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    MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection

    Access Status
    Open access via publisher
    Authors
    Yee, J.
    Hung, L.
    Bond, I.
    Allen, W.
    Monard, L.
    Albrow, M.
    Fouque, P.
    Dominik, M.
    Tsapras, Y.
    Udalski, A.
    Gould, A.
    Zellem, R.
    Bos, M.
    Christie, G.
    DePoy, D.
    Dong, S.
    Drummond, J.
    Gaudi, B.
    Gorbikov, E.
    Han, C.
    Kaspi, S.
    Klein, N.
    Lee, C.
    Maoz, D.
    McCormick, J.
    Moorhouse, D.
    Natusch, T.
    Nola, M.
    Park, B.
    Pogge, R.
    Polishook, D.
    Shporer, A.
    Shvartzvald, Y.
    Skowron, J.
    Thornley, G.
    Abe, F.
    Bennett, D.
    Botzler, C.
    Chote, P.
    Freeman, M.
    Fukui, A.
    Furusawa, K.
    Harris, P.
    Itow, Y.
    Ling, C.
    Masuda, K.
    Matsubara, Y.
    Miyake, N.
    Ohnishi, K.
    Rattenbury, N.
    Saito, T.
    Sullivan, D.
    Sumi, T.
    Suzuki, D.
    Sweatman, W.
    Tristram, P.
    Wada, K.
    Yock, P.
    Szymanski, M.
    Soszynski, I.
    Kubiak, M.
    Poleski, R.
    Ulaczyk, K.
    Pietrzynski, G.
    Wyrzykowski, L.
    Bachelet, E.
    Batista, V.
    Beatty, T.
    Beaulieu, J.
    Bennett, C.
    Bowens-Rubin, R.
    Brillant, S.
    Caldwell, J.
    Cassan, A.
    Cole, A.
    Corrales, E.
    Coutures, C.
    Dieters, S.
    Dominis Prester, D.
    Donatowicz, J.
    Greenhill, J.
    Henderson, C.
    Kubas, D.
    Marquette, J.
    Martin, R.
    Menzies, J.
    Shappee, B.
    Williams, Andrew
    Wouters, D.
    van Saders, J.
    Zub, M.
    Street, R.
    Horne, K.
    Bramich, D.
    Steele, I.
    Alsubai, K.
    Bozza, V.
    Browne, P.
    Burgdorf, M.
    Calchi Novati, S.
    Dodds, P.
    Finet, F.
    Gerner, T.
    Hardis, S.
    Harpsoe, K.
    Hessman, F.
    Hinse, T.
    Hundertmark, M.
    Jorgensen, U.
    Kains, N.
    Kerins, E.
    Liebig, C.
    Mancini, L.
    Mathiasen, M.
    Penny, M.
    Proft, S.
    Rahvar, S.
    Ricci, D.
    Sahu, K.
    Scarpetta, G.
    Schafer, S.
    Schonebeck, F.
    Snodgrass, C.
    Southworth, J.
    Surdej, J.
    Wambsganss, J.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Yee, J. and Hung, L. and Bond, I. and Allen, W. and Monard, L. and Albrow, M. and Fouque, P. et al. 2013. MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection. The Astrophysical Journal. 769.
    Source Title
    The Astrophysical Journal
    DOI
    10.1088/0004-637X/769/1/77
    ISSN
    0004-637X
    URI
    http://hdl.handle.net/20.500.11937/42110
    Collection
    • Curtin Research Publications
    Abstract

    We analyze MOA-2010-BLG-311, a high magnification (Amax > 600) microlensing event with complete data coverage over the peak, making it very sensitive to planetary signals. We fit this event with both a point lens and a two-body lens model and find that the two-body lens model is a better fit but with only ??2 ~ 80. The preferred mass ratio between the lens star and its companion is q = 10-3.7±0.1, placing the candidate companion in the planetary regime. Despite the formal significance of the planet, we show that because of systematics in the data the evidence for a planetary companion to the lens is too tenuous to claim a secure detection. When combined with analyses of other high-magnification events, this event helps empirically define the threshold for reliable planet detection in high-magnification events, which remains an open question.

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