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Direct windows to the formation of giant planets on wide orbits

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If you have a question about this talk, please contact Dr Mathias Nowak.

High-contrast imaging surveys have revealed a population of giant planets and brown dwarfs that are orbiting at large separation from their star. The youngest of these objects (typically up to 10 Myr) show signs of ongoing formation as inferred from hydrogen emission lines and excess flux coming from a circumplanetary/substellar disk. The formation pathways and accretion processes in the planetary-mass regime remain not well understood. Therefore, characterization of these objects during their formation sheds light on the physical processes by which giant planets and possible moons around them form, and will help to distinguish between planetary and stellar-like formation scenarios. During this talk, I will present several results from our observational efforts in the study of accreting, directly imaged planets. In particular, I will discuss new constraints on the mass and radius of PDS 70 b and I will present ongoing work from an optical to mid-infrared characterization of GQ Lup B and its disk.

This talk is part of the Exoplanet Meetings series.

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