NOAO >   Observing Info >   Approved Programs >   2010A-0066

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Proposal Information for 2010A-0066


PI: Jennifer Patience, University of Exeter, patience@astro.ex.ac.uk
Address: Astrophysics, School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL, United Kingdom

CoI: Robert De Rosa, University of Exeter
CoI: Christian Marois, Herzberg Institute of Astrophysics
CoI: Bruce Macintosh, Lawrence Livermore National Laboratory
CoI: James Graham, UC Berkeley
CoI: Inseok Song, University of Georgia
CoI: Rene Doyon, University of Montreal
CoI: Mike Bessell, Mount Stromlo Observatory

Title: Resolving the A-star Binary Population with Gemini AO

Abstract: We propose to conclude a search for companions to nearby young A-stars using the Altair AO system and the NIRI camera. The requested observations, supplemented by those previously obtained at Gemini-North and other AO-equipped observatories, will complete a volume limited (D < 75 pc) survey of A-type stars. The primary goals of this proposal are: (1) a systematic vetting of candidate targets for future high-contrast extreme AO planet searches, e.g. the Gemini Planet Imager (GPI), and (2) an investigation of A star binary properties. The results of this systematic survey will detail key binary statistics for A-stars, i.e. the frequency, mass ratio distribution and separation distribution, at a level previously measured only for later spectral types.


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NOAO >   Observing Info >   Approved Programs >   2010A-0066

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