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首页> 外文会议>Advances in Stellar Interferometry pt.2 >Detection and Mass Characterization of Terrestrial Planets in the Habitable Zone with SIM PlanetQuest
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Detection and Mass Characterization of Terrestrial Planets in the Habitable Zone with SIM PlanetQuest

机译：SIM PlanetQuest对可居住区域中的地球行星进行检测和质量表征

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摘要

SIM PlanetQuest is a space-borne Michelson interferometer with a nine meter baseline that will survey -200 stars within 30 parsecs for terrestrial mass planets. Ultra-precise astrometric observations will reveal the gravitational wobble of the target star (due to a planetary companion) against an inertial frame of reference stars located within a 1.5 degree radius. Here, we report the results of multiple Monte Carlo simulations which have modeled SIM's ability to detect and determine the orbital parameters and masses of the terrestrial mass planets around its potential sample of target stars. We find that SIM will detect 80% of the planets in the 60 star sample. Out of those planets SIM detects, we will be able to estimate the masses of at least 50% of the planets to 30%. Whether SIM should observer 60 or 240 stars, will be aided by the results of the Kepler mission which will provide statistics on the frequency of terrestrial-mass planets around solar type stars. By determining the orbital phase of the planet, SIM will be able to assist TPF-C by telling it when to look to ensure that the planet will be outside the TPF-C 62 mas inner working angle. Furthermore, the masses determined by SIM will not suffer from the msini ambiguity inherent in radial velocity surveys.
机译：SIM PlanetQuest是一个星载迈克尔逊干涉仪，基线为9米，它将对30毫秒之内的200颗恒星进行地球质量行星的测量。超精确的天文观测将揭示目标恒星（由于行星伴侣）相对于位于1.5度半径内的参考恒星惯性系的重力摆动。在这里，我们报告了多个蒙特卡洛模拟的结果，这些模拟模拟了SIM探测和确定其潜在目标恒星样本周围的地球质量行星的轨道参数和质量的能力。我们发现SIM可以检测60个恒星样本中80％的行星。 SIM卡检测到的这些行星中，我们将能够估计至少50％到30％的行星的质量。开普勒任务的结果将帮助SIM观测60颗或240颗恒星，该结果将提供有关太阳型恒星周围地球质量行星频率的统计数据。通过确定行星的轨道相位，SIM将能够告诉TPF-C何时寻找以确保行星位于TPF-C 62 mas内部工作角度之外，从而为TPF-C提供帮助。此外，由SIM确定的质量将不会受到径向速度测量中固有的msini模糊性的影响。

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