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Photometry of Variables from Dome A, Antarctica

Published online by Cambridge University Press:  30 January 2013

Lingzhi Wang ,
L. M. Macri ,
L. Wang ,
M. C. B. Ashley ,
X. Cui ,
L. L. Feng ,
X. Gong ,
J. S. Lawrence ,
Q. Liu  and
D. Luong-Van
...Show all authors
Lingzhi Wang
Affiliation:
National Astronomical Observatory of China, Chinese Academy of Sciences, Beijing 100012, China email: wanglingzhi@bao.ac.cn Department of Astronomy, Beijing Normal University, Beijing, 100875, China Mitchell Institute for Fundamental Physics & Astronomy, Department of Physics & Astronomy, Texas A&M University, College Station, TX 77843, USA
L. M. Macri
Affiliation:
Mitchell Institute for Fundamental Physics & Astronomy, Department of Physics & Astronomy, Texas A&M University, College Station, TX 77843, USA
L. Wang
Affiliation:
Mitchell Institute for Fundamental Physics & Astronomy, Department of Physics & Astronomy, Texas A&M University, College Station, TX 77843, USA Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
M. C. B. Ashley
Affiliation:
School of Physics, University of New South Wales, NSW 2052, Australia
X. Cui
Affiliation:
Nanjing Institute of Astronomical Optics and Technology, Nanjing 210042, China
L. L. Feng
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
X. Gong
Affiliation:
Nanjing Institute of Astronomical Optics and Technology, Nanjing 210042, China
J. S. Lawrence
Affiliation:
School of Physics, University of New South Wales, NSW 2052, Australia Australian Astronomical Observatory, NSW 1710, Australia
Q. Liu
Affiliation:
National Astronomical Observatory of China, Chinese Academy of Sciences, Beijing 100012, China email: wanglingzhi@bao.ac.cn
D. Luong-Van
Affiliation:
School of Physics, University of New South Wales, NSW 2052, Australia
C. R. Pennypacker
Affiliation:
Center for Astrophysics, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
Z. Shang
Affiliation:
Tianjin Normal University, Tianjin 300074, China
J. W. V. Storey
Affiliation:
School of Physics, University of New South Wales, NSW 2052, Australia
H. Yang
Affiliation:
Polar Research Institute of China, Pudong, Shanghai 200136, China
J. Yang
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
X. Yuan
Affiliation:
Nanjing Institute of Astronomical Optics and Technology, Nanjing 210042, China Chinese Center for Antarctic Astronomy, Nanjing 210008, China
D. G. York
Affiliation:
Department of Astronomy and Astrophysics and Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, USA
X. Zhou
Affiliation:
National Astronomical Observatory of China, Chinese Academy of Sciences, Beijing 100012, China email: wanglingzhi@bao.ac.cn Chinese Center for Antarctic Astronomy, Nanjing 210008, China
Z. Zhu
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
Z. Zhu
Affiliation:
Department of Astronomy, Beijing Normal University, Beijing, 100875, China
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Abstract

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Dome A on the Antarctic plateau is likely one of the best observing sites on Earth (Saunders et al. 2009). We used the CSTAR telescope (Yuan et al. 2008) to obtain time-series photometry of 104 stars with i>14.5 mag during 128 days of the 2008 Antarctic winter season (Wang et al. 2011). During the 2010 season we observed 2 × 104 stars with i>15 mag for 183 days (Wang et al. 2012). We detected a total of 262 variables, a 6 × increase relative to previous surveys of the same area and depth carried out from temperate sites (Pojmanski 2004). Our observations show that high-precision, long-term photometry is possible from Antarctica and that astronomically useful data can be obtained during 80% of the winter season.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S288: Astrophysics from Antarctica , August 2012 , pp. 320 - 321
Copyright
Copyright © International Astronomical Union 2013

References

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