文章基本信息

标题：Exoplanets in the Antarctic Sky. III. Stellar Flares Found by AST3-II (CHESPA) within the Southern CVZ of TESS
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作者：En-Si Liang ; Hui Zhang (张辉) ; Zhouyi Yu 等
期刊名称：The Astronomical journal
印刷版ISSN：0004-6256
电子版ISSN：1538-3881
出版年度：2020
卷号：159
期号：5
页码：2798-2809
DOI：10.3847/1538-3881/ab7ea8
语种：English
出版社：American Institute of Physics
摘要：The CHinense Exoplanet Searching Program from Antarctica is a ground-based wide-field photometric survey using the AST3 and CSTAR telescopes located at Dome A, Antarctica.Blessed with the unparalleled observing conditions on the highest point of the Antarctic plateau, three remotely controlled, fully automatic telescopes (AST3-I, AST3-II, and CSTAR-II) carried out continuous high-precision photometric surveys through the polar nights of 2016 and 2017.During the observing seasons of 2016, a total of 26,578 light curves were obtained for stars within the area of the southern continuous viewing zone of TESS, covering an i-band magnitude range from 7.5 to 15.At mi = 10, photometric precision reaches ~2 mmag, allowing possible discoveries of sub-Jupiter-size exoplanets.Here we report 20 stellar flares with i-band energies larger than 1034 erg detected in the 2016 data set of AST3-II, all from different sources.We model the stellar flares and calculate the durations, amplitudes, energies, and skewnesses.The flare properties and the stellar properties of their sources are presented in this work.
关键词：Stellar flares;Photometry;Astrostatistics;Stellar activity;Astronomy data analysis;Surveys