Gravitational Microlensing Survey with MOA II 1.8m Telescope

2012 Fiscal Year Final Research Report

• Project/Area Number: 22403003
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Nagoya University
• Principal Investigator: ABE Fumio 名古屋大学, 太陽地球環境研究所, 准教授 (80184224)
• Co-Investigator(Kenkyū-buntansha): MATSUBARA Yutaka 名古屋大学, 太陽地球環境研究所, 准教授 (80202323) ; OHNISHI Koji 長野工業高等専門学校, 一般科, 教授 (20290744) ; SAITO Toshiharu 東京都立産業技術高等専門学校, ものづくり工学科, 教授 (40259833)
• Co-Investigator(Renkei-kenkyūsha): SUMI Takahiro 大阪大学, 理学研究科, 准教授 (30432214) ; MASUDA Kimiaki 名古屋大学, 太陽地球環境研究所, 准教授 (40173744) ; SAKO Takashi 名古屋大学, 太陽地球環境研究所, 助授 (90324368)
• Project Period (FY): 2010 – 2012
• Keywords: 重力レンズ / 光学赤外線天文学 / 太陽系外惑星

Research Abstract

With gravitational microlensing method, we found five planets, several brown dwarfs,etc. Then we obtained mass ratio distribution and probability of planets. We discovered 10 free-floating planets and found that they are 1.8 times as abundant as main sequence stars.

Research Products

• [Journal Article] An M-dwarf with a Substellar Companion at the Planet/Brown (2013)
  • Author(s): Street, R. A. 他、 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: Dwarf Boundary Volume: 67
  • Peer Reviewed
• [Journal Article] Using Orbital Effects to Break the Close/Wide Degeneracy in Binary-lens Microlensing Events (2013)
  • Author(s): Shin, I.-G,他, Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: ApJ Volume: 764 Pages: 64
  • Peer Reviewed
• [Journal Article] Failed Planet = RS CVn Star (2013)
  • Author(s): Gould, A.,他、 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: ApJ Volume: 763 Pages: 141
  • Peer Reviewed
• [Journal Article] Microlensing Binaries with Candidate (2012)
  • Author(s): Shin, I.-G.他 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: Brown Dwarf Companions Volume: 116
  • Peer Reviewed
• [Journal Article] A Possible Binary System of a Stellar Remnant in the High-magnification Gravitational Microlensing Event (2012)
  • Author(s): Miyake, N.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: ApJ Volume: 752 Pages: 82
  • Peer Reviewed
• [Journal Article] A brown dwarf orbiting an M-dwarf: MOA 2009-BLG-411L (2012)
  • Author(s): Bachelet, E. 他、 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K.,Saito, To
  • Journal Title: A&A Volume: 547 Pages: 55
  • Peer Reviewed
• [Journal Article] Planetary and Other Short Binary Microlensing Events from the MOA Short-event Analysis (2012)
  • Author(s): Bennett, D. P. 他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: ApJ Volume: 757 Pages: 119
  • Peer Reviewed
• [Journal Article] A New Type of Ambiguity in the Planet and Binary Interpretations of Central Perturbations of High-magnification Gravitational Microlensing Events (2012)
  • Author(s): Choi, J.-Y.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: ApJ Volume: 756 Pages: 48
  • Peer Reviewed
• [Journal Article] first automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary (2012)
  • Author(s): Bozza, V.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: MNRAS Volume: 424 Pages: 902
  • Peer Reviewed
• [Journal Article] A Test of Pure Survey Microlensing Planet Detections (2012)
  • Author(s): Yee, J. C.他 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: ApJ Volume: 755 Pages: 102
  • Peer Reviewed
• [Journal Article] Characterizing Low-mass Binaries from Observation of Long-timescale Caustic-crossing Gravitational Microlensing Events (2012)
  • Author(s): Shin, I.-G.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: ApJ Volume: 755 Pages: 91
  • Peer Reviewed
• [Journal Article] Constraining the Mass of a Microlensing Planet from Microlensing Parallax, Orbital Motion, and Detection of Blended Light (2012)
  • Author(s): Bachelet, E. 他、 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: ApJ Volume: 754 Pages: 73
  • Peer Reviewed
