MOA 2010-BLG-477Lb: CONSTRAINING THE MASS OF A MICROLENSING PLANET FROM MICROLENSING PARALLAX, ORBITAL MOTION, AND DETECTION OF BLENDED LIGHT

E. Bachelet; I. -G. Shin; C. Han; P. Fouque; A. Gould; J. W. Menzies; J. -P. Beaulieu; D. P. Bennett; I. A. Bond; Subo Dong; D. Heyrovsky; J. -B. Marquette; J. Marshall; J. Skowron; R. A. Street; T. Sumi; A. Udalski; L. Abe; K. Agabi; M. D. Albrow; W. Allen; E. Bertin; M. Bos; D. M. Bramich; J. Chavez; G. W. Christie; A. A. Cole; N. Crouzet; S. Dieters; M. Dominik; J. Drummond; J. Greenhill; T. Guillot; C. B. Henderson; F. V. Hessman; K. Horne; M. Hundertmark; J. A. Johnson; U. G. Jorgensen; R. Kandori; C. Liebig; D. Mekarnia; J. McCormick; D. Moorhouse; T. Nagayama; D. Nataf; T. Natusch; S. Nishiyama; J. -P. Rivet; K. C. Sahu; Y. Shvartzvald; G. Thornley; A. R. Tomczak; Y. Tsapras; J. C. Yee; V. Batista; C. S. Bennett; S. Brillant; J. A. R. Caldwell; A. Cassan; E. Corrales; C. Coutures; D. Dominis Prester; J. Donatowicz; D. Kubas; R. Martin; A. Williams; M. Zub; L. Andrade de Almeida; D. L. DePoy; B. S. Gaudi; L. -W. Hung; F. Jablonski; S. Kaspi; N. Klein; C. -U. Lee; Y. Lee; J. -R. Koo; D. Maoz; J. A. Munoz; R. W. Pogge; D. Polishook; A. Shporer; F. Abe; C. S. Botzler; P. Chote; M. Freeman; A. Fukui; K. Furusawa; P. Harris; Y. Itow; S. Kobara; C. H. Ling; K. Masuda; Y. Matsubara; N. Miyake; K. Ohmori; K. Ohnishi; N. J. Rattenbury; To Saito; D. J. Sullivan; D. Suzuki; W. L. Sweatman; P. J. Tristram; K. Wada; P. C. M. Yock; M. K. Szymanski; I. Soszynski; M. Kubiak; R. Poleski; K. Ulaczyk; G. Pietrzynski; L. Wyrzykowski; N. Kains; C. Snodgrass; I. A. Steele; K. A. Alsubai; V. Bozza; P. Browne; M. J. Burgdorf; S. Calchi Novati; P. Dodds; S. Dreizler; F. Finet; T. Gerner; S. Hardis; K. Harpsoe; T. C. Hinse; E. Kerins; L. Mancini; M. Mathiasen; M. T. Penny; S. Proft; S. Rahvar; D. Ricci; G. Scarpetta; S. Schaefer; F. Schoenebeck; J. Southworth; J. Surdej; J. Wambsganss; MiNDSTEp Consortium

doi:10.1088/0004-637X/754/1/73

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MOA 2010-BLG-477Lb: CONSTRAINING THE MASS OF A MICROLENSING PLANET FROM MICROLENSING PARALLAX, ORBITAL MOTION, AND DETECTION OF BLENDED LIGHT

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MOA 2010-BLG-477Lb: CONSTRAINING THE MASS OF A MICROLENSING PLANET FROM MICROLENSING PARALLAX, ORBITAL MOTION, AND DETECTION OF BLENDED LIGHT

E. Bachelet, I. -G. Shin, C. Han, P. Fouque, A. Gould, J. W. Menzies, J. -P. Beaulieu, D. P. Bennett, I. A. Bond, Subo Dong, …

