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    MOA-2010-BLG-328Lb: A sub-Neptune orbiting very late M dwarf?

    Access Status
    Fulltext not available
    Authors
    Furusawa, K.
    Udalski, A.
    Sumi, T.
    Bennett, D.
    Bond, I.
    Gould, A.
    Jørgensen, U.
    Snodgrass, C.
    Dominis Prester, D.
    Albrow, M.
    Abe, F.
    Botzler, C.
    Chote, P.
    Freeman, M.
    Fukui, A.
    Harris, P.
    Itow, Y.
    Ling, C.
    Masuda, K.
    Matsubara, Y.
    Miyake, N.
    Muraki, Y.
    Ohnishi, K.
    Rattenbury, N.
    Saito, T.
    Sullivan, D.
    Suzuki, D.
    Sweatman, W.
    Tristram, P.
    Wada, K.
    Yock, P.
    Szymanski, M.
    Soszynski, I.
    Kubiak, M.
    Poleski, R.
    Ulaczyk, K.
    Pietrzynski, G.
    Wyrzykowski, L.
    Choi, J.
    Christie, G.
    DePoy, D.
    Dong, S.
    Drummond, J.
    Gaudi, B.
    Han, C.
    Hung, L.
    Hwang, K.
    Lee, C.
    McCormick, J.
    Moorhouse, D.
    Natusch, T.
    Nola, M.
    Ofek, E.
    Pogge, R.
    Shin, I.
    Skowron, J.
    Thornley, G.
    Yee, J.
    Alsubai, K.
    Bozza, V.
    Browne, P.
    Burgdorf, M.
    Calchi Novati, S.
    Dodds, P.
    Dominik, M.
    Finet, F.
    Gerner, T.
    Hardis, S.
    Harpsoe, K.
    Hinse, T.
    Hundertmark, M.
    Kains, N.
    Kerins, E.
    Liebig, C.
    Mancini, L.
    Mathiasen, M.
    Penny, M.
    Proft, S.
    Rahvar, S.
    Ricci, D.
    Scarpetta, G.
    Schafer, S.
    Schonebeck, F.
    Southworth, J.
    Surdej, J.
    Wambsganss, J.
    Street, R.
    Bramich, D.
    Steele, I.
    Tsapras, Y.
    Horne, K.
    Donatowicz, J.
    Sahu, K.
    Bachelet, E.
    Batista, V.
    Beatty, T.
    Beaulieu, J.
    Bennett, C.
    Black, C.
    Bowens-Rubin, R.
    Brillant, S.
    Caldwell, J.
    Cassan, A.
    Cole, A.
    Corrales, E.
    Coutures, C.
    Dieters, S.
    Fouque, P.
    Greenhill, J.
    Henderson, C.
    Kubas, D.
    Marquette, J.
    Martin, R.
    Menzies, J.
    Shappee, B.
    Williams, Andrew
    Wouters, D.
    van Saders, J.
    Zellem, R.
    Zub, M.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Furusawa, K. and Udalski, A. and Sumi, T. and Bennett, D. and Bond, I. and Gould, A. and Jørgensen, U. et al. 2013. MOA-2010-BLG-328Lb: A sub-Neptune orbiting very late M dwarf?. The Astrophysical Journal. 779 (2).
    Source Title
    The Astrophysical Journal
    Additional URLs
    http://iopscience.iop.org/0004-637X/779/2/91/pdf/0004-637X_779_2_91.pdf
    ISSN
    0004-637X
    URI
    http://hdl.handle.net/20.500.11937/16718
    Collection
    • Curtin Research Publications
    Abstract

    We analyze the planetary microlensing event MOA-2010-BLG-328. The best fit yields host and planetary massesof Mh = 0.11 ± 0.01M and Mp = 9.2 ± 2.2M?, corresponding to a very late M dwarf and sub-Neptune-massplanet, respectively. The system lies at DL = 0.81 ± 0.10 kpc with projected separation r? = 0.92 ± 0.16 AU.Because of the host’s a priori unlikely close distance, as well as the unusual nature of the system, we considerthe possibility that the microlens parallax signal, which determines the host mass and distance, is actually due toxallarap (source orbital motion) that is being misinterpreted as parallax. We show a result that favors the parallaxsolution, even given its close host distance. We show that future high-resolution astrometric measurements coulddecisively resolve the remaining ambiguity of these solutions.

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