MOA-bin-29b: A Microlensing Gas-giant Planet Orbiting a Low-mass Host Star

@article{Kondo2019MOAbin29bAM,
  title={MOA-bin-29b: A Microlensing Gas-giant Planet Orbiting a Low-mass Host Star},
  author={Iona Kondo and Takahiro Sumi and David P. Bennett and Andrzej Udalski and Ian A. Bond and Nicholas J. Rattenbury and Valerio Bozza and Yuki Hirao and Daisuke Suzuki and Naoki Koshimoto and Masayuki Nagakane and Shota Miyazaki and F. Abe and Richard K. Barry and Aparna Bhattacharya and Martin A Donachie and Akihiko Fukui and Hirosame Fujii and Yoshitaka Itow and Y. Kamei and M. C. A. Li and Yutaka Matsubara and T. Matsuo and Yasushi Muraki and Cl{\'e}ment Ranc and Hiroshi Shibai and Haruno Suematsu and Denis J. Sullivan and Paul J. Tristram and Takeharu Yamakawa and Atsunori Yonehara and Przemysław Mr{\'o}z and Michał K. Szymański and Igor Soszyński and Krzysztof Ulaczyk},
  journal={The Astronomical Journal},
  year={2019},
  volume={158}
}
We report the discovery of a gas-giant planet orbiting a low-mass host star in the microlensing event MOA-bin-29 that occurred in 2006. We find five degenerate solutions with the planet/host-star mass ratio of q ∼ 10−2. The Einstein radius crossing time of all models are relatively short (∼4–7 days), which indicates that the mass of host star is likely low. The measured lens-source proper motion is 5–9 mas yr−1 depending on the models. Since only finite source effects are detected, we conduct a… 

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