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SUMMARY:Planetary system architecture from planet-planet and planetesimal 
 scattering - Armitage\, P (Colorado)
DTSTART:20090820T084000Z
DTEND:20090820T090000Z
UID:TALK19471@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Direct imaging searches for exoplanets are sensitive to wide o
 rbit planets and provide complementary information on the exoplanet popula
 tion compared to indirect detection techniques. Recent high-contrast imagi
 ng has revealed a multiple planet system orbiting the young\, dusty A-star
  HR 8799. The three planets are located projected separations of 24-68 AU 
 and have masses estimated to be 7-10 times the mass of Jupiter. The discov
 ery of massive planets at the orbital radii around HR 8799 system and othe
 r recently imaged exoplanets present important test cases for models of pl
 anet formation and evolution. Ongoing imaging surveys and upcoming instrum
 ent projects will further characterize the population of outer giant plane
 ts.
LOCATION:Seminar Room 1 Newton Institute
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