引力透镜事件中的轨道运动
Orbital Motion During Gravitational Lensing Events
摘要：
引力透镜事件为发现和研究行星系和双星提供了独特的机会。在这里，我们建立在以前的工作，探索轨道运动可以发挥的作用，在识别和学习更多关于多质量系统，作为引力透镜。我们发现，一个显着的比例的行星透镜和二元透镜的光变曲线的轨道运动的影响。此外，轨道运动的影响扩大了可以发现和研究透镜多重性的双星的范围。轨道运动将发挥越来越重要的作用，因为开普勒、凌日系外行星勘测卫星（TESS）和WFIRST等空间飞行任务所进行的灵敏测光观测发现了引力透镜事件。同样，GAIA实现的出色天体测量将使其能够研究轨道运动的影响。频繁的观测，如利用韩国微透镜望远镜网络KMTNet进行的观测，也将有助于研究引力透镜事件期间的轨道运动。最后，轨道运动通常在透镜事件的特征中起着重要的作用，在透镜事件中，可以预测特定的邻近恒星在背景恒星前面的通过。
英文摘要：
Gravitational lensing events provide unique opportunities to discover and study planetary systems and binaries. Here we build on previous work to explore the role that orbital motion can play in both identifying and learning more about multiple-mass systems that serve as gravitational lenses. We find that a significant fraction of planet-lens and binary-lens light curves are influenced by orbital motion. Furthermore, the effects of orbital motion extend the range of binaries for which lens multiplicity can be discovered and studied. Orbital motion will play an increasingly important role as observations with sensitive photometry, such as those made by the space missions Kepler, Transiting Exoplanet Survey Satellite, (TESS), and WFIRST discover gravitational lensing events. Similarly, the excellent astrometric measurements made possible by GAIA will allow it to study the effects of orbital motion. Frequent observations, such as those made possible with the Korean Microlensing Telescope Network, KMTNet, will also facilitate the study of orbital motion during gravitational lensing events. Finally, orbital motion will typically play a significant role in the characteristics of lensing events in which the passage of a specific nearby star in front of a background star can be predicted.
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