A Survey of Nearby Stars for Extrasolar Planets

史蒂文·沃格特：“太阳系外行星附近恒星的观测”，AST-9988358。沃格特正在继续非常成功地寻找附近恒星(系外行星)周围的巨型行星。大约1000颗主序恒星正在被监测，以寻找由行星伴星的引力扰动造成的微小速度变化(~2-3米/秒)。系外行星调查主要是利用Keck I望远镜上的HiRes光谱仪进行的，并辅之以在Lick天文台进行的观测。在该项目的持续时间里，大约12年，将有可能探测到地球距离太阳五倍以上的木星和土星的类似物。该项目的主要目标包括：(1)我们的太阳系是典型的还是独一无二的？(2)系外行星的频率和物理特征是什么？(3)位于近圆形轨道上的遥远的巨行星是宜居带存在类地行星的先决条件吗？该项目的资金由美国国家科学基金会恒星天文与天体物理学计划(AST/SAA)提供。

Vogt, Steven"A Survey of Nearby Stars for Extrasolar Planets"AST-9988358Dr. Vogt is continuing a very successful search for giant planets around nearby stars (exoplanets). Approximately 1000 main-sequence stars are being monitored for small velocity variations (~2-3 m/sec) imposed by the gravitational perturbations by planetary companions. The exoplanet survey is being conducted primarily with the HIRES spectrometer on the Keck I telescope, supplemented by observations conducted at Lick Observatory. Over the duration of the project, ~12 years, it will be possible to detect Jupiter and Saturn analogs beyond five times the Earth's distance from the Sun. The main goals of the project include: (1) Is our solar system typical or unique? (2) What are the frequency and physical characteristics of exoplanets? (3) Are distant giant planets in nearly circular orbits a prerequisite for the existence of terrestrial planets in the habitable zone?Funding for this project was provided by the NSF program for Stellar Astronomy & Astrophysics (AST/SAA).***