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SUMMARY:Perturber-disc interaction: Can we see the unseen? - Claudia Toci 
 / European Southern Observatory
DTSTART:20250319T134000Z
DTEND:20250319T140500Z
UID:TALK229564@talks.cam.ac.uk
CONTACT:128254
DESCRIPTION:Protoplanetary discs are the place in which planets form and e
 volve\, and the reservoir from which protostar accrete material. The prese
 nce of a perturber -whether a planet or a stellar companion-  and its inte
 raction with the parental disc play a crucial role in shaping the dynamics
  and evolution of the system\, generating substructures such as gaps\, rin
 gs and asymmetries routinely observed with different tracers in discs (lar
 ge -mm- dust and gas with ALMA\, small -micrometric dust- with VLT).\n\nHo
 wever\, characterizing these systems remains challenging: the only two pla
 netary companions unambiguously detected\, PDS70b and c\, lie in a wide an
 d open cavity of the same object\, and once the perturber is a star\, mass
 ive and wide enough to be detected\, characterize the binary orbit is chal
 lenging due to the timescales at play.\n\nIn this talk\, I will show new r
 esults to address and mitigate these issues. Firstly\, I will show new res
 ults from the  astrometry and the hydrodynamical models of GG Tau A\, a mu
 ltiple stellar system where the orbits of the stars is still not fully con
 strained. Then\, I will discuss how the advent of the Extremely Large Tele
 scope (ELT)\, with its first light imager MICADO/MORFEO\, will revolutioni
 ze the field\, providing high angular resolution images that will allow us
  to detect embedded protoplanets and small-scales substructures. 
LOCATION:The Hoyle Lecture Theatre + Zoom 
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