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SUMMARY:A Transiting Extrasolar Ring System around the Substellar Companio
 n J1407b - Matthew Kenworthy (Leiden)
DTSTART:20150701T153000Z
DTEND:20150701T163000Z
UID:TALK58644@talks.cam.ac.uk
CONTACT:Dr B.-O. Demory
DESCRIPTION:All the giant planets in our Solar system have rings and moons
  in\norbit around them\, and act as a fossil record of their formation.\nD
 espite the large numbers of detected extrasolar planets\, though\, no\nSat
 urn-like rings have yet been observed.\n\nIn May 2007\, a young star (call
 ed J1407) underwent a complex series of\nfluctuations in brightness lastin
 g over two months. At one point\, the\nstar dimmed by over 95% over a few 
 hours. We have modelled this light curve as\na giant\, highly structured r
 ing system that is hundreds of times\nlarger than Saturn's rings orbiting 
 around an unseen substellar\nsecondary companion\, J1407b.\n\nThis is the 
 first detection of exorings around an astronomical object\noutside our Sol
 ar system\, and the structure of these rings suggests\nthe formation of mo
 ons around J1407b. I will talk about our model and\nthe potential for seei
 ng more of these eclipses in the future.
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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