Resolving the A Star Binary Population with Gemini AO

Details Resolving the A Star Binary Population with Gemini AO Resolving the A Star Binary Population with Gemini AO

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008noao.prop..182p&link_type=abstract

NOAO Proposal ID #2008A-0182

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Scientific paper

With the Altair AO system, we propose to conduct a complete, volume-limited companion search around young (<700Myr), nearby (D<75pc) A stars. The main goals of the proposed program are: (1) an investigation of A star binary properties and (2) a systematic vetting of candidate targets for future Gemini high-contrast AO planet searches. Results from the proposed survey will detail key binary statistics ? the frequency, mass ratio distribution, and separation distribution ? at a level previously only measured for later spectral types. The systems newly-resolved by Gemini will provide a comprehensive data set to investigate the binary formation process and its possible impact on planet fomation. Equally important are the unresolved single stars which will form a core sample for future Gemini Planet Imager (GPI) exoplanet search. The GPI instrument will be the first capable of detecting giant planets around a large sample of A stars. (resubmission fixes several confusing typos)

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