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Exoplanets in the Antarctic Sky. IV. Dual-band Photometry of Variables Found by the CSTAR-II Commissioning Survey at the North Sky
Zhu, Jiapeng1; Zhang, Hui1; Liang, En-Si1; Yu, Zhouyi1; Yang, Ming1; Zhou, Ji-lin1; Cui, Xiangqun2,3; Du, Fujia2,3; Gong, Xuefei2,3; Gu, Bozhong2,3; Hu, Lei4; Jiang, Peng5; Liu, Huigen1; Li, Xiaoyan2,3; Li, Zhengyang2,3; Mould, Jeremy6,7; Sun, Tianrui4; Suntzeff, Nicholas B.8; Tao, Charling9,10,11; Tian, Qiguo5; Uddin, Syed A.12; Wang, Lifan3,4,8; Wang, Songhu13; Wang, Xiaofeng10,11; Wei, Peng1; Wright, Duncan14; Wittenmyer, Robert A.14; Xu, Lingzhe2; Yang, Shihai2,3; Yuan, Xiangyan2,3; Zhou, Hongyan5; Zhu, Zhenxi3,4; Lu, Hongke15
2020-04-01
Source PublicationASTRONOMICAL JOURNAL
ISSN0004-6256
Volume159Issue:4Pages:18
Corresponding AuthorZhang, Hui(huizhang@nju.edu.cn)
AbstractFrom the experiences learned in three decades of exoplanet search, wide-field transit surveys have proven to be one of the most effective ways to detect exoplanets. Wide field of view, however, suffers from high false-positive rates caused by blended eclipsing binaries. The chromaticity in eclipse depth is an effective feature to distinguish low-depth eclipsing binaries from transiting exoplanets, making multiple-band photometry follow-up advantageous before a target is passed onto more expensive spectroscopic follow-up. Moreover, a multiple-band photometric survey is itself a powerful method to find and vet planetary candidates and narrow down the candidate list of high-priority targets. In this work, we report the first results of a dual-band (Sloan-g and -i) wide-field photometry survey-the Chinese Small Telescope ARray II (CSTAR-II), an updated version of the original CSTAR. As a key component of the Chinese Exoplanet Searching Program from Antarctica, CSTAR-II has been tested thoroughly at a remote arctic site near Mohe during the winter of 2014. In total, 13,531 light curves with the best overall photometric precision of similar to 3 mmag were extracted from 7721 stars in the Sloan-g and -i bands. Using a robust method, we have detected 63 variables, of which 48 are newly discovered. The dual-band photometric results as well as the stellar properties of the detected sources are provided in this work.
KeywordEclipsing binary stars Pulsating variable stars Surveys Multi-color photometry
DOI10.3847/1538-3881/ab7449
WOS KeywordRR LYRAE STARS ; KEPLER PLANET CANDIDATES ; POINT-SOURCE CATALOG ; OGLE COLLECTION ; 1ST RELEASE ; DOME ; ALGORITHM ; PHASE ; SITE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000522442800001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/35896
Collection中国科学院紫金山天文台
Corresponding AuthorZhang, Hui
Affiliation1.Nanjing Univ, Sch Astron & Space Sci, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Jiangsu, Peoples R China
2.Nanjing Inst Astron Opt & Technol, Nanjing 210042, Peoples R China
3.Chinese Ctr Antarctic Astron, Nanjing 210008, Peoples R China
4.Purple Mt Observ, Nanjing 210008, Peoples R China
5.Polar Res Inst China, Shanghai 200136, Peoples R China
6.Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218,Mail H29, Hawthorn, Vic 3122, Australia
7.ARC Ctr Excellence All Sky Astrophys CAASTRO, Sydney, NSW, Australia
8.Texas A&M Univ, Dept Phys & Astron, George P & Cynthia Woods Mitchell Inst Fundamenta, 4242 TAMU, College Stn, TX 77843 USA
9.Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France
10.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China
11.Tsinghua Univ, Tsinghua Ctr Astrophys THCA, Beijing 100084, Peoples R China
12.Observ Carnegie Inst Sci, 813 Santa Barbara St, Pasadena, CA 91101 USA
13.Yale Univ, Dept Astron, New Haven, CT 06511 USA
14.Univ Southern Queensland, Ctr Astrophys, West St, Toowoomba, Qld 4350, Australia
15.Beijing Natl Day Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Jiapeng,Zhang, Hui,Liang, En-Si,et al. Exoplanets in the Antarctic Sky. IV. Dual-band Photometry of Variables Found by the CSTAR-II Commissioning Survey at the North Sky[J]. ASTRONOMICAL JOURNAL,2020,159(4):18.
APA Zhu, Jiapeng.,Zhang, Hui.,Liang, En-Si.,Yu, Zhouyi.,Yang, Ming.,...&Lu, Hongke.(2020).Exoplanets in the Antarctic Sky. IV. Dual-band Photometry of Variables Found by the CSTAR-II Commissioning Survey at the North Sky.ASTRONOMICAL JOURNAL,159(4),18.
MLA Zhu, Jiapeng,et al."Exoplanets in the Antarctic Sky. IV. Dual-band Photometry of Variables Found by the CSTAR-II Commissioning Survey at the North Sky".ASTRONOMICAL JOURNAL 159.4(2020):18.
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