Search for extrasolar planets with microlensing

• Project/Area Number: 16H05732
• 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, 宇宙地球環境研究所, 准教授 (80184224)
• Co-Investigator(Kenkyū-buntansha): 米原 厚憲 京都産業大学, 理学部, 教授 (10454472) ; 松原 豊 名古屋大学, 宇宙地球環境研究所, 准教授 (80202323)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000); Fiscal Year 2019: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2018: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2017: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2016: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
• Keywords: 太陽系外惑星 / 重力レンズ / 光学赤外線天文学 / 惑星科学 / 惑星形成 / 星・惑星形成 / 光学・赤外線天文学 / 可視赤外線天文学

Outline of Final Research Achievements

Studies of extrasolar planets i.e. planets moving around distant stars are expected to find some hints for extraterretrial lives or formation of planets.Microlensing is using apparent brightning of a distant star by gravitational lensing to find planets around the front star. This method is sensitive to small planet like Earth in the distant orbit i.e. outside of the "snow line".
We have studied extrasolar planets using microlensing and 1.8 m telescope in New Zealand. Excluding observation bias, we have obtained the distribution of planets outside of the snow line. The result shows increase of the abundance of the planets as the decrease of the palnet mass. But it reaches a limit around the Neptune pass. This finding is expecetd to provide important information to the formation theories of planets.

Academic Significance and Societal Importance of the Research Achievements

太陽系外惑星の研究は、地球外生命や惑星形成の理解に重要な知見を与えることが期待され、今世紀の天文学の最重要課題である。マイクロレンズ法は、小型の望遠鏡で実施可能な手法で、木星の様な巨大惑星の形成領域を深く探索できるユニークな手法である。
太陽系外惑星は、大きなものほど発見しやすく、発見された惑星数は大きなものに偏っている。しかし、こうしたバイアスを除いた真の分布は、小さいものほど多いことが期待される。我々は、マイクロレンズ法による惑星探索を実施し、統計処理を行うことにより、惑星の真の分布をステイした。その結果、惑星は軽いものほど多くなるが、海王星質量程度で頭打ちになることが判明した。

