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URL:https://murmitoyen.com/events/vanille/udem/detail/640381-the-energy-bal
 ance-of-short-period-planets-nicolas-cowan-mcgill-university
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:The Energy Balance of Short-Period Planets - Nicolas Cowan (McGill 
 University)
DESCRIPTION:The Energy Balance of Short-Period Planets - Nicolas Cowan (McG
 ill University)
\n 
\nMost planetary systems do not resemble ours. Nature
  likes to produce planets between the sizes of Earth and Neptune\, but loc
 ated interior to Mercury's orbit. Since we have no analogs to these worlds
  in our Solar System\, and since we do not yet have robust predictive mode
 ls of planetary climate\, we must observe them in order to understand thei
 r atmospheric composition\, cloud formation\, and winds patterns. By monit
 oring infrared emission as a function of orbital phase\, we can infer a pl
 anet's Bond albedo\, the efficiency of its day-night heat transport\, and\
 , in the case of planets subject to seasons\, its thermal inertia. Multi-w
 avelength emission measurements also constrain atmospheric composition and
  vertical temperature structure. Such
\ninferences are particularly sensit
 ive to the uncertainty in emission measurements\, however\, and the accura
 cy of eclipse measurements has typically been over-stated. Fortunately\, i
 mproved analysis techniques and next-generation instruments should allow u
 s to resolve outstanding questions about hot Jupiters\, and to extend our 
 methods to temperate terrestrial planets.
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