PLANETARY TRANSIT CANDIDATES IN THE CSTAR FIELD: ANALYSIS OF THE 2008 DATA

Journal Article · Tue Apr 01 00:00:00 EDT 2014 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.1088/0067-0049/211/2/26· OSTI ID:22340281

Wang, Songhu; Zhang, Hui; Zhou, Ji-Lin; Yang, Ming; Liu, Huigen; Meng, Zeyang ^[1]; Zhou, Xu; Fan, Zhou; Liu, Qiang; Ma, Jun ^[2]; Wang, Lifan; Feng, Long-Long ^[3]; Bayliss, D.; Zhou, G. ^[4]; Ashley, M. C. B.; Lawrence, J. S.; Luong-Van, D. M.; Storey, J. W. V.; Wittenmyer, R. A. ^[5]; Gong, Xuefei ^[6] ; others, and

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1. School of Astronomy and Space Science and Key Laboratory of Modern Astronomy and Astrophysics in Ministry of Education, Nanjing University, Nanjing 210093 (China)
2. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)
3. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China)
4. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611 (Australia)
5. School of Physics, University of New South Wales, NSW 2052 (Australia)
6. Nanjing Institute of Astronomical Optics and Technology, Nanjing 210042 (China)

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 deg{sup 2} 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.

• OSTI ID: 22340281
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 211, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ACCURACY
ANTARCTICA
DATA ANALYSIS
DETECTION
MONITORING
PHOTOMETRY
SKY
TELESCOPES