MOA-2013-BLG-220Lb: massive planetary companion to galactic-disk host

J.C. Yee, C. Han, A. Gould, J. Skowron, I.A. Bond, A. Udalski, M. Hundertmark, L.A.G. Monard, I. Porritt, P. Nelson, V. Bozza, M.D. Albrow, J.-Y. Choi, G.W. Christie, D.L. Depoy, B.S. Gaudi, K.-H. Hwang, Y.K. Jung, C.-U. Lee, J. McCormickT. Natusch, H. Ngan, H. Park, R.W. Pogge, I.-G. Shin, T.-G. Tan, F. Abe, D.P. Bennett, C.S. Botzler, M. Freeman, A. Fukui, D. Fukunaga, Y. Itow, N. Koshimoto, P. Larsen, C.H. Ling, K. Masuda, Y. Matsubara, Y. Muraki, S. Namba, K. Ohnishi, L. Philpott, N.J. Rattenbury, T. Saito, D.J. Sullivan, T. Sumi, W.L. Sweatman, D. Suzuki, P.J. Tristram, N. Tsurumi, K. Wada, N. Yamai, P.C.M. Yock, A. Yonehara, M.K. Szymański, K. Ulaczyk, S. Kozłowski, R. Poleski, Ł. Wyrzykowski, M. Kubiak, P. Pietrukowicz, G. Pietrzyński, I. Soszyński, D.M. Bramich, P. Browne, R. Figuera Jaimes, K. Horne, S. Ipatov, N. Kains, C. Snodgrass, I.A. Steele, R. Street, Y. Tsapras

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Abstract

We report the discovery of MOA-2013-BLG-220Lb, which has a super-Jupiter mass ratio q = 3.01 ± 0.02 × 10-3 relative to its host. The proper motion, μ = 12.5 ± 1 mas yr-1, is one of the highest for microlensing planets yet discovered, implying that it will be possible to separately resolve the host within ∼7 yr. Two separate lines of evidence imply that the planet and host are in the Galactic disk. The planet could have been detected and characterized purely with follow-up data, which has important implications for microlensing surveys, both current and into the Large Synoptic Survey Telescope (LSST) era.

Original languageEnglish
Number of pages7
JournalAstrophysical Journal
Volume790
Issue number1
DOIs
Publication statusPublished - 20 Jul 2014

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