A brown dwarf orbiting an M-dwarf: MOA 2009-BLG-411L
Bachelet, E.; Fouque, P.; Han, C.; Gould, A.; Albrow, M.; Beaulieu, J.-P.; Bertin, E.; Bond, I.; Christie, G. W.; Heyrovsky, D.; Menzies, J. W.; Nataf, David; Udalski, A.; Bennett, D. P.; Cassan, A.; Martin, R.; Pollard, K. R.; Sahu, K. C.; Williams, Andrew; Mancini, L.; Hearnshaw, J. B.
Context. Caustic crossing is the clearest signature of binary lenses in microlensing. In the present context, this signature is diluted by the large source star but a detailed analysis has allowed the companion signal to be extracted. Aims. MOA 2009-BLG-411 was detected on August 5, 2009 by the MOA-Collaboration. Alerted as a high-magnification event, it was sensitive to planets. Suspected anomalies in the light curve were not confirmed by a real-time model, but further analysis revealed small...[Show more]
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