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SUMMARY:Misalignments\, precession and shadows in protoplanetary discs - D
 r. Rebecca Nealon (University of Leicester)
DTSTART:20200127T140000Z
DTEND:20200127T150000Z
UID:TALK136459@talks.cam.ac.uk
CONTACT:Chris Hamilton
DESCRIPTION:Recent observations of protoplanetary discs have shown clear e
 vidence of warps and misalignments\, where the disc is best described with
  an orientation that changes as a function of the distance from the centra
 l star. A number of scenarios have been proposed to explain the origins of
  these misalignments\, including the presence of a hidden companion on an 
 orbit that is misaligned with respect to the outermost disc. By introducin
 g such a misaligned body we need to consider the potential of disc precess
 ion\, inclination damping and alignment time-scales. I will show how an un
 derstanding of these effects can allow us to infer what is happening in th
 ese systems with observed misalignments and the implications for their lon
 g term evolution. This tour will include applications to TW Hya (a rapidly
  moving shadow)\, misalignments induced by a flyby and rocking shadows.
LOCATION:MR14\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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