Eclipsing binaries from the cstar project at Dome A, Antarctica
The Chinese Small Telescope ARray (CSTAR) has observed an area around the Celestial South Pole at Dome A since 2008. About 20,000 light curves in the i band were obtained during the observation season lasting from 2008 March to July. The photometric precision achieves about 4 mmag at i = 7.5 and 20...
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Online Access: | https://research.usq.edu.au/item/q41q3/eclipsing-binaries-from-the-cstar-project-at-dome-a-antarctica https://research.usq.edu.au/download/fef7ed1e92201f97867c2e1bf27ddf8406553479d71f7e23e7b9846ceb35b8f4/5669413/Yang%20et%20al,%202015.pdf https://doi.org/10.1088/0067-0049/217/2/28 |
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ftusqland:oai:research.usq.edu.au:q41q3 2023-05-15T13:48:06+02:00 Eclipsing binaries from the cstar project at Dome A, Antarctica Yang, Ming Zhang, Hui Wang, Songhu Zhou, Ji-Lin Zhou, Xu Wang, Lingzhi Wang, Lifan Wittenmyer, R. A. Liu, Hui-Gen Meng, Zeyang Ashley, M. C. B. Storey, J. W. V. Bayliss, D. Tinney, Chris Wang, Ying Wu, Donghong Liang, Ensi Yu, Zhouyi Fan, Zhou Feng, Long-Long Gong, Xuefei Lawrence, J. S. Liu, Qiang Luong-Van, D. M. Ma, Jun Wu, Zhenyu Yan, Jun Yang, Huigen Yang, Ji Yuan, Xiangyan Zhang, Tianmeng Zhu, Zhenxi Zou, Hu 2015 application/pdf https://research.usq.edu.au/item/q41q3/eclipsing-binaries-from-the-cstar-project-at-dome-a-antarctica https://research.usq.edu.au/download/fef7ed1e92201f97867c2e1bf27ddf8406553479d71f7e23e7b9846ceb35b8f4/5669413/Yang%20et%20al,%202015.pdf https://doi.org/10.1088/0067-0049/217/2/28 unknown https://research.usq.edu.au/download/fef7ed1e92201f97867c2e1bf27ddf8406553479d71f7e23e7b9846ceb35b8f4/5669413/Yang%20et%20al,%202015.pdf https://doi.org/10.1088/0067-0049/217/2/28 Yang, Ming, Zhang, Hui, Wang, Songhu, Zhou, Ji-Lin, Zhou, Xu, Wang, Lingzhi, Wang, Lifan, Wittenmyer, R. A., Liu, Hui-Gen, Meng, Zeyang, Ashley, M. C. B., Storey, J. W. V., Bayliss, D., Tinney, Chris, Wang, Ying, Wu, Donghong, Liang, Ensi, Yu, Zhouyi, Fan, Zhou, ., Zou, Hu. 2015. "Eclipsing binaries from the cstar project at Dome A, Antarctica." Astrophysical Journal Supplement Series. 217 (2). https://doi.org/10.1088/0067-0049/217/2/28 eclipsing binaries data analysis methods site testing stars statistics photometric techniques article PeerReviewed 2015 ftusqland https://doi.org/10.1088/0067-0049/217/2/28 2023-01-03T12:35:04Z The Chinese Small Telescope ARray (CSTAR) has observed an area around the Celestial South Pole at Dome A since 2008. About 20,000 light curves in the i band were obtained during the observation season lasting from 2008 March to July. The photometric precision achieves about 4 mmag at i = 7.5 and 20 mmag at i = 12 within a 30 s exposure time. These light curves are analyzed using Lomb-Scargle, Phase Dispersion Minimization, and Box Least Squares methods to search for periodic signals. False positives may appear as a variable signature caused by contaminating stars and the observation mode of CSTAR. Therefore, the period and position of each variable candidate are checked to eliminate false positives. Eclipsing binaries are removed by visual inspection, frequency spectrum analysis, and a locally linear embedding technique. We identify 53 eclipsing binaries in the field of view of CSTAR,containing 24 detached binaries, 8 semi-detached binaries, 18 contact binaries, and 3 ellipsoidal variables. To derive the parameters of these binaries, we use the Eclipsing Binaries via Artificial Intelligence method. The primary and secondary eclipse timing variations (ETVs) for semi-detached and contact systems are analyzed. Correlated primary and secondary ETVs confirmed by false alarm tests may indicate an unseen perturbing companion. Through ETV analysis, we identify two triple systems (CSTAR J084612.64-883342.9 and CSTAR J220502.55-895206.7). The orbital parameters of the third body in CSTAR J220502.55-895206.7 are derived using a simple dynamical model. Article in Journal/Newspaper Antarc* Antarctica South pole South pole University of Southern Queensland: USQ ePrints South Pole The Astrophysical Journal Supplement Series 217 2 28 |
institution |
Open Polar |
collection |
University of Southern Queensland: USQ ePrints |
op_collection_id |
ftusqland |
language |
unknown |
topic |
eclipsing binaries data analysis methods site testing stars statistics photometric techniques |
spellingShingle |
