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Exoplanets in the Antarctic Sky. I. The First Data Release of AST3-II (CHESPA) and New Found Variables within the Southern CVZ of TESS

文献类型：期刊论文

作者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
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2019-02-01
卷号240期号:2页码:32
ISSN号0067-0049
关键词binaries: eclipsing catalogs planets and satellites: detection stars: variables: general surveys techniques: photometric
DOI10.3847/1538-4365/aaec0c
通讯作者Zhang, Hui(huizhang@nju.edu.cn) ; Zhou, Ji-lin(zhoujl@nju.edu.cn)
英文摘要Located 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 (https://www.aavso.org/), 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.
WOS关键词POINT-SOURCE CATALOG ; DOME-C ; PHOTOMETRY ; PLANET ; SITE ; BRIGHTNESS ; PARAMETERS ; TELESCOPE ; ALGORITHM ; EARTH
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000456841400001
源URL[http://libir.pmo.ac.cn/handle/332002/19893]  
专题中国科学院紫金山天文台
通讯作者Zhang, Hui; Zhou, Ji-lin
作者单位1.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
推荐引用方式
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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