A brown dwarf orbiting an M-dwarf: MOA 2009–BLG–411L

Bachelet, E.; Fouqué, P.; Han, Cheongho; Gould, Andrew; D. Albrow, Michael; Beaulieu, Jean‐Philippe; Bertin, E.; A. Bond, I.; W. Christie, G.; Heyrovský, David; Horne, K.; G. Jørgensen, U.; Maoz, D.; Mathiasen, M.; Matsunaga, Noriyuki; McCormick, J.; W. Menzies, J.; M. Nataf, David; Natusch, T.; Oi, Nagisa; Renon, N.; Tsapras, Y.; Udalski, A.; C. Yee, Jennifer; Batista, V.; P. Bennett, D.; Brillant, S.; A. R. Caldwell, J.; Cassan, A.; A. Cole, Andrew; H. Cook, K.; Coutures, C.; Dieters, S.; Dominik, M.; Dominis Prester, D.; Donatowicz, J.; Greenhill, J.; Kains, N.; R. Kane, Stephen; B. Marquette, J.; Martín, Roland; R. Pollard, K.; C. Sahu, K.; A. Street, R.; Wambsganß, J.; Williams, A.; Zub, M.; Bos, M.; Dong, Subo; Drummond, J.; S. Gaudi, B.; Graff, D.; Janczak, J.; Kaspi, S.; Kozłowski, S.; Lee, Chung‐Uk; A. G. Monard, L.; A. Muñoz, J.; Park, B.-G.; W. Pogge, Richard; Polishook, David; Shporer, Avi; FUN, (The; Abe, F.; S. Botzler, C.; Fukui, Akihiko; Furusawa, K.; B. Hearnshaw, J.; Itow, Y.; Korpela, A.; H. Ling, C.; Masuda, K.; Matsubara, Y.; Miyake, N.; Muraki, Y.; Ohnishi, Koji; J. Rattenbury, Nicholas; Saito, To.; J. Sullivan, D.; Sumi, T.; Suzuki, Daisuke; L. Sweatman, W.; J. Tristram, P.; Wada, K.; Allan, A.; F. Bode, M.; M. Bramich, D.; Clay, N.; N. Fraser, S.; Hawkins, E.; Kerins, E.; Lister, Tim; J. Mottram, C.; S. Saunders, E.; Snodgrass, C.; A. Steele, I.; J. Wheatley, P.; Bozza, V.; Browne, P.; Burgdorf, M.; Calchi Novati, S.; Dreizler, S.; Finet, F.; Glitrup, M.; Grundahl, F.; Harpsøe, K.; V. Hessman, F.; C. Hinse, T.; Hundertmark, M.; Liebig, C.; Maier, G.; Mancini, L.; Rahvar, S.; Ricci, D.; Scarpetta, G.; Skottfelt, J.; Southworth, J.; Surdej, J.; Zimmer, F.

doi:10.1051/0004-6361/201219765

Public

A brown dwarf orbiting an M-dwarf: MOA 2009–BLG–411L

Published in Astronomy and Astrophysics • Sep 21, 2012

Authors:

E. Bachelet

P. Fouqué

Cheongho Han

Abstract

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.

Subject

Physics

Brown dwarf

Astrophysics

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