The Astrophysical journal, Vol.754(1), pp.1-17

07/20/2012

DOI: 10.1088/0004-637X/754/1/73

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Abstract

Microlensing detections of cool planets are important for the construction of an unbiased sample to estimate the frequency of planets beyond the snow line, which is where giant planets are thought to form according to the core accretion theory of planet formation. In this paper, we report the discovery of a giant planet detected from the analysis of the light curve of a high-magnification microlensing event MOA 2010-BLG-477. The measured planet-star mass ratio is q = (2.181 +/- 0.004) x 10(-3) and the projected separation is s = 1.1228 +/- 0.0006 in units of the Einstein radius. The angular Einstein radius is unusually large theta(E) = 1.38 +/- 0.11 mas. Combining this measurement with constraints on the "microlens parallax" and the lens flux, we can only limit the host mass to the range 0.13 < M/M-circle dot < 1.0. In this particular case, the strong degeneracy between microlensing parallax and planet orbital motion prevents us from measuring more accurate host and planet masses. However, we find that adding Bayesian priors from two effects (Galactic model and Keplerian orbit) each independently favors the upper end of this mass range, yielding star and planet masses of M-* = 0.67(-0.13)(+0.33) M-circle dot and m(p) = 1.5(-0.3)(+0.8) M-JUP at a distance of D = 2.3 +/- 0.6 kpc, and with a semi-major axis of a = 2(-1)(+3) AU. Finally, we show that the lens mass can be determined from future high-resolution near-IR adaptive optics observations independently from two effects, photometric and astrometric.

