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Photometry of Variables from Dome A, Antarctica

  • Lingzhi Wang (a1) (a2) (a3), L. M. Macri (a3), L. Wang (a3) (a4), M. C. B. Ashley (a5), X. Cui (a6), L. L. Feng (a4), X. Gong (a6), J. S. Lawrence (a5) (a7), Q. Liu (a1), D. Luong-Van (a5), C. R. Pennypacker (a8), Z. Shang (a9), J. W. V. Storey (a5), H. Yang (a10), J. Yang (a4), X. Yuan (a6) (a11), D. G. York (a12), X. Zhou (a1) (a11), Z. Zhu (a4) and Z. Zhu (a2)...

Abstract

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.

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References

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Pojmański, G. 2004, Astronomische Nachrichten, 325, 553
Saunders, W., Lawrence, J. S., Storey, J. W. V., Ashley, M. C. B., Kato, S., Minnis, P., Winker, D. M., Liu, G., & Kulesa, C. 2009, PASP, 121, 976
Stetson, P. B. 1987 PASP, 99, 191
Wang, L., Macri, L. M., Krisciunas, K., Wang, L., Ashley, M. C. B., Cui, X., Feng, L.-L., Gong, X., Lawrence, J. S., Liu, Q., Luong-Van, D., Pennypacker, C. R., Shang, Z., Storey, J. W. V., Yang, H., Yang, J., Yuan, X., York, D. G., Zhou, X., Zhu, Z., & Zhu, Z. 2011, AJ, 142, 155
Wang, L., Macri, L. M., Wang, L., Ashley, M. C. B., Cui, X., Feng, L.-L., Gong, X., Lawrence, J. S., Liu, Q., Luong-Van, D., Pennypacker, C. R., Shang, Z., Storey, J. W. V., Yang, H., Yang, J., Yuan, X., York, D. G., Zhou, X., Zhu, Z., & Zhu, Z. 2012, in preparation
Yuan, X., Cui, X., Liu, G., Zhai, F., Gong, X., Zhang, R., Xia, L., Hu, J., Lawrence, J. S., Yan, J., Storey, J. W. V., Wang, L., Feng, L., Ashley, M. C. B., Zhou, X., Jiang, Z. & Zhu, Z. 2008, SPIE, 7012, 152
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Photometry of Variables from Dome A, Antarctica

  • Lingzhi Wang (a1) (a2) (a3), L. M. Macri (a3), L. Wang (a3) (a4), M. C. B. Ashley (a5), X. Cui (a6), L. L. Feng (a4), X. Gong (a6), J. S. Lawrence (a5) (a7), Q. Liu (a1), D. Luong-Van (a5), C. R. Pennypacker (a8), Z. Shang (a9), J. W. V. Storey (a5), H. Yang (a10), J. Yang (a4), X. Yuan (a6) (a11), D. G. York (a12), X. Zhou (a1) (a11), Z. Zhu (a4) and Z. Zhu (a2)...

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