强视向速度测量发现孪生地球的可行性
On the Feasibility of Intense Radial Velocity Surveys for Earth-twin Discoveries
摘要：
这项工作评估了下一代高精度径向速度（RV）仪器用于地球孪生系外行星探测的潜在能力。从数据采样重要性的角度来看，Terra Hunting Experiment旨在通过全新的HARPS3仪器，在精心选择的目标列表上，通过长基线进行一系列密集的夜间RV观测来实现这一目标。本文描述了生成和处理这些数据的端到端模拟，以帮助我们更好地了解未表征的恒星噪声对轨道周期为数月的地球质量行星的恢复的影响。我们考虑完整的开普勒系统，现实模拟恒星噪声，仪器白噪声，和特定位置的天气类型为我们的观测时间表。我们使用贝叶斯统计来评估各种行星模型拟合的合成数据，并比较成功的行星恢复的Terra狩猎实验时间表与典型的参考调查。我们发现，Terra Hunting实验可以在太阳型恒星的宜居带、单行星和多行星系统以及存在恒星信号的情况下探测到地球孪生子。此外，它比一个典型的参考调查恢复参数的准确性，它执行一个不间断的天基时间表。
英文摘要：
This work assesses the potential capability of the next generation of high-precision Radial Velocity (RV) instruments for Earth-twin exoplanet detection. From the perspective of the importance of data sampling, the Terra Hunting Experiment aims to do this through an intense series of nightly RV observations over a long baseline on a carefully selected target list, via the brand-new instrument HARPS3. This paper describes an end-to-end simulation of generating and processing such data to help us better understand the impact of uncharacterised stellar noise in the recovery of Earth-mass planets with orbital periods of the order of many months. We consider full Keplerian systems, realistic simulated stellar noise, instrument white noise, and location-specific weather patterns for our observation schedules. We use Bayesian statistics to assess various planetary models fitted to the synthetic data, and compare the successful planet recovery of the Terra Hunting Experiment schedule with a typical reference survey. We find that the Terra Hunting Experiment can detect Earth-twins in the habitable zones of solar-type stars, in single and multi-planet systems, and in the presence of stellar signals. Also that it out-performs a typical reference survey on accuracy of recovered parameters, and that it performs comparably to an uninterrupted space-based schedule.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
