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SUMMARY:Exploiting the accuracy of Kepler : Discovery of the hottest and l
 argest exoplanet - Dimitris  Mislis
DTSTART:20111026T124500Z
DTEND:20111026T131500Z
UID:TALK33156@talks.cam.ac.uk
CONTACT:Ben Davies
DESCRIPTION:We present a new approach to determine the parameters of trans
 iting extrasolar planetary systems using photometric light curves (LCs). A
 n analysis that combines a treatment of various phenomena in high-accuracy
  LCs allows a derivation of orbital and physical parameters. Our method co
 nsiders the primary transit\, the secondary eclipses\, and the overall pha
 se shape of a LC between the occultations. Phase variations are induced by
  reflected and thermally emitted light from the planet. Moreover\, the ell
 ipsoidal shape of the star due to the gravitational pull from the planet i
 nduce phase variations. As we find\, the complete decipherment of LCs yiel
 ds information about the planetary mass\, orbital eccentricity\, orientati
 on of periastron\, and the planet’s albedo. Furthermore\, we present the
  analysis of a Kepler candidate exoplanet system. Using the LC from Kepler
  mission\, we have found ellipsoidal variations due to tidal forces (star-
 planet)\, thermal emission from the planet and possible signature due to p
 lanetary reflected light. The analysis has shown that the system is a hot 
 Jupiter with mass MP = 1.20MJ. Because the high temperature of the host st
 ar (SP = A0V \, Teff = 8848oK)\, the exoplanet becomes one of the hottest 
 exoplanets\, with strong thermal emission (Tp = 3341.5o K ). Except ellips
 oidal variations and thermal emission\, a weak reflected light component i
 s also present in the LC. 
LOCATION:Sackler Lecture Theatre\, IoA
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