• [Journal Article] Characterizing Lenses and Lensed Stars of High-magnification Single-lens Gravitational Microlensing Events with Lenses Passing over Source Stars (2012)
  • Author(s): Choi, J.-Y. 他、 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: ApJ Volume: 751 Pages: 41
  • Peer Reviewed
• [Journal Article] Microlensing Binaries Discovered through High-magnification Channel (2012)
  • Author(s): Shin, I.-G. 他、 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: ApJ Volume: 746 Pages: 127
  • Peer Reviewed
• [Journal Article] Unbound or distant planetary mass population detected by gravitational microlensing (2011)
  • Author(s): Sumi, T. 他、 Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: Nature Volume: 473 Pages: 349
  • Peer Reviewed
• [Journal Article] A Sub-Saturn Mass Planet (2011)
  • Author(s): Miyake, N.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: ApJ Volume: 728 Pages: 120
  • Peer Reviewed
• [Journal Article] Discovery and Mass Measurements of a Cold, 10 Earth Mass Planet and Its Host Star (2011)
  • Author(s): Muraki, Y.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: ApJ Volume: 741 Pages: 22
  • Peer Reviewed
• [Journal Article] Astrometric Image Centroid Displacements due to Gravitational Microlensing by the Ellis Wormhole (2011)
  • Author(s): Toki, Y.他、Abe, F
  • Journal Title: ApJ Volume: 740 Pages: 121
  • Peer Reviewed
• [Journal Article] Binary Microlensing Event OGLE-2009-BLG-020 Gives Verifiable Mass, Distance, and Orbit Predictions (2011)
  • Author(s): Skowron J.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: ApJ Volume: 738 Pages: 87
  • Peer Reviewed
• [Journal Article] characterization of a binary microlensing event based on survey data (2011)
  • Author(s): Hwang, K.-H. 他、 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: MNRAS Volume: 413 Pages: 1244
  • Peer Reviewed
• [Journal Article] MOA-2009-BLG-387Lb: a massive planet orbiting an M dwarf (2011)
  • Author(s): Batista, V. 他、 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: A&A Volume: 529 Pages: 102
  • Peer Reviewed
• [Journal Article] Measurements of Transit Timing Variations for WASP-5b (2011)
  • Author(s): Fukui, A.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y
  • Journal Title: PASJ Volume: 287 Pages: 63
  • Peer Reviewed
• [Journal Article] Gravitational Microlensing by the Ellis Wormhole (2010)
  • Author(s): Abe, F
  • Journal Title: ApJ Volume: 725 Pages: 787
  • Peer Reviewed
• [Journal Article] Frequency of Solar-like Systems and of Ice and Gas Giants Beyond the Snow Line from High-magnification Microlensing Events in 2005-2008 (2010)
  • Author(s): Gould, A.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: ApJ Volume: 720 Pages: 1073
  • Peer Reviewed
• [Journal Article] OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary (2010)
  • Author(s): Hwang, K.-H. 他、 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To
  • Journal Title: ApJ Volume: 723 Pages: 797
  • Peer Reviewed
• [Journal Article] OGLE-2009-BLG-092/MOA-2009-BLG-137: A Dramatic Repeating Event with the Second Perturbation Predicted by Real-time Analysis (2010)
  • Author(s): Ryu, Y.-H.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: ApJ Volume: 723 Pages: 81
  • Peer Reviewed
• [Journal Article] Determining the Physical Lens Parameters of the Binary Gravitational Microlensing Event MOA-2009-BLG-016 (2010)
  • Author(s): Hwang, K.-H. 他、 Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: ApJ Volume: 717 Pages: 435
  • Peer Reviewed
• [Journal Article] OGLE 2008-BLG-290: an accurate measurement of the limb darkening of a galactic bulge K Giant spatially resolved by microlensing (2010)
  • Author(s): Forque, P.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: A&A Volume: 518 Pages: 51
  • Peer Reviewed
• [Journal Article] Masses and Orbital Constraints for the OGLE-2006-BLG-109Lb,c Jupiter/Saturn Analog Planetary System (2010)
  • Author(s): Bennett, D. P.他、Sumi, T., Abe, F., Masuda, K., Matsubara, Y., Ohnishi, K., Saito, To.
