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

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,...

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Bibliographic Details
Main Authors: Liang, En-Si, Wang, Songhu, Zhou, Ji-Lin, Zhou, Xu, Zhang, Hui, Xie, Jiwei, Liu, Huigen, Wang, Lifan, Ashley, M. C. B.
Format: Text
Language:unknown
Published: arXiv 2016
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Online Access:https://dx.doi.org/10.48550/arxiv.1608.07904
https://arxiv.org/abs/1608.07904
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Summary: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. : Accepted for publication in AJ. 8 pages, 9 figures