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SUMMARY: Direct windows to the formation of giant planets on wide orbits -
  Tomas Stolker (Leiden Observatory)
DTSTART:20210518T120000Z
DTEND:20210518T130000Z
UID:TALK157801@talks.cam.ac.uk
CONTACT:Dr Mathias Nowak
DESCRIPTION:High-contrast imaging surveys have revealed a population of gi
 ant planets and brown dwarfs that are orbiting at large separation from th
 eir star. The youngest of these objects (typically up to 10 Myr) show sign
 s of ongoing formation as inferred from hydrogen emission lines and excess
  flux coming from a circumplanetary/substellar disk. The formation pathway
 s and accretion processes in the planetary-mass regime remain not well und
 erstood. Therefore\, characterization of these objects during their format
 ion sheds light on the physical processes by which giant planets and possi
 ble moons around them form\, and will help to distinguish between planetar
 y 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 o
 n 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.
LOCATION:ONLINE - Details to be sent by email
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