eclipsing binaries data analysis methods site testing stars statistics photometric techniques Yang, Ming Zhang, Hui Wang, Songhu Zhou, Ji-Lin Zhou, Xu Wang, Lingzhi Wang, Lifan Wittenmyer, R. A. Liu, Hui-Gen Meng, Zeyang Ashley, M. C. B. Storey, J. W. V. Bayliss, D. Tinney, Chris Wang, Ying Wu, Donghong Liang, Ensi Yu, Zhouyi Fan, Zhou Feng, Long-Long Gong, Xuefei Lawrence, J. S. Liu, Qiang Luong-Van, D. M. Ma, Jun Wu, Zhenyu Yan, Jun Yang, Huigen Yang, Ji Yuan, Xiangyan Zhang, Tianmeng Zhu, Zhenxi Zou, Hu Eclipsing binaries from the cstar project at Dome A, Antarctica |
topic_facet |
eclipsing binaries data analysis methods site testing stars statistics photometric techniques |
description |
The Chinese Small Telescope ARray (CSTAR) has observed an area around the Celestial South Pole at Dome A since 2008. About 20,000 light curves in the i band were obtained during the observation season lasting from 2008 March to July. The photometric precision achieves about 4 mmag at i = 7.5 and 20 mmag at i = 12 within a 30 s exposure time. These light curves are analyzed using Lomb-Scargle, Phase Dispersion Minimization, and Box Least Squares methods to search for periodic signals. False positives may appear as a variable signature caused by contaminating stars and the observation mode of CSTAR. Therefore, the period and position of each variable candidate are checked to eliminate false positives. Eclipsing binaries are removed by visual inspection, frequency spectrum analysis, and a locally linear embedding technique. We identify 53 eclipsing binaries in the field of view of CSTAR,containing 24 detached binaries, 8 semi-detached binaries, 18 contact binaries, and 3 ellipsoidal variables. To derive the parameters of these binaries, we use the Eclipsing Binaries via Artificial Intelligence method. The primary and secondary eclipse timing variations (ETVs) for semi-detached and contact systems are analyzed. Correlated primary and secondary ETVs confirmed by false alarm tests may indicate an unseen perturbing companion. Through ETV analysis, we identify two triple systems (CSTAR J084612.64-883342.9 and CSTAR J220502.55-895206.7). The orbital parameters of the third body in CSTAR J220502.55-895206.7 are derived using a simple dynamical model. |
format |
Article in Journal/Newspaper |
author |
Yang, Ming Zhang, Hui Wang, Songhu Zhou, Ji-Lin Zhou, Xu Wang, Lingzhi Wang, Lifan Wittenmyer, R. A. Liu, Hui-Gen Meng, Zeyang Ashley, M. C. B. Storey, J. W. V. Bayliss, D. Tinney, Chris Wang, Ying Wu, Donghong Liang, Ensi Yu, Zhouyi Fan, Zhou Feng, Long-Long Gong, Xuefei Lawrence, J. S. Liu, Qiang Luong-Van, D. M. Ma, Jun Wu, Zhenyu Yan, Jun Yang, Huigen Yang, Ji Yuan, Xiangyan Zhang, Tianmeng Zhu, Zhenxi Zou, Hu |
author_facet |
Yang, Ming Zhang, Hui Wang, Songhu Zhou, Ji-Lin Zhou, Xu Wang, Lingzhi Wang, Lifan Wittenmyer, R. A. Liu, Hui-Gen Meng, Zeyang Ashley, M. C. B. Storey, J. W. V. Bayliss, D. Tinney, Chris Wang, Ying Wu, Donghong Liang, Ensi Yu, Zhouyi Fan, Zhou Feng, Long-Long Gong, Xuefei Lawrence, J. S. Liu, Qiang Luong-Van, D. M. Ma, Jun Wu, Zhenyu Yan, Jun Yang, Huigen Yang, Ji Yuan, Xiangyan Zhang, Tianmeng Zhu, Zhenxi Zou, Hu |
author_sort |
Yang, Ming |
title |
Eclipsing binaries from the cstar project at Dome A, Antarctica |
title_short |
Eclipsing binaries from the cstar project at Dome A, Antarctica |
title_full |
Eclipsing binaries from the cstar project at Dome A, Antarctica |
title_fullStr |
Eclipsing binaries from the cstar project at Dome A, Antarctica |
title_full_unstemmed |
Eclipsing binaries from the cstar project at Dome A, Antarctica |
title_sort |
eclipsing binaries from the cstar project at dome a, antarctica |
publishDate |
2015 |
url |
https://research.usq.edu.au/item/q41q3/eclipsing-binaries-from-the-cstar-project-at-dome-a-antarctica https://research.usq.edu.au/download/fef7ed1e92201f97867c2e1bf27ddf8406553479d71f7e23e7b9846ceb35b8f4/5669413/Yang%20et%20al,%202015.pdf https://doi.org/10.1088/0067-0049/217/2/28 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
Antarc* Antarctica South pole South pole |
genre_facet |
Antarc* Antarctica South pole South pole |
op_relation |
https://research.usq.edu.au/download/fef7ed1e92201f97867c2e1bf27ddf8406553479d71f7e23e7b9846ceb35b8f4/5669413/Yang%20et%20al,%202015.pdf https://doi.org/10.1088/0067-0049/217/2/28 Yang, Ming, Zhang, Hui, Wang, Songhu, Zhou, Ji-Lin, Zhou, Xu, Wang, Lingzhi, Wang, Lifan, Wittenmyer, R. A., Liu, Hui-Gen, Meng, Zeyang, Ashley, M. C. B., Storey, J. W. V., Bayliss, D., Tinney, Chris, Wang, Ying, Wu, Donghong, Liang, Ensi, Yu, Zhouyi, Fan, Zhou, ., Zou, Hu. 2015. "Eclipsing binaries from the cstar project at Dome A, Antarctica." Astrophysical Journal Supplement Series. 217 (2). https://doi.org/10.1088/0067-0049/217/2/28 |
op_doi |
https://doi.org/10.1088/0067-0049/217/2/28 |
container_title |
The Astrophysical Journal Supplement Series |
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217 |
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