OGLE-2016-BLG-1227L: A Wide-separation Planet from a Very Short-timescale Microlensing Event

  title={OGLE-2016-BLG-1227L: A Wide-separation Planet from a Very Short-timescale Microlensing Event},
  author={C. Han and A. Udalski and A. Gould and M. Albrow and Sun-Ju Chung and K. Hwang and Y. K. Jung and C. Lee and Y. Ryu and I. Shin and Y. Shvartzvald and J. Yee and W. Zang and S. Cha and D. Kim and Hyounwoo Kim and S. Kim and D. Lee and Y. Lee and Byeong-Gon Park and R. Pogge and M. Jee and Doeon Kim and Chun-Hwey Kim and W. Kim and P. Mr'oz and M. Szyma'nski and J. Skowron and R. Poleski and I. Soszy'nski and P. Pietrukowicz and S. Kozłowski and K. Ulaczyk},
  journal={The Astronomical Journal},
We present the analysis of the microlensing event OGLE-2016-BLG-1227. The light curve of this short-duration event appears to be a single-lens event affected by severe finite-source effects. Analysis of the light curve based on single-lens single-source (1L1S) modeling yields very small values of the event timescale, t_E ∼ 3.5 days, and the angular Einstein radius, θ_E ∼ 0.009 mas, making the lens a candidate of a free-floating planet. Close inspection reveals that the 1L1S solution leaves… Expand
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