论文标题
$β$ pic的新外ocomets
New exocomets of $β$ Pic
论文作者
论文摘要
目标。我们工作的目的是分析苔丝最近在32、33和34中观察到的$β$ PIC的光曲线，以搜索外of骨transils的特征。方法。我们从桅杆数据库中处理$β$ PIC光曲线，应用频率分析以删除由于恒星的脉动而导致的谐波信号，并使用简单的1-D模型来符合发现事件的轮廓。结果。我们恢复了其他作者在5和6中发现的事件，并找到了五个新的不同的大街浸入事件，由于彗星样的身体跨过星盘，具有类似于预期曲线的不对称形状。这些倾角相当浅，通量下降的水平为0.03 \％，持续时间少于1天。在调查的部门中未发现周期性转移。结论。所识别的倾角的深度和持续时间与苔丝观察范围5的$β$ PIC光曲线中最近发现的转移以及在KIC 354116和KIC 1108472的光曲线中发现的趋势相似。这表明至少对于$β$ pic系统，上的浅凹陷不太可能是一种特殊现象。
Aims. The aim of our work is to analyze the light curves of $β$ Pic recently observed by TESS in sectors 32, 33, and 34, searching for the signatures of exocomet transits. Methods. We process the $β$ Pic light curves from the MAST database, applying the frequency analysis to remove harmonic signals due to the star's pulsations and use a simple 1-D model to fit the profiles of the found events. Results. We recover events previously found by other authors in sectors 5 and 6 and find five new distinct aperiodic dipping events with asymmetric shapes resembling the expected profiles due to the passage of a comet-like body across the star disk. These dips are rather shallow, with the flux drop at a level of 0.03\% and a duration of less than 1 day. No periodic transits were found in the sectors investigated. Conclusions. The depth and duration of the identified dips are similar to the recently discovered transits in the $β$ Pic light curves from sector 5 of the TESS observations as well as to those found in the light curves of KIC 354116 and KIC 1108472 from the Kepler database. It indicates that aperiodic shallow dips are not likely an exceptional phenomenon, at least for the $β$ Pic system.
