MOA-2012-BLG-505Lb: A Super-Earth-Mass Planet that Probably Resides in the Galactic Bulge

@article{Nagakane2017MOA2012BLG505LbAS,
  title={MOA-2012-BLG-505Lb: A Super-Earth-Mass Planet that Probably Resides in the Galactic Bulge},
  author={Masayuki Nagakane and Takahiro Sumi and Naoki Koshimoto and David P. Bennett and Ian A. Bond and Nicholas J. Rattenbury and Daisuke Suzuki and Fumio Abe and Yuichiro Asakura and Richard K. Barry and Aparna Bhattacharya and Martin A Donachie and Akihiko Fukui and Yuki Hirao and Yoshitaka Itow and M. C. A. Li and Cho Hong Ling and Kimiaki Masuda and Yutaka Matsubara and Taro Matsuo and Yasushi Muraki and Kouji Ohnishi and Cl{\'e}ment Ranc and To. Saito and A. Sharan and Hiroshi Shibai and Denis J. Sullivan and Paul J. Tristram and Touko Yamada and Atsunori Yonehara},
  journal={The Astronomical Journal},
  year={2017},
  volume={154},
  pages={35}
}
We report the discovery of a super-Earth mass planet in the microlensing event MOA-2012-BLG-505. This event has the second shortest event timescale of $t_{\rm E}=10 \pm 1$ days where the observed data show evidence of planetary companion. Our 15 minute high cadence survey observation schedule revealed the short subtle planetary signature. The system shows the well known close/wide degeneracy. The planet/host-star mass ratio is $q =2.1 \times 10^{-4}$ and the projected separation normalized by… Expand

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