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UID:20260517T091417-04-1564hvJrVU@https://astronomia.uc.cl/2jucext1/institu
 toastrofisica/
DTSTAMP:20260517T131417Z
DESCRIPTION:Fomalhaut is a nearby stellar system and has been found to be a
  triple based on astrometric observations. With new radial velocity and as
 trometric data\, we study the association between Fomalhaut A\, B\, and C 
 in a Bayesian framework\, finding that the system is gravitationally bound
  or at least associated. Based on simulations of the system\, we find that
  Fomalhaut C can be easily destabilized through combined perturbations fro
 m the Galactic tide and stellar encounters. Considering that observing the
  disruption of a triple is probably rare in the solar neighbourhood\, we c
 onclude that Fomalhaut C is a so-called ‘gravitational pair’ of Fomalhaut 
 A and B. Like the Cooper pair mechanism in superconductors\, this phenomen
 on only appears once the orbital energy of a component becomes comparable 
 with the energy fluctuations caused by the environment. Based on our simul
 ations\, we find (1) an upper limit of 8 km/s velocity difference is appro
 priate when selecting binary candidates\, and (2) an empirical formula for
  the escape radius\, which is more appropriate than tidal radius when meas
 uring the stability of wide binaries. https://astronomia.uc.cl/2jucext1/in
 stitutoastrofisica/en/instituto-2/seminars/event/361-understanding-fomalha
 ut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnet
 ism
DTSTART:20190823T171500Z
DTEND:20190823T174500Z
LOCATION:Seminar Room (Instituto de Astrofísica\, Pontificia Universidad Ca
 tólica\, Vicuña Mackenna 4860\, Santiago\, Chile)
SUMMARY:Understanding Fomalhaut as a Cooper pair (Dr. Fabo Feng\; Carnegie 
 Department of Terrestrial Magnetism)
URL:https://astronomia.uc.cl/2jucext1/institutoastrofisica/en/instituto-2/s
 eminars/event/361-understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-ca
 rnegie-department-of-terrestrial-magnetism
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