标题： 了解恒星，了解行星。 一、系外行星宿主恒星的自适应光学 显示英文标题

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

摘要： 自适应光学调查系外行星宿主恒星的伴星结果如下。 我们使用AEOS望远镜及其自适应光学系统，在$I$波段收集了恒星的深度图像。 观测了62颗系外行星宿主恒星，分辨出15个多重恒星系统。 其中8个是已知的多重恒星系统，另外7个是新的候选双星系统。 对于所有双星系统，我们测量了该对的相对天体测量学数据以及$I$波段的差分亮度。 我们改进了HD 19994和$\tau$Boo的轨道。 这些观测将提供关于系外行星宿主恒星多星性的改进统计数据，并增加对已知双星系统中系外行星动力学的理解。 显示英文摘要

摘要： 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.