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

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.
Authors:
; ; ; ; ;  [1] ; ; ; ;  [2] ; ;  [3] ; ;  [4] ; ; ; ; ;  [5] ;  [6] more »; « less
  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)
Publication Date:
OSTI Identifier:
22340281
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal, Supplement Series; Journal Volume: 211; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; ANTARCTICA; DATA ANALYSIS; DETECTION; MONITORING; PHOTOMETRY; SKY; TELESCOPES