Data Release of the AST3-2 Automatic Survey from Dome A, Antarctica. (arXiv:2302.06997v1 [astro-ph.SR])

Data Release of the AST3-2 Automatic Survey from Dome A, Antarctica. (arXiv:2302.06997v1 [astro-ph.SR])
<a href="http://arxiv.org/find/astro-ph/1/au:+Yang_X/0/1/0/all/0/1">Xu Yang</a> (1 and 2), <a href="http://arxiv.org/find/astro-ph/1/au:+Hu_Y/0/1/0/all/0/1">Yi Hu</a> (1), <a href="http://arxiv.org/find/astro-ph/1/au:+Shang_Z/0/1/0/all/0/1">Zhaohui Shang</a> (1), <a href="http://arxiv.org/find/astro-ph/1/au:+Ma_B/0/1/0/all/0/1">Bin Ma</a> (3), <a href="http://arxiv.org/find/astro-ph/1/au:+Ashley_M/0/1/0/all/0/1">Michael C.B. Ashley</a> (4), <a href="http://arxiv.org/find/astro-ph/1/au:+Cui_X/0/1/0/all/0/1">Xiangqun Cui</a> (5 and 6), <a href="http://arxiv.org/find/astro-ph/1/au:+Du_F/0/1/0/all/0/1">Fujia Du</a> (5 and 6), <a href="http://arxiv.org/find/astro-ph/1/au:+Fu_J/0/1/0/all/0/1">Jianning Fu</a> (7), <a href="http://arxiv.org/find/astro-ph/1/au:+Gong_X/0/1/0/all/0/1">Xuefei Gong</a> (5 and 6), <a href="http://arxiv.org/find/astro-ph/1/au:+Gu_B/0/1/0/all/0/1">Bozhong Gu</a> (5 and 6), <a href="http://arxiv.org/find/astro-ph/1/au:+Jiang_P/0/1/0/all/0/1">Peng Jiang</a> (6 and 8), <a href="http://arxiv.org/find/astro-ph/1/au:+Li_X/0/1/0/all/0/1">Xiaoyan Li</a> (5 and 6), <a href="http://arxiv.org/find/astro-ph/1/au:+Li_Z/0/1/0/all/0/1">Zhengyang Li</a> (5 and 6), <a href="http://arxiv.org/find/astro-ph/1/au:+Tao_C/0/1/0/all/0/1">Charling Tao</a> (9 and 10), <a href="http://arxiv.org/find/astro-ph/1/au:+Wang_L/0/1/0/all/0/1">Lifan Wang</a> (6, 11 and 12), <a href="http://arxiv.org/find/astro-ph/1/au:+Xu_L/0/1/0/all/0/1">Lingzhe Xu</a> (5), <a href="http://arxiv.org/find/astro-ph/1/au:+Yang_S/0/1/0/all/0/1">Shi-hai Yang</a> (5 and 6), <a href="http://arxiv.org/find/astro-ph/1/au:+Yu_C/0/1/0/all/0/1">Ce Yu</a> (13), <a href="http://arxiv.org/find/astro-ph/1/au:+Yuan_X/0/1/0/all/0/1">Xiangyan Yuan</a> (5 and 6), <a href="http://arxiv.org/find/astro-ph/1/au:+Zhou_J/0/1/0/all/0/1">Ji-lin Zhou</a> (14), <a href="http://arxiv.org/find/astro-ph/1/au:+Zhu_Z/0/1/0/all/0/1">Zhenxi Zhu</a> (6 and 12) ( (1) National Astronomical Observatories, Chinese Academy of Sciences, (2) University of Chinese Academy of Sciences, Beijing 100049, China, (3) School of Physics and Astronomy, Sun Yat-Sen University, (4) School of Physics, University of New South Wales, (5) Nanjing Institute of Astronomical Optics and Technology, (6) Chinese Center for Antarctic Astronomy, (7) Department of Astronomy, Beijing Normal University, (8) Key Laboratory for Polar Science, MNR, Polar Research Institute of China, (9) Aix Marseille Univ., (10) Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, (11) Department of Physics and Astronomy, Texas A&M University, (12) Purple Mountain Observatory, Chinese Academy of Sciences, (13) College of Intelligence and Computing, Tianjin University, (14) School of Astronomy and Space Science, Nanjing University)

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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