arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1608.07904astro-ph.SR
收藏

CSTAR场中的恒星耀斑:来自2008年数据集的结果

Stellar Flares in the CSTAR Field: Results from the 2008 Data Set

En-Si Liang, Songhu Wang, Ji-Lin Zhou, Xu Zhou, Hui Zhang, Jiwei Xie, Huigen Liu, Lifan Wang, M. C. B. Ashley

摘要:

中国小望远镜阵列(CSTAR)是第一个放置在南极洲的中国天文仪器。它是一组四个相同的全自动$14.5\,\rm{cm}$望远镜,视场(FOV)为$20\,\rm{deg^2}$,以南天极为中心。CSTAR位于南极Dome A,旨在为现场监测和可变源探测提供高节奏测光。在2008年观测季节,CSTAR拍摄了南天极周围18,145颗恒星的高精度光度数据。在$i\,=\,7.5$和$12$,测光精度分别达到$\sim 8$ mmag和$\sim 30$ mmag,节奏为20 s或30 s。利用稳健探测方法,我们在13个源上发现了15个耀斑,其中包括两个分类变量。我们还发现,恒星耀斑的衰变时间与总持续时间呈线性关系。所有检测到的耀斑的细节以及它们的恒星属性在这项工作中。

英文摘要:

The Chinese Small Telescope ARray (CSTAR) is the first Chinese astronomical instrument placed in Antarctica. It is a group of four identical, fully automatic $14.5\,\rm{cm}$ telescopes, with an field of view (FOV) of $20\,\rm{deg^2}$ centered on the South Celestial Pole. Placed at Antarctic Dome A, CSTAR is designed to provide high-cadence photometry for site monitoring and variable sources detection. During the 2008 observing season, CSTAR has taken high-precision photometric data for 18,145 stars around the South Celestial Pole. At $i\,=\,7.5$ and $12$, the photometric precision reaches $\sim 8$ mmag and $\sim 30$ mmag with a cadence of 20s or 30s, respectively. Using robust detection method, we have found 15 stellar flares on 13 sources, including two classified variables. We have also found a linear relation between the decay times and the total durations of the stellar flares. The details of all detected flares along with their stellar properties are presented in this work.

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。

↑