Exoplanets in the Antarctic sky. I. the first data release of AST3-II (CHESPA) and new found variables within the Southern CVZ of TESS
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 d...
Published in: | The Astrophysical Journal Supplement Series |
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Format: | Article in Journal/Newspaper |
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American Astronomical Society
2019
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Online Access: | http://hdl.handle.net/1959.3/447627 https://doi.org/10.3847/1538-4365/aaec0c |
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ftswinburne:tle:cfd29d58-871c-4f60-a305-f3cfa72ae0aa:28f49f06-0da8-44be-9edc-ad1dd0a9c582:1 2023-05-15T13:57:59+02:00 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, Hui Yu, Zhouyi Liang, Ensi Yang, Ming Ashley, Michael C. B. Cui, Xiangqun Du, Fujia Fu, Jianning Gong, Xuefei Gu, Bozhong Hu, Yi Jiang, Peng Liu, Huigen Lawrence, Jon Liu, Qiang Li, Xiaoyan Li, Zhengyang Ma, Bin Mould, Jeremy Shang, Zhaohui Suntzeff, Nicholas B. Tao, Charling Tian, Qiguo Tinney, C. G. Uddin, Syed A. Wang, Lifan Wang, Songhu Wang, Xiaofeng Wei, Peng Wright, Duncan Wu, Xuefeng Wittenmyer, Robert A. Xu, Lingzhe Yang, Shi-hai Yu, Ce Yuan, Xiangyan Zheng, Jessica Zhou, Hongyan Zhou, Ji-lin Zhu, Zhenxi Swinburne University of Technology 2019 http://hdl.handle.net/1959.3/447627 https://doi.org/10.3847/1538-4365/aaec0c unknown American Astronomical Society http://hdl.handle.net/1959.3/447627 https://doi.org/10.3847/1538-4365/aaec0c Copyright © 2019 The American Astronomical Society. All rights reserved. The Astrophysical Journal Supplement Series, Vol. 240, no. 2 (Feb 2019), article no. 16 Journal article 2019 ftswinburne https://doi.org/10.3847/1538-4365/aaec0c 2019-09-07T21:25:37Z 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. Article in Journal/Newspaper Antarc* Antarctic Swinburne University of Technology: Swinburne Research Bank Antarctic Austral The Antarctic The Astrophysical Journal Supplement Series 240 2 16 |
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Open Polar |
collection |
Swinburne University of Technology: Swinburne Research Bank |
op_collection_id |
ftswinburne |
language |
unknown |
description |
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. |
author2 |
Swinburne University of Technology |
format |
Article in Journal/Newspaper |
author |
Zhang, Hui Yu, Zhouyi Liang, Ensi Yang, Ming Ashley, Michael C. B. Cui, Xiangqun Du, Fujia Fu, Jianning Gong, Xuefei Gu, Bozhong Hu, Yi Jiang, Peng Liu, Huigen Lawrence, Jon Liu, Qiang Li, Xiaoyan Li, Zhengyang Ma, Bin Mould, Jeremy Shang, Zhaohui Suntzeff, Nicholas B. Tao, Charling Tian, Qiguo Tinney, C. G. Uddin, Syed A. Wang, Lifan Wang, Songhu Wang, Xiaofeng Wei, Peng Wright, Duncan Wu, Xuefeng Wittenmyer, Robert A. Xu, Lingzhe Yang, Shi-hai Yu, Ce Yuan, Xiangyan Zheng, Jessica Zhou, Hongyan Zhou, Ji-lin Zhu, Zhenxi |
spellingShingle |
Zhang, Hui Yu, Zhouyi Liang, Ensi Yang, Ming Ashley, Michael C. B. Cui, Xiangqun Du, Fujia Fu, Jianning Gong, Xuefei Gu, Bozhong Hu, Yi Jiang, Peng Liu, Huigen Lawrence, Jon Liu, Qiang Li, Xiaoyan Li, Zhengyang Ma, Bin Mould, Jeremy Shang, Zhaohui Suntzeff, Nicholas B. Tao, Charling Tian, Qiguo Tinney, C. G. Uddin, Syed A. Wang, Lifan Wang, Songhu Wang, Xiaofeng Wei, Peng Wright, Duncan Wu, Xuefeng Wittenmyer, Robert A. Xu, Lingzhe Yang, Shi-hai Yu, Ce Yuan, Xiangyan Zheng, Jessica Zhou, Hongyan Zhou, Ji-lin Zhu, Zhenxi Exoplanets in the Antarctic sky. I. the first data release of AST3-II (CHESPA) and new found variables within the Southern CVZ of TESS |
author_facet |
Zhang, Hui Yu, Zhouyi Liang, Ensi Yang, Ming Ashley, Michael C. B. Cui, Xiangqun Du, Fujia Fu, Jianning Gong, Xuefei Gu, Bozhong Hu, Yi Jiang, Peng Liu, Huigen Lawrence, Jon Liu, Qiang Li, Xiaoyan Li, Zhengyang Ma, Bin Mould, Jeremy Shang, Zhaohui Suntzeff, Nicholas B. Tao, Charling Tian, Qiguo Tinney, C. G. Uddin, Syed A. Wang, Lifan Wang, Songhu Wang, Xiaofeng Wei, Peng Wright, Duncan Wu, Xuefeng Wittenmyer, Robert A. Xu, Lingzhe Yang, Shi-hai Yu, Ce Yuan, Xiangyan Zheng, Jessica Zhou, Hongyan Zhou, Ji-lin Zhu, Zhenxi |
author_sort |
Zhang, Hui |
title |
Exoplanets in the Antarctic sky. I. the first data release of AST3-II (CHESPA) and new found variables within the Southern CVZ of TESS |
title_short |
Exoplanets in the Antarctic sky. I. the first data release of AST3-II (CHESPA) and new found variables within the Southern CVZ of TESS |
title_full |
Exoplanets in the Antarctic sky. I. the first data release of AST3-II (CHESPA) and new found variables within the Southern CVZ of TESS |
title_fullStr |
Exoplanets in the Antarctic sky. I. the first data release of AST3-II (CHESPA) and new found variables within the Southern CVZ of TESS |
title_full_unstemmed |
Exoplanets in the Antarctic sky. I. the first data release of AST3-II (CHESPA) and new found variables within the Southern CVZ of TESS |
title_sort |
exoplanets in the antarctic sky. i. the first data release of ast3-ii (chespa) and new found variables within the southern cvz of tess |
publisher |
American Astronomical Society |
publishDate |
2019 |
url |
http://hdl.handle.net/1959.3/447627 https://doi.org/10.3847/1538-4365/aaec0c |
geographic |
Antarctic Austral The Antarctic |
geographic_facet |
Antarctic Austral The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
The Astrophysical Journal Supplement Series, Vol. 240, no. 2 (Feb 2019), article no. 16 |
op_relation |
http://hdl.handle.net/1959.3/447627 https://doi.org/10.3847/1538-4365/aaec0c |
op_rights |
Copyright © 2019 The American Astronomical Society. All rights reserved. |
op_doi |
https://doi.org/10.3847/1538-4365/aaec0c |
container_title |
The Astrophysical Journal Supplement Series |
container_volume |
240 |
container_issue |
2 |
container_start_page |
16 |
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