Research Products

• [Int'l Joint Research] University of Auckland/Massey University/University of Canterbury(ニュージーランド)
• [Int'l Joint Research] University of Merryland/NASA(米国)
• [Int'l Joint Research] Auckland University/Massey University/University of Canterbury(New Zealand)
• [Int'l Joint Research] University of Meryland/NASA Goddard Space Flight Center(米国)
• [Journal Article] OGLE-2018-BLG-1700L: Microlensing Planet in Binary Stellar System (2020)
  • Author(s): Han Cheongho、et al.
  • Journal Title: The Astronomical Journal Volume: 159 Issue: 2 Pages: 48-48
  • DOI: 10.3847/1538-3881/ab5db9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2013-BLG-0911Lb: A Secondary on the Brown-dwarf Planet Boundary around an M Dwarf (2020)
  • Author(s): Miyazaki Shota、et al.
  • Journal Title: The Astronomical Journal Volume: 159 Issue: 2 Pages: 76-76
  • DOI: 10.3847/1538-3881/ab64de
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge (2020)
  • Author(s): Zang Weicheng、et al.
  • Journal Title: The Astrophysical Journal Volume: 891 Issue: 1 Pages: 3-3
  • DOI: 10.3847/1538-4357/ab6ff8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2018-BLG-0022: First Prediction of an Astrometric Microlensing Signal from a Photometric Microlensing Event (2019)
  • Author(s): Han Cheongho、et al.
  • Journal Title: The Astrophysical Journal Volume: 876 Issue: 1 Pages: 81-81
  • DOI: 10.3847/1538-4357/ab1539
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2015-BLG-1670Lb: A Cold Neptune beyond the Snow Line in the Provisional WFIRST Microlensing Survey Field (2019)
  • Author(s): Ranc Clement、et al.
  • Journal Title: The Astronomical Journal Volume: 157 Issue: 6 Pages: 232-232
  • DOI: 10.3847/1538-3881/ab141b
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Spitzer Parallax of OGLE-2018-BLG-0596: A Low-mass-ratio Planet around an M Dwarf (2019)
  • Author(s): Jung Youn Kil、et al.
  • Journal Title: The Astronomical Journal Volume: 158 Issue: 1 Pages: 28-28
  • DOI: 10.3847/1538-3881/ab237f
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] An analysis of binary microlensing event OGLE-2015-BLG-0060 (2019)
  • Author(s): Tsapras Y、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 487 Issue: 4 Pages: 4603-4614
  • DOI: 10.1093/mnras/stz1404
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Spectroscopic Mass and Host-star Metallicity Measurements for Newly Discovered Microlensing Planet OGLE-2018-BLG-0740Lb (2019)
  • Author(s): Han Cheongho、et al.
  • Journal Title: The Astronomical Journal Volume: 158 Issue: 3 Pages: 102-102
  • DOI: 10.3847/1538-3881/ab2df4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2018-BLG-1011Lb,c: Microlensing Planetary System with Two Giant Planets Orbiting a Low-mass Star (2019)
  • Author(s): Han Cheongho、et al.
  • Journal Title: The Astronomical Journal Volume: 158 Issue: 3 Pages: 114-114
  • DOI: 10.3847/1538-3881/ab2f74
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2017-BLG-1186: first application of asteroseismology and Gaussian processes to microlensing (2019)
  • Author(s): Li S-S、Zang W、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 488 Issue: 3 Pages: 3308-3323
  • DOI: 10.1093/mnras/stz1873
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The 2L1S/1L2S Degeneracy for Two Microlensing Planet Candidates Discovered by the KMTNet Survey in 2017 (2019)
  • Author(s): Shin I.-G.、et al.
  • Journal Title: The Astronomical Journal Volume: 158 Issue: 5 Pages: 199-199
  • DOI: 10.3847/1538-3881/ab46a5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2015-BLG-1649Lb: A Gas Giant Planet around a Low-mass Dwarf (2019)
  • Author(s): Nagakane M.、et al.
  • Journal Title: The Astronomical Journal Volume: 158 Issue: 5 Pages: 212-212
  • DOI: 10.3847/1538-3881/ab4881
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MOA-bin-29b: A Microlensing Gas-giant Planet Orbiting a Low-mass Host Star (2019)
  • Author(s): Kondo Iona、et al.
  • Journal Title: The Astronomical Journal Volume: 158 Issue: 6 Pages: 224-224
  • DOI: 10.3847/1538-3881/ab4e9e
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Two new free-floating or wide-orbit planets from microlensing (2019)
  • Author(s): Mroz Przemek他
  • Journal Title: Astronomy & Astrophysics Volume: 622 Pages: A201-A201
  • DOI: 10.1051/0004-6361/201834557
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Spitzer Microlensing of MOA-2016-BLG-231L: A Counter-rotating Brown Dwarf Binary in the Galactic Disk (2019)
  • Author(s): Chung Sun-Ju他
  • Journal Title: The Astrophysical Journal Volume: 871 Issue: 2 Pages: 179-179
  • DOI: 10.3847/1538-4357/aaf861
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Spitzer Microlensing Parallax for OGLE-2016-BLG-1067: A Sub-Jupiter Orbiting an M Dwarf in the Disk (2019)
