Know the Star, Know the Planet. I. Adaptive Optics of Exoplanet Host Stars

Details Know the Star, Know the Planet. I. Adaptive Optics of Exoplanet Host Stars Know the Star, Know the Planet. I. Adaptive Optics of Exoplanet Host Stars

2011-09-20

arxiv.org/abs/1109.4320v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Accepted to Astronomical Journal

Scientific paper

The results of an adaptive optics survey of exoplanet host stars for stellar companions is presented. We used the AEOS Telescope and its adaptive optics system to collect deep images of the stars in $I$-band. Sixty-two exoplanet host stars were observed and fifteen multiple star systems were resolved. Of these eight are known multiples, while seven are new candidate binaries. For all binaries, we measured the relative astrometry of the pair and the differential magnitude in $I$-band. We improved the orbits of HD 19994 and $\tau$ Boo. These observations will provide improved statistics on the duplicity of exoplanet hosts stars and provide an increased understanding of the dynamics of known binary star exoplanet hosts.

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