NOAO >   Observing Info >   Approved Programs >   2014B-0239

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Proposal Information for 2014B-0239


PI: Stephen Kane, San Francisco State University, skane@sfsu.edu
Address: Department of Physics & Astronomy, 1600 Holloway Avenue, San Francisco, CA 94132, USA

CoI: David Ciardi, California Institute of Technology
CoI: Steve Howell, NASA Ames
CoI: Andrew Howard, University of Hawaii
CoI: Jason Wright, Penn State University

Title: Searching for Wide-Binary Companions to Exoplanet Host Stars

Abstract: Though there are over 1,600 confirmed exoplanets known, the binarity of exoplanet host stars is not well understood. The host stars of planets detected using the radial velocity technique provide an excellent target sample from which to investigate the apparent discrepancy between stellar multiplicity of the exoplanet host stars and that of the general stellar population. Here we proposal to utilize the excellent resolving power of the Differential Speckle Survey Instrument on Gemini North to conduct such a survey of ~ 80 northern exoplanet host stars to search for stellar companions. The resolution will allow us to detect companions 8 magnitudes fainter with typical separations between 1 AU and 30-60 AU. This separation range encompasses the peak of the binary period distribution observed for G dwarfs in the solar neighborhood. The results from this survey will greatly inform the planet formation scenarios and exoplanet property correlations for these systems.


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NOAO >   Observing Info >   Approved Programs >   2014B-0239

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