Exoplanets in the Antarctic Sky. I. The First Data Release of AST3-II (CHESPA) and New Found Variables within the Southern CVZ of TESS
Zhang, Hui1; Yu, Zhouyi1; Liang, Ensi1; Yang, Ming1; Ashley, Michael C. B.2; Cui, Xiangqun3,4; Du, Fujia3,4; Fu, Jianning5; Gong, Xuefei3,4; Gu, Bozhong3,4; Hu, Yi4,6; Jiang, Peng4,7; Liu, Huigen1; Lawrence, Jon8; Liu, Qiang6; Li, Xiaoyan3,4; Li, Zhengyang3,4; Ma, Bin4,6,9; Mould, Jeremy10,11; Shang, Zhaohui4,6,12; Suntzeff, Nicholas B.13; Tao, Charling14,15,16; Tian, Qiguo17; Tinney, C. G.18; Uddin, Syed A.19; Wang, Lifan4,13,19; Wang, Songhu20; Wang, Xiaofeng15,16; Wei, Peng1; Wright, Duncan21; Wu, Xuefeng4,19; Wittenmyer, Robert A.21; Xu, Lingzhe3; Yang, Shi-hai3,4; Yu, Ce22; Yuan, Xiangyan3,4; Zheng, Jessica3,23; Zhou, Hongyan17; Zhou, Ji-lin1; Zhu, Zhenxi4,19
Corresponding AuthorZhang, Hui( ; Zhou, Ji-lin(
AbstractLocated at Dome A, the highest point of the Antarctic plateau, the Chinese Kunlun station is considered to be one of the best ground-based photometric sites because of its extremely cold, dry, and stable atmosphere. A target can be monitored from there for over 40 days without diurnal interruption during a polar winter. This makes Kunlun station a perfect site to search for short-period transiting exoplanets. Since 2008, an observatory has existed at Kunlun station, and three telescopes are working there. Using these telescopes, the AST3 project has been carried out over the last 6 yr with a search for transiting exoplanets as one of its key programs (CHESPA). In the austral winters of 2016 and 2017, a set of target fields in the southern continuous viewing zone (CVZ) of TESS were monitored by the AST3-II telescope. In this paper, we introduce the CHESPA and present the first data release containing photometry of 26,578 bright stars (m(i) <= 15). The best photometric precision at the optimum magnitude for the survey is around 2 mmag. To demonstrate the data quality, we also present a catalog of 221 variables with a brightness variation greater than 5 mmag from the 2016 data. Among these variables, 179 are newly identified periodic variables not listed in the AAVSO database (, and 67 are listed in the Candidate Target List. These variables will require careful attention to avoid false-positive signals when searching for transiting exoplanets. Dozens of new transiting exoplanet candidates will be released in a subsequent paper.
Keywordbinaries: eclipsing catalogs planets and satellites: detection stars: variables: general surveys techniques: photometric
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000456841400001
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorZhang, Hui; Zhou, Ji-lin
Affiliation1.Nanjing Univ, Minist Educ, Sch Astron & Space Sci, Key Lab Modern Astron & Astrophys, Nanjing 210023, Jiangsu, Peoples R China
2.Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia
3.Nanjing Inst Astron Opt & Technol, Nanjing 210042, Jiangsu, Peoples R China
4.Chinese Ctr Antarctic Astron, 451 Jinqiao Rd, Nanjing 210008, Jiangsu, Peoples R China
5.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
6.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
7.Polar Res Inst China, Shanghai 200136, Peoples R China
8.Macquarie Univ, Australian Astron Opt, N Ryde, NSW 2109, Australia
9.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
10.Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218,Mail H29, Hawthorn, Vic 3122, Australia
11.ARC Ctr Excellence All Sky Astrophys CAASTRO, Sydney, NSW, Australia
12.Tianjin Normal Univ, Tianjin Astrophys Ctr, Tianjin 300387, Peoples R China
13.Texas A&M Univ, Dept Phys & Astron, George P & Cynthia Woods Mitchell Inst Fundamenta, 4242 TAMU, College Stn, TX 77843 USA
14.Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France
15.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China
16.Tsinghua Univ, Tsinghua Ctr Astrophys THCA, Beijing 100084, Peoples R China
17.Polar Res Inst China, 451 Jinqiao Rd, Shanghai 200136, Peoples R China
18.UNSW, Sch Phys, Exoplanetary Sci, Unsw Sydney, NSW 2052, Australia
19.Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
20.Yale Univ, Dept Astron, New Haven, CT 06511 USA
21.Univ Southern Queensland, Computat Engn & Sci Res Ctr, Toowoomba, Qld 4350, Australia
22.Tianjin Univ, Sch Comp Sci & Technol, Tianjin 300072, Peoples R China
23.Australian Astron Observ, 105 Delhi Rd, N Ryde, NSW 2113, Australia
Recommended Citation
GB/T 7714
Zhang, Hui,Yu, Zhouyi,Liang, Ensi,et al. Exoplanets in the Antarctic Sky. I. The First Data Release of AST3-II (CHESPA) and New Found Variables within the Southern CVZ of TESS[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2019,240(2):32.
APA Zhang, Hui.,Yu, Zhouyi.,Liang, Ensi.,Yang, Ming.,Ashley, Michael C. B..,...&Zhu, Zhenxi.(2019).Exoplanets in the Antarctic Sky. I. The First Data Release of AST3-II (CHESPA) and New Found Variables within the Southern CVZ of TESS.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,240(2),32.
MLA Zhang, Hui,et al."Exoplanets in the Antarctic Sky. I. The First Data Release of AST3-II (CHESPA) and New Found Variables within the Southern CVZ of TESS".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 240.2(2019):32.
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