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SUMMARY:Hydrogen-deficient binary stars with magnetic braking - David Bour
  / IoA
DTSTART:20251022T121500Z
DTEND:20251022T124000Z
UID:TALK239257@talks.cam.ac.uk
CONTACT:Xander Byrne
DESCRIPTION:Hydrogen-deficient binary stars comprise one star which has be
 en stripped of its hydrogen through mass transfer to a binary companion. O
 bservations show that the companion is able to accrete several solar masse
 s without spinning up to critical rotation\, and so there must be a mechan
 ism to drain spin angular momentum from the accretor. We test magnetically
  coupled winds and magnetic star-disc coupling as possible mechanisms and 
 find that\, while the disc coupling is negligible\, the winds are sufficie
 nt to allow the accretor to gain mass without spinning up to critical rota
 tion. However\, in order to fully replicate observations\, time-dependent 
 scalings of the dynamo-generated magnetic field are needed.
LOCATION:Hoyle Lecture theatre + Zoom 
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