A brown dwarf orbiting an M-dwarf: MOA 2009-BLG-411L
- Bachelet E.
- Fouqué P.
- Han C.
- Gould A.
- Albrow M. D.
- Beaulieu J.-P.
- Bertin E.
- Bond I. A.
- Christie G. W.
- Heyrovský D.
- Horne K.
- Jørgensen U. G.
- Maoz D.
- Mathiasen M.
- Matsunaga N.
- McCormick J.
- Menzies J.
- Nataf D.
- Natusch T.
- Oi N.
- Renon N.
- Tsapras Y.
- Udalski A.
- Yee J. C.
- Batista V.
- Bennett D. P.
- Brillant S.
- Caldwell J. A. R.
- Cassan A.
- Cole A.
- Cook K. H.
- Coutures C.
- Dieters S.
- Dominik M.
- Dominis Prester D.
- Donatowicz J.
- Greenhill J.
- Kains N.
- Kane S. R.
- Marquette J.-B.
- Martin R.
- Pollard K. R.
- Sahu K. C.
- Street R. A.
- Wambsganss J.
- Williams A.
- Zub M.
- Bos M.
- Dong Subo
- Drummond J.
- Gaudi B. S.
- Graff D.
- Janczak J.
- Kaspi S.
- Kozłowski S.
- Lee C.-U.
- Monard L. A. G.
- Muñoz J. A.
- Park B.-G.
- Pogge R. W.
- Polishook D.
- Shporer A.
- Abe F.
- Botzler C. S.
- Fukui A.
- Furusawa K.
- Hearnshaw J. B.
- Itow Y.
- Korpela A. V.
- Ling C. H.
- Masuda K.
- Matsubara Y.
- Miyake N.
- Muraki Y.
- Ohnishi K.
- Rattenbury N. J.
- Saito To.
- Sullivan D.
- Sumi T.
- Suzuki D.
- Sweatman W. L.
- Tristram P. J.
- Wada K.
- Allan A.
- Bode M. F.
- Bramich D. M.
- Clay N.
- Fraser S. N.
- Hawkins E.
- Kerins E.
- Lister T. A.
- Mottram C. J.
- Saunders E. S.
- Snodgrass C.
- Steele I. A.
- Wheatley P. J.
- Bozza V.
- Browne P.
- Burgdorf M. J.
- Calchi Novati S.
- Dreizler S.
- Finet F.
- Glitrup M.
- Grundahl F.
- HarpsøE K.
- Hessman F. V.
- Hinse T. C.
- Hundertmark M.
- Liebig C.
- Maier G.
- Mancini L.
- Rahvar S.
- Ricci D.
- Scarpetta G.
- Skottfelt J.
- Southworth J.
- Surdej J.
- Zimmer F.
DOIAbstract
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 deviations from a single lens extended source fit. Methods: Thanks to observations by all the collaborations, this event was well monitored. We first decided to characterize the source star properties by using a more refined method than the clas...
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