论文标题
年轻的明星在过渡系外行星恢复（年轻人）中脱落 - I.在苔丝全帧图1-5中寻找年轻系外行星的搜索
YOUNG Star detrending for Transiting Exoplanet Recovery (YOUNGSTER) -- I. A search for young exoplanets in Sectors 1-5 of the TESS Full-Frame-Images
论文作者
论文摘要
Young（<1GYR）系外行星代表了系外行星研究的一个至关重要的领域，因为他们提供了学习超球星系的形成和早期动态历史的机会。然而，由于其年轻的宿主星的快速旋转和复杂的活性，发现年轻的系外行星显着复杂，这些宿主星的快速旋转和复杂的活动通常无法通过最新的自动管道来很好地处理。 This work presents an alternative LOWESS-based pipeline focused specifically on detrending young stellar light-curves from the 30min-cadence Full Frame Images (FFIs) produced by the Transiting Exoplanet Survey Satellite ($TESS$), and includes improvements such as automatic peak-cutting of stellar variability and interpolation over masked transits to improve periodogram visibility and returned transit shapes.这项工作介绍了开发的管道的细节，以及其在$ TESS $数据的1-5扇区中恒星协会中的年轻恒星的最初结果。尽管在这项工作中没有发现新的系外行星候选信号，但有趣的结果包括仅从30分钟的数据中恢复了1-5个幼体周围的所有已知2分钟TOIS，幼小的系外型TUC AB的恢复，许多年轻的Eclips eclips binaries and eclips binaries and tuck tuc。还为每个恒星进行了灵敏度分析，显示了注射行星的恢复如何随着每个目标的深度和周期而变化。讨论了对年轻系外行星的未来搜索挑战，最大的是恒星旋转，周期少于1天，并且缺乏大量确认的年轻恒星样本。
Young (<1Gyr) exoplanets represent a critically important area of exoplanet research, as they offer the opportunity to learn about the formation and early dynamic history of exoplanetary systems. However, finding young exoplanets is significantly complicated by the fast rotation and complex activity of their young host stars, which are often not well handled by state-of-the-art automatic pipelines. This work presents an alternative LOWESS-based pipeline focused specifically on detrending young stellar light-curves from the 30min-cadence Full Frame Images (FFIs) produced by the Transiting Exoplanet Survey Satellite ($TESS$), and includes improvements such as automatic peak-cutting of stellar variability and interpolation over masked transits to improve periodogram visibility and returned transit shapes. This work presents the details of the developed pipeline, along with initial results from its application to young stars within stellar associations in sectors 1-5 of the $TESS$ data. While no new exoplanet candidate signals were found in this work, interesting results included the recovery of all known 2min TOIs around young stars in sectors 1-5 from 30min data alone, the recovery of the young exoplanet DS Tuc Ab, a number of young eclipsing binaries and a wide array of interesting rotation. A sensitivity analysis was also undertaken for each star, showing how recovery of injected planets varied with both depth and period for each individual target. Challenges for future searches for young exoplanets are discussed, the largest being stellar rotation with periods less than 1 day and a lack of a large sample of confirmed young stars.
