDS 70, to establish a benchmark system with planets in precise PDI imaging. Our experiments also serve as a capability demonstration for the new SCExAO fast-PDI mode. A massive planet embedded in the disk is expected to cause a local deviation from the spiral structure. Such deviations depend on the planetary mass, and thus, we could estimate the unseen planet mass by comparing observed kink with hydrodynamic simulations. Furthermore, the kink structure directly points to the position of embedded planets. As a by-product of fast-PDI observations, we will also investigate the inner disk at r<∼0.1″ which is generally occulted by a coronagraphic mask, to search for structures such as gap/ring and spiral structures in inner disks.
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