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arXiv · 2302.06997

Data Release of the AST3-2 Automatic Survey from Dome A, Antarctica

Xu Yang·Yi Hu·Zhaohui Shang·Bin Ma·Michael C. B. Ashley·Xiangqun Cui·Fujia Du·Jianning Fu·Xuefei Gong·Bozhong Gu·Peng Jiang·Xiaoyan Li·Zhengyang Li·Charling Tao·Lifan Wang·Lingzhe Xu·Shi-hai Yang·Ce Yu·Xiangyan Yuan·Ji-lin Zhou·Zhenxi Zhu
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Abstract

AST3-2 is the second of the three Antarctic Survey Telescopes, aimed at wide-field time-domain optical astronomy. It is located at Dome A, Antarctica, which is by many measures the best optical astronomy site on the Earth's surface. Here we present the data from the AST3-2 automatic survey in 2016 and the photometry results. The median 5$\sigma$ limiting magnitude in $i$-band is 17.8 mag and the light curve precision is 4 mmag for bright stars. The data release includes photometry for over 7~million stars, from which over 3,500 variable stars were detected, with 70 of them newly discovered. We classify these new variables into different types by combining their light curve features with stellar properties from surveys such as StarHorse.

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Xu Yang, Yi Hu, Zhaohui Shang, Bin Ma, Michael C. B. Ashley, Xiangqun Cui, Fujia Du, Jianning Fu, Xuefei Gong, Bozhong Gu, Peng Jiang, Xiaoyan Li, Zhengyang Li, Charling Tao, Lifan Wang, Lingzhe Xu, Shi-hai Yang, Ce Yu, Xiangyan Yuan, Ji-lin Zhou, Zhenxi Zhu. 2023-02-14. Data Release of the AST3-2 Automatic Survey from Dome A, Antarctica. https://doi.org/10.1093/mnras/stad498

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