  • Journal Title: ApJ Volume: 713 Pages: 837
  • Peer Reviewed
• [Presentation] MOA-II による snow lineの外側における惑星頻度 (2013)
  • Author(s): 鈴木大介、他 MOA
  • Organizer: 日本天文学会 2013年春季年会
  • Place of Presentation: 埼玉大学
  • Year and Date: 20130300
• [Presentation] MOA-II による系外惑星探査:2012 年の結果 (2013)
  • Author(s): 住 貴宏、他 MOA
  • Organizer: 日本天文学会 2013 年春季年会
  • Place of Presentation: 埼玉大学
  • Year and Date: 20130300
• [Presentation] MOA-II 望遠鏡を用いた重力マイクロレンズ法による惑星イベントの解析 (2013)
  • Author(s): 和田光平、他 MOA
  • Organizer: 日本天文学会 2013 年春季年会
  • Place of Presentation: 埼玉大学
  • Year and Date: 20130300
• [Presentation] MOA collaboration, New LMC observation strategy by MOA (2013)
  • Author(s): F. Abe
  • Organizer: 1st Doha International Astronomy Conference:"Gravitational Microlensing -101 years from theory to practice"
  • Place of Presentation: Qatar National Convention Centre (QNCC)
  • Year and Date: 20130210-13
• [Presentation] MOA collaboration, Planet frequency beyond the snow line from MOA-II observations in 2007-2011 (2013)
  • Author(s): D. Suzuki
  • Organizer: 1st Doha International Astronomy Conference:"GravitationalMicrolensing - 101 years from theory to practice
  • Place of Presentation: Qatar National Convention Centre (QNCC)
  • Year and Date: 20130210-13
• [Presentation] Wormhole hunting: methods and problems (2012)
  • Author(s): Abe, Fumio
  • Organizer: 研究会「ワームホール:その理論と観測的検証可能性」
  • Place of Presentation: 立教大学
  • Year and Date: 20121027-28
• [Presentation] MOA-IIによる系外惑星探査:2012年の経過報告 (2012)
  • Author(s): 住 貴宏、他MOA
  • Organizer: 日本天文学会2012年秋季年会
  • Place of Presentation: 大分大学
  • Year and Date: 20120900
• [Presentation] MOA-II による惑星の存在確率への制限 (2012)
  • Author(s): 鈴木大介、他 MOA
  • Organizer: 日本天文学会 2012 年秋季年会
  • Place of Presentation: 大分大学
  • Year and Date: 20120900
• [Presentation] 重力マイクロレンズサーベイ観測による惑星イベント候補の発見:MOA-2008-BLG-288 (2012)
  • Author(s): 滝野 奨, 他 MOA
  • Organizer: 日本天文学会 2012年秋季年会
  • Place of Presentation: 大分大学
  • Year and Date: 20120900
• [Presentation] 惑星を伴う重力マイクロレンズイベント MOA 2008-BLG-379 (2012)
  • Author(s): 鈴木浩太、他 MOA
  • Organizer: 日本天文学会 2012 年秋季年会
  • Place of Presentation: 大分大学
  • Year and Date: 20120900
• [Presentation] 重力マイクロレンズによる原始ブラックホール探索法 (2012)
  • Author(s): 阿部文雄、他 MOA
  • Organizer: 日本天文学会 2012 年秋季年会
  • Place of Presentation: 大分大学
  • Year and Date: 20120900
• [Presentation] MOA-IIによるM型矮星における惑星系及び連星系の質量比関数 (2012)
  • Author(s): 神原周平
  • Organizer: 日本天文学会春期年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-22
• [Presentation] 惑星イベント: MOA-2010-BLG-328 (2012)
  • Author(s): 古澤圭
  • Organizer: 日本天文学会春期年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-22
• [Presentation] MOA-II における系外惑星探査:2011年の結果 (2012)
  • Author(s): 鈴木大介
  • Organizer: 日本天文学会春期年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-22
• [Presentation] 冷却InGaAsカメラC10633-34のノイズ評価試験 (2012)
  • Author(s): 滝野奨
  • Organizer: 日本天文学会春期年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-22
• [Presentation] MOA-IIで観測された惑星系を含む連星イベントの解析 (2011)
  • Author(s): 神原周平
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-21
• [Presentation] 低増光率重力マイクロレンズイベントにおける惑星の検出効率 (2011)
  • Author(s): 鈴木大介
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-21
• [Presentation] TTV法を用いた、ホットジュピターと共鳴軌道の惑星の存在確率の計算 (2011)
  • Author(s): 福井暁彦
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-21
• [Presentation] MOA II gravitational microlensing survey (2011)
  • Author(s): Fumio, Abe
