Article (Scientific journals)
MOA-2010-BLG-328Lb: a sub-Neptune orbiting very late M dwarf ?
Furusawa, K.; Udalski, A.; Sumi, T. et al.
2013In Astrophysical Journal, 91
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Keywords :
Astrophysics - Earth and Planetary Astrophysics
Abstract :
[en] We analyze the planetary microlensing event MOA-2010-BLG-328. The best fit yields host and planetary masses of Mh = 0.11+/-0.01 M_{sun} and Mp = 9.2+/-2.2M_Earth, corresponding to a very late M dwarf and sub-Neptune-mass planet, 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 consider the possibility that the microlens parallax signal, which determines the host mass and distance, is actually due to xallarap (source orbital motion) that is being misinterpreted as parallax. We show a result that favors the parallax solution, even given its close host distance. We show that future high-resolution astrometric measurements could decisively resolve the remaining ambiguity of these solutions.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Furusawa, K.
Udalski, A.
Sumi, T.
Bennett, D. P.
Bond, I. A.
Gould, A.
Jorgensen, U. G.
Snodgrass, C.
Dominis Prester, D.
Albrow, M. D.
Abe, F.
Shin, I.-G.
Skowron, J.
Thornley, G.
Yee, J. C.
Alsubai, K. A.
Bozza, V.
Browne, P.
Burgdorf, M. J.
Calchi Novati, S.
Dodds, P.
Penny, M. T.
Dominik, M.
Finet, F.
Gerner, T.
Hardis, S.
Harpsoe, K.
Hinse, T. C.
Hundertmark, M.
Kains, N.
Kerins, E.
Liebig, C.
Proft, S.
Mancini, L.
Mathiasen, M.
Rahvar, S.
Ricci, Davide ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Scarpetta, G.
Schafer, S.
Schonebeck, F.
Southworth, J.
Surdej, Jean  ;  Université de Liège - ULiège
Wambsganss, J.
Black, C.
Street, R. A.
Bramich, D. M.
Steele, I. A.
Tsapras, Y.
Horne, K.
Donatowicz, J.
Sahu, K. C.
Bachelet, E.
Batista, V.
Beatty, T. G.
Bowens-Rubin, R.
Beaulieu, J.-P.
Bennett, C. S.
Brillant, S.
Caldwell, J. A. R.
Cassan, A.
Cole, A. A.
Corrales, E.
Coutures, C.
Dieters, S.
Fouque, P.
Botzler, C. S.
Greenhill, J.
Henderson, C. B.
Kubas, D.
Marquette, J.-B.
Martin, R.
Menzies, J. W.
Shappee, B.
Williams, A.
Wouters, D.
van Saders, J.
Chote, P.
Zellem, R.
Zub, M.
Freeman, M.
Fukui, A.
Harris, P.
Itow, Y.
Ling, C. H.
Masuda, K.
Matsubara, Y.
Miyake, N.
Muraki, Y.
Ohnishi, K.
Rattenbury, N. J.
Saito, To
Sullivan, D. J.
Suzuki, D.
Sweatman, W. L.
Tristram, P. J.
Wada, K.
Yock, P. C. M.
Szymanski, M. K.
Soszynski, I.
Kubiak, M.
Poleski, R.
Ulaczyk, K.
Pietrzynski, G.
Wyrzykowski, L.
Choi, J. Y.
Christie, G. W.
DePoy, D. L.
Dong, S.
Drummond, J.
Gaudi, B. S.
Han, C.
Hung, L.-W.
Jung, Y.-K.
Lee, C.-U.
McCormick, J.
Moorhouse, D.
Natusch, T.
Nola, M.
Ofek, E.
Park, B. G.
Park, H.
Pogge, R. W.
More authors (112 more) Less
Language :
English
Title :
MOA-2010-BLG-328Lb: a sub-Neptune orbiting very late M dwarf ?
Publication date :
2013
Journal title :
Astrophysical Journal
ISSN :
0004-637X
eISSN :
1538-4357
Publisher :
IOP Publishing, Bristol, United Kingdom
Volume :
91
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
30 pages, 6 figures. accepted for publication in ApJ. Figure 1 and 2 are updated
Available on ORBi :
since 21 November 2013

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