NOAO >   Observing Info >   Approved Programs >   2012B-0536

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Proposal Information for 2012B-0536


PI: Robert Siverd, Vanderbilt University, robert.j.siverd@vanderbilt.edu
Address: Physics Department, 6301 Stevenson Center Ln, Nashville, TN 37235, USA

CoI: Leslie Hebb, Vanderbilt University
CoI: Brian Jackson, Carnegie Dept. of Terrestrial Magnetism
CoI: Joshua Pepper, Vanderbilt University
CoI: Keivan Stassun, Vanderbilt University
CoI: Thomas Beatty, The Ohio State University
CoI: Scott Gaudi, The Ohio State University
CoI: Jian Ge, University of Florida

Title: Revealing the Origins and Fates of Hot Jupiters with Eccentric Eclipsing Binaries

Abstract: Hot Jupiters (HJs) are a puzzling class of exoplanet. Though many such systems have been observed, many questions remain regarding their origins and future evolution. It is believed that HJs form a few AU distant from their host stars. Either by rapid inward disk migration or orbital eccentricity changes (due to e.g., planet-planet scattering or Kozai oscillations), the pre-HJ is brought close to its host star. Tidal interactions may then either halt the inward migration or circularize the eccentric orbit, leaving HJs in the orbits we observe today. This process depends in detail on the efficiency of tidal dissipation (parameterized by Q_\star), which is largely unconstrained but thought to vary with frequency. Using a sample of unique, short- period, eccentric eclipsing binaries from the KELT transit survey, we intend to constrain this tidal dissipation parameter and thereby shed new light on the origins and fates of HJs.


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NOAO >   Observing Info >   Approved Programs >   2012B-0536

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