Planetary transit candidates in the CSTAR field: analysis of the 2008 data

Songhu Wang, Hui Zhang, Ji Lin Zhou, Xu Zhou, Ming Yang, Lifan Wang, D. Bayliss, G. Zhou, M. C B Ashley, Zhou Fan, Long Long Feng, Xuefei Gong, J. S. Lawrence, Huigen Liu, Qiang Liu, D. M. Luong-Van, Jun Ma, Zeyang Meng, J. W V Storey, R. A. WittenmyerZhenyu Wu, Jun Yan, Huigen Yang, Ji Yang, Jiayi Yang, Xiangyan Yuan, Tianmeng Zhang, Zhenxi Zhu, Hu Zou

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


The Chinese Small Telescope ARray (CSTAR) is a group of four identical, fully automated, static 14.5 cm telescopes. CSTAR is located at Dome A, Antarctica and covers 20 deg2 of sky around the South Celestial Pole. The installation is designed to provide high-cadence photometry for the purpose of monitoring the quality of the astronomical observing conditions at Dome A and detecting transiting exoplanets. CSTAR has been operational since 2008, and has taken a rich and high-precision photometric data set of 10,690 stars. In the first observing season, we obtained 291,911 qualified science frames with 20 s integrations in the i band. Photometric precision reaches 4 mmag at 20 s cadence at i = 7.5 and is 20 mmag at i = 12. Using robust detection methods, 10 promising exoplanet candidates were found. Four of these were found to be giants using spectroscopic follow-up. All of these transit candidates are presented here along with the discussion of their detailed properties as well as the follow-up observations.

Original languageEnglish
Article number26
Pages (from-to)1-15
Number of pages15
JournalThe Astrophysical Journal. Supplement Series
Issue number2
Publication statusPublished - Apr 2014
Externally publishedYes


  • methods: data analysis
  • planetary systems
  • surveys
  • techniques: photometric


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