  • Organizer: Frontiers of Quantum and Mesoscopic Thermodynamics
  • Place of Presentation: Prague, Czech
  • Year and Date: 2011-07-27
• [Presentation] Planet distribution beyond the snow line by gravitational microlensing (2011)
  • Author(s): Takahiro Sumi
  • Organizer: 第7回太陽系外惑星大研究会
  • Place of Presentation: 国立天文台(三鷹)
  • Year and Date: 2011-03-09
• [Presentation] Planetary microlensing event MOA-2010-BLG-328 (2011)
  • Author(s): Kei Furusawa
  • Organizer: 第7回太陽系外惑星大研究会
  • Place of Presentation: 国立天文台(三鷹)
  • Year and Date: 2011-03-09
• [Presentation] MOA-IIによる系外惑星探査:2010年の結果 (2011)
  • Author(s): 三宅範幸
  • Organizer: 日本天文学会2011年春期年会
  • Place of Presentation: 要旨集
  • Year and Date: 2011-01-27
• [Presentation] 低増光率重力マイクロレンズイベントにおける検出効率 (2011)
  • Author(s): 鈴木大介
  • Organizer: 日本天文学会2011年春期年会
  • Place of Presentation: 要旨集
  • Year and Date: 2011-01-27
• [Presentation] Planetary microlensing event MOA-2010-BLG-328 (2011)
  • Author(s): 古澤圭
  • Organizer: 日本天文学会2011年春期年会
  • Place of Presentation: 要旨集
  • Year and Date: 2011-01-27
• [Presentation] MOA-2010-BLG-523の隠れた惑星 (2011)
  • Author(s): 神原周平
  • Organizer: 日本天文学会2011年春期年会
  • Place of Presentation: 要旨集
  • Year and Date: 2011-01-27
• [Presentation] 重力マイクロレンズ法による、MOA-II望遠鏡を用いたMACHOs探索 (2011)
  • Author(s): 林文也
  • Organizer: 日本天文学会2011年春期年会
  • Place of Presentation: 要旨集
  • Year and Date: 2011-01-27
• [Presentation] 重力マイクロレンズによるワームホール探索2 (2011)
  • Author(s): 阿部文雄
  • Organizer: 日本天文学会2011年春期年会
  • Place of Presentation: 要旨集
  • Year and Date: 2011-01-27
• [Presentation] Gravitational microlensing by the Ellis wormhole (2011)
  • Author(s): Abe, Fumio
  • Organizer: The 15thInternational Conference on Gravitational Microlensing
  • Place of Presentation: Salerno, Itary
  • Year and Date: 2011-01-22
• [Presentation] Planetary microlensing event MOA-2010-BLG-328 (2011)
  • Author(s): Kei Furusawa
  • Organizer: The 15thInternational Conference on Gravitational Microlensing
  • Place of Presentation: Salerno, Itary
  • Year and Date: 2011-01-21
• [Presentation] MOA-II observation in 2010 season (2011)
  • Author(s): Takahiro Sumi
  • Organizer: The 15thInternational Conference on Gravitational Microlensing
  • Place of Presentation: Salerno, Itary
  • Year and Date: 2011-01-20
• [Presentation] MOA-IIによる系外惑星探査: 2009年の結果と2010年の経過報告 (2010)
  • Author(s): 住貴宏
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 金沢大学
  • Year and Date: 2010-09-23
• [Presentation] 最小質量比重力マイクロレンズイベントMOA-2009-BLG-266の検出効率 (2010)
  • Author(s): 鈴木大介
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 金沢大学
  • Year and Date: 2010-09-23
• [Presentation] 惑星マイクロレンズイベント:MOA-2009-BLG-319 (2010)
  • Author(s): 三宅範幸
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 金沢大学
  • Year and Date: 2010-09-23
• [Presentation] 重力マイクロレンズ法による、MOA II望遠鏡を用いたMACHOs探索 (2010)
  • Author(s): 林文也
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 金沢大学
  • Year and Date: 2010-09-23
• [Presentation] 重力マイクロレンズイベントMOA-2010-BLG-073 (2010)
  • Author(s): 古澤圭
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 金沢大学
  • Year and Date: 2010-09-23
• [Presentation] 重力マイクロレンズを利用したワームホール探索 (2010)
  • Author(s): 阿部文雄
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 金沢大学
  • Year and Date: 2010-09-23
• [Presentation] 重力マイクロレンズ効果を利用したワームホール探索 (2010)
  • Author(s): 阿部文雄
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 九州工業大学
  • Year and Date: 2010-09-11
• [Remarks]
  • URL: http://www.phys.canterbury.ac.nz/moa/