[1] [1] Alam S, Albareti F D, Allende Prieto C, et al. Astrophysical Journal Supplement, 2015, 219: 12.

[2] [2] Ahn C P, Alexandroff R, Allende Prieto C, et al. Astrophysical Journal Supplement, 2014, 211: 17.

[3] [3] Raymond Sean N, Szkody Paula, Hawley Suzanne L, et al. The Astronomical Journal, 2003, 125(5): 2621.

[4] [4] Rebassa Mansergas A, Gansicke B T, Schreiber M R, et al. Monthly Notices of the Royal Astronomical Society, 2010, 402(1): 620.

[5] [5] Silvestri Nicole M, Hawley Suzanne L, West Andrew A, et al. The Astronomical Journal, 2006, 131(3): 1674.

[6] [6] Heller R, Homeier D, Dreizler S, et al. Astronomy and Astrophysics, 2009, 496(1): 191.

[7] [7] Zhao Gang, Zhao Yongheng, Chu Yaoquan, et al. Research in Astronomy and Astrophysics, 2012, 12: 723.

[9] [9] Koester D, Provencal J, Gansicke B T. Astronomy & Astrophysics, 2014, 568: 8.

[10] [10] Gustafsson B, Edvardsson B, Eriksson K, et al. Astronomy & Astrophysics, 2008, 486: 951.

[11] [11] Chennamangalam Jayanth, Scott Simon, Jones Glenn, et al. Publications of the Astronomical Society of Australia, 2014, 31: 5.