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Title: Subtitle: MOA 2010-BLG-477Lb: CONSTRAINING THE MASS OF A MICROLENSING PLANET FROM MICROLENSING PARALLAX, ORBITAL MOTION, AND DETECTION OF BLENDED LIGHT
Creators: E. Bachelet - Université Fédérale de Toulouse Midi-Pyrénées
I. -G. Shin - Chungbuk National University
C. Han - Chungbuk National University
P. Fouque - Université Fédérale de Toulouse Midi-Pyrénées
A. Gould - The Ohio State University
J. W. Menzies - South African Radio Astronomy Observatory
J. -P. Beaulieu - Sorbonne Université
D. P. Bennett - University of Notre Dame
I. A. Bond - Massey University
Subo Dong - The Ohio State University
D. Heyrovsky - Charles University
J. -B. Marquette - Centre National de la Recherche Scientifique
J. Marshall - The Ohio State University
J. Skowron - The Ohio State University
R. A. Street - Las Cumbres Observatory Global Telescope Network
T. Sumi - The University of Osaka
A. Udalski - University of Warsaw
L. Abe - Observatoire de la Côte d’Azur
K. Agabi - Observatoire de la Côte d’Azur
M. D. Albrow - University of Canterbury
W. Allen - Carter Observatory
E. Bertin - Sorbonne Université
M. Bos - Molehill Astron Observ, N Shore, New Zealand
D. M. Bramich - European Southern Observatory
J. Chavez - McDonald Observ, Ft Davis, TX 79734 USA
G. W. Christie - Carter Observatory
A. A. Cole - University of Tasmania
N. Crouzet - Observatoire de la Côte d’Azur
S. Dieters - University of Tasmania
M. Dominik - University of St Andrews
J. Drummond - Possum Observatory
J. Greenhill - University of Tasmania
T. Guillot - Observatoire de la Côte d’Azur
C. B. Henderson - The Ohio State University
F. V. Hessman - University of Göttingen
K. Horne - University of St Andrews
M. Hundertmark - University of St Andrews
J. A. Johnson - The Ohio State University
U. G. Jorgensen - University of Copenhagen
R. Kandori - Natl Astron Observ, Mitaka, Tokyo 1818588, Japan
C. Liebig - University of St Andrews
D. Mekarnia - Observatoire de la Côte d’Azur
J. McCormick - Carter Observatory
D. Moorhouse - Kumeu Observatory
T. Nagayama - Nagoya University
D. Nataf - The Ohio State University
T. Natusch - Auckland University of Technology
S. Nishiyama - National Astronomical Observatory of Japan
J. -P. Rivet - Observatoire de la Côte d’Azur
K. C. Sahu - Space Telescope Science Institute
Y. Shvartzvald - Tel Aviv University
G. Thornley - Kumeu Observatory
A. R. Tomczak - Texas A&M University
Y. Tsapras - Queen Mary University of London
J. C. Yee - The Ohio State University
V. Batista - The Ohio State University
C. S. Bennett - Massachusetts Institute of Technology
S. Brillant - European Southern Observatory
J. A. R. Caldwell
A. Cassan - Sorbonne Université
E. Corrales - Sorbonne Université
C. Coutures - Sorbonne Université
D. Dominis Prester - University of Tasmania
J. Donatowicz - TU Wien
D. Kubas - Sorbonne Université
R. Martin - Perth Observatory
A. Williams - Perth Observatory
M. Zub - Heidelberg University
L. Andrade de Almeida - Instituto Nacional de Pesquisas Espaciais
D. L. DePoy - Texas A&M University
B. S. Gaudi - The Ohio State University
L. -W. Hung - The Ohio State University
F. Jablonski - Instituto Nacional de Pesquisas Espaciais
S. Kaspi - Tel Aviv University
N. Klein - Tel Aviv University
C. -U. Lee - Korea Astronomy and Space Science Institute
Y. Lee - Korea Astronomy and Space Science Institute
J. -R. Koo - Korea Astron & Space Sci Inst, Taejon 305348, South Korea
D. Maoz - Tel Aviv University
J. A. Munoz - Universitat de València
R. W. Pogge - The Ohio State University
D. Polishook - Tel Aviv University
A. Shporer - Nagoya University
F. Abe - Nagoya University
C. S. Botzler - University of Auckland
P. Chote - Victoria Univ, Sch Chem & Phys Sci, Wellington, New Zealand
M. Freeman - University of Auckland
A. Fukui - National Astronomical Observatory of Japan
K. Furusawa - Nagoya University
P. Harris - Victoria Univ, Sch Chem & Phys Sci, Wellington, New Zealand
Y. Itow - Nagoya University
S. Kobara - Nagoya University
C. H. Ling - Massey University
K. Masuda - Nagoya University
Y. Matsubara - Nagoya University
N. Miyake - Nagoya University
K. Ohmori - Nagoya University
K. Ohnishi - National Institute of Technology, Nagano College
N. J. Rattenbury - University of Auckland
To Saito - Tokyo Metropolitan Coll Aeronaut, Tokyo 1168523, Japan
D. J. Sullivan - Victoria Univ, Sch Chem & Phys Sci, Wellington, New Zealand
D. Suzuki - The University of Osaka
W. L. Sweatman - Massey University
P. J. Tristram - St John New Zealand
K. Wada - The University of Osaka
P. C. M. Yock - The University of Osaka
M. K. Szymanski - University of Warsaw
I. Soszynski - University of Warsaw
M. Kubiak - University of Warsaw
R. Poleski - University of Warsaw
K. Ulaczyk - University of St Andrews
G. Pietrzynski - University of Warsaw
L. Wyrzykowski - University of Warsaw
N. Kains - European So Observ, D-85748 Garching, Germany
C. Snodgrass - University of St Andrews
I. A. Steele - Liverpool John Moores University
K. A. Alsubai - Qatar Foundation
V. Bozza - University of Salerno
P. Browne - University of St Andrews
M. J. Burgdorf - University of Salerno
S. Calchi Novati - Ames Research Center
P. Dodds - University of St Andrews
S. Dreizler - University of Göttingen
F. Finet - University of Liège
T. Gerner - Heidelberg Univ, Zentrum Astron, Astron Rech Inst, D-69120 Heidelberg, Germany
S. Hardis - University of Copenhagen
K. Harpsoe - University of Copenhagen
T. C. Hinse - Heidelberg University
E. Kerins - University of Manchester
L. Mancini - Max Planck Institute for Astronomy
M. Mathiasen - University of Copenhagen
M. T. Penny - University of Copenhagen
S. Proft - Heidelberg Univ, Zentrum Astron, Astron Rech Inst, D-69120 Heidelberg, Germany
S. Rahvar - Keele University
D. Ricci - University of Liège
G. Scarpetta - University of Salerno
S. Schaefer - University of Göttingen
F. Schoenebeck - Heidelberg Univ, Zentrum Astron, Astron Rech Inst, D-69120 Heidelberg, Germany
J. Southworth - Univ Keele, Astrophys Grp, Keele ST5 5BG, Staffs, England
J. Surdej - Inst Astrophys & Geophys, B-4000 Liege, Belgium
J. Wambsganss - Heidelberg Univ, Zentrum Astron, Astron Rech Inst, D-69120 Heidelberg, Germany
MiNDSTEp Consortium
Resource Type: Journal article
Publication Details: The Astrophysical journal, Vol.754(1), pp.1-17
DOI: 10.1088/0004-637X/754/1/73
ISSN: 0004-637X
eISSN: 1538-4357
Publisher: Iop Publishing Ltd
Number of pages: 17
Grant note: JSPS20340052; JSPS22403003 / MOA Observatoire de la Cote d'Azur 246678 / European Research Council under the European Community's Seventh Framework Programme/ERC; European Research Council (ERC) AST-1103471; 2009068160 / NSF; National Science Foundation (NSF) 2009-0081561 / National Research Foundation of Korea ANR PNPS; Agence Nationale de la Recherche (ANR) ANR; Agence Nationale de la Recherche (ANR) California Institute of Technology (Caltech) KRCF Young Scientist Research Fellowship Program in South Korea 23340044; 23654082; 24103508; 22403003; 23340064; 23540339 / Grants-in-Aid for Scientific Research; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science; Grants-in-Aid for Scientific Research (KAKENHI)
Language: English
Date published: 07/20/2012
Academic Unit: Physics and Astronomy
Record Identifier: 9984701831502771

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