NOAO >   Observing Info >   Approved Programs >   2013A-0280

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Proposal Information for 2013A-0280


PI: Samuel Quinn, Georgia State University, quinn@chara.gsu.edu
Address: Department of Physics and Astronomy, Atlanta, GA, 30303, USA

CoI: Russel White, Georgia State University
CoI: Lars Buchhave, Niels Bohr Institute, University of Copenhagen
CoI: Deepak Raghavan, Georgia State University

Title: Close visual companions to transiting exoplanet host stars

Abstract: We propose to complete the northern sample of our high resolution imaging survey of transiting planet host stars to identify spatially close companions. Recent results have demonstrated that unresolved stellar companions (physical or visual) to transiting planet host stars can dramatically affect the calculated planetary masses and radii, potentially leading to biases in our understanding of their composition and formation. This survey will also provide a more complete assessment of the frequency of planets in binary star systems, the results of which are important for determining the total number of planets in the galaxy. At the median distance to these stars, the peak of the binary separation distribution is below typical seeing limits, so employing adaptive optics is essential to achieving these goals.


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NOAO >   Observing Info >   Approved Programs >   2013A-0280

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