MOA-2011-BLG-262Lb: A Sub-Earth-Mass Moon Orbiting a Gas Giant Primary or a High Velocity Planetary System in the Galactic Bulge

@article{Bennett2014MOA2011BLG262LbAS,
  title={MOA-2011-BLG-262Lb: A Sub-Earth-Mass Moon Orbiting a Gas Giant Primary or a High Velocity Planetary System in the Galactic Bulge},
  author={David P. Bennett and Virginie Batista and Ian A. Bond and Clara S. Bennett and Daisuke Suzuki and Jean Philippe Beaulieu and Andrzej Udalski and Jadzia Donatowicz and Fumio Abe and Christine S. Botzler and Matthew Freeman and Daiki Fukunaga and Akihiko Fukui and Yoshitaka Itow and Naoki Koshimoto and Cho Hong Ling and Kimiaki Masuda and Yutaka Matsubara and Yasushi Muraki and S. Namba and Kouji Ohnishi and Nicholas J. Rattenbury and To. Saito and Denis J. Sullivan and Takahiro Sumi and Winston L. Sweatman and Paul J. Tristram and Naoko Tsurumi and Kohei Wada and Ph. Yock and Michael D. Albrow and Etienne Bachelet and St{\'e}phane Brillant and John A. R. Caldwell and Arnaud Cassan and Andrew A. Cole and Ernesto Corrales and Ch. Coutures and Stefan W. Dieters and D. Dominis Prester and P Fouqu{\'e} and John G. Greenhill and Keith Horne and Jae-Rim Koo and Daniel Kubas and Jean Baptiste Marquette and R. M. Martin and John Menzies and Kailash C. Sahu and Joachim Wambsganss and A. Williams and M. Choi and Darren Lee Depoy and Subo Dong and B. Scott Gaudi and Alan Gould and C. Han and Calen B. Henderson and Daniel McGregor and C.-U. Lee and Richard W. Pogge and In-Gu Shin and Jennifer C. Yee and Maciej Szymaski and Jan Skowron and Radosław Poleski and S. Kozowski and Lukasz Wyrzykowski and Marcin Kubiak and Paweł Pietrukowicz and G. Pietrzyski and I. Soszyski and Krzysztof Ulaczyk and Yiannis Tsapras and Rachel A. Street and Martin Dominik and Daniel M. Bramich and Patrick J. Browne and M. Hundertmark and N. Kains and Colin Snodgrass and Iain A. Steele and Istv{\'a}n D{\'e}k{\'a}ny and Oscar A. Gonzalez and David Heyrovsk{\'y} and Ryo Kandori and Eamonn Kerins and Philip W. Lucas and Dante Minniti and Takahiro Nagayama and Marina Rejkuba and Annie C. Robin and Roberto K. Saito},
  journal={The Astrophysical Journal},
  year={2014},
  volume={785},
  pages={155}
}
We present the first microlensing candidate for a free-floating exoplanet-exomoon system, MOA-2011-BLG-262, with a primary lens mass of M host ~ 4 Jupiter masses hosting a sub-Earth mass moon. The argument for an exomoon hinges on the system being relatively close to the Sun. The data constrain the product ML πrel where ML is the lens system mass and πrel is the lens-source relative parallax. If the lens system is nearby (large πrel), then ML is small (a few Jupiter masses) and the companion is… Expand

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