Antonino Lanza (INAF, Catania Astrophysical Observatory)

Interactions between late-type stars and close-in planets
When Oct 10, 2014 from 10:30 AM to 12:00 PM
What
  • Colloquium
Where SH, Lecture Hall
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Late-type stars have outer convection zones where hydromagnetic dynamo action can develop and tides can effectively dissipate kinetic energy.  Therefore, close-in planets can interact with stellar magnetic fields, while their orbital evolution is ruled by  tides and planet-planet gravitational interactions in systems with more than one planet. I shall introduce some selected observations that can provide information on the magnetic or tidal interactions  between planets closer than about 0.1 AU and their host stars. Then I discuss some models proposed to account for those observations.