  • Author(s): Calchi Novati S.他
  • Journal Title: The Astronomical Journal Volume: 157 Issue: 3 Pages: 121-121
  • DOI: 10.3847/1538-3881/ab0106
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2014-BLG-0962 and a Comparison of Galactic Model Priors to Microlensing Data (2019)
  • Author(s): Shan Yutong他
  • Journal Title: The Astrophysical Journal Volume: 873 Issue: 1 Pages: 30-30
  • DOI: 10.3847/1538-4357/ab0021
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2017-BLG-0482Lb: A Microlensing Super-Earth Orbiting a Low-mass Host Star (2018)
  • Author(s): Han C.他
  • Journal Title: The Astronomical Journal Volume: 155 Issue: 5 Pages: 211-211
  • DOI: 10.3847/1538-3881/aabad2
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2015-BLG-1459L: The Challenges of Exo-moon Microlensing (2018)
  • Author(s): Hwang K.-H.他
  • Journal Title: The Astronomical Journal Volume: 155 Issue: 6 Pages: 259-259
  • DOI: 10.3847/1538-3881/aac2cb
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A Likely Detection of a Two-planet System in a Low-magnification Microlensing Event (2018)
  • Author(s): Suzuki D.他
  • Journal Title: The Astronomical Journal Volume: 155 Issue: 6 Pages: 263-263
  • DOI: 10.3847/1538-3881/aabd7a
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A Planetary Microlensing Event with an Unusually Red Source Star: MOA-2011-BLG-291 (2018)
  • Author(s): Bennett David P.他
  • Journal Title: The Astronomical Journal Volume: 156 Issue: 3 Pages: 113-113
  • DOI: 10.3847/1538-3881/aad59c
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MOA-2015-BLG-337: A Planetary System with a Low-mass Brown Dwarf/Planetary Boundary Host, or a Brown Dwarf Binary (2018)
  • Author(s): Miyazaki S.他
  • Journal Title: The Astronomical Journal Volume: 156 Issue: 3 Pages: 136-136
  • DOI: 10.3847/1538-3881/aad5ee
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MOA-2016-BLG-319Lb: Microlensing Planet Subject to Rare Minor-image Perturbation Degeneracy in Determining Planet Parameters (2018)
  • Author(s): Han Cheongho他
  • Journal Title: The Astronomical Journal Volume: 156 Issue: 5 Pages: 226-226
  • DOI: 10.3847/1538-3881/aae38e
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2017-BLG-0039: Microlensing Event with Light from a Lens Identified from Mass Measurement (2018)
  • Author(s): Han C.他
  • Journal Title: The Astrophysical Journal Volume: 867 Issue: 2 Pages: 136-136
  • DOI: 10.3847/1538-4357/aae536
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A study of the light travel time effect in short-period MOA eclipsing binaries via eclipse timing (2018)
  • Author(s): Li M C A、Rattenbury N J、Bond I A、Sumi T、Bennett D P、Koshimoto N、Abe F、Asakura Y、Barry R、Bhattacharya A、Donachie M、Evans P、Fukui A、Hirao Y、Itow Y、Masuda K、Matsubara Y、Muraki Y、Nagakane M、Ohnishi K、Saito To、Sharan A、Sullivan D J、Suzuki D、Tristram P J、Yonehara A
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 480 Issue: 4 Pages: 4557-4577
  • DOI: 10.1093/mnras/sty2104
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] First Assessment of the Binary Lens OGLE-2015-BLG-0232 (2018)
  • Author(s): Bachelet E.他
  • Journal Title: The Astrophysical Journal Volume: 870 Issue: 1 Pages: 11-11
  • DOI: 10.3847/1538-4357/aaedb9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A Detailed Observational Analysis of V1324 Sco, the Most Gamma-Ray-luminous Classical Nova to Date (2018)
  • Author(s): Finzell Thomas、et al.
  • Journal Title: The Astrophysical Journal Volume: 852 Issue: 2 Pages: 108-108
  • DOI: 10.3847/1538-4357/aaa12a
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2014-BLG-0289: Precise Characterization of a Quintuple-peak Gravitational Microlensing Event (2018)
  • Author(s): Udalski A.、et al.
  • Journal Title: The Astrophysical Journal Volume: 853 Issue: 1 Pages: 70-70
  • DOI: 10.3847/1538-4357/aaa295
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The First Planetary Microlensing Event with Two Microlensed Source Stars (2018)
  • Author(s): Bennett D. P.、et al.
  • Journal Title: The Astronomical Journal Volume: 155 Issue: 3 Pages: 141-141
  • DOI: 10.3847/1538-3881/aaadfa
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru Hyper Suprime-Cam Survey for an optical counterpart of GW170817‡ (2018)
  • Author(s): Tominaga Nozomu , Tanaka Masaomi , Morokuma Tomoki , Utsumi Yousuke , Yamaguchi Masaki S , Yasuda Naoki , Tanaka Masayuki , Yoshida Michitoshi , Fujiyoshi Takuya , Furusawa Hisanori , et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 2 Pages: 28-28
  • DOI: 10.1093/pasj/psy007
  • NAID: 120006537077
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Faint-source-star planetary microlensing: the discovery of the cold gas-giant planet OGLE-2014-BLG-0676Lb (2017)
  • Author(s): Rattenbury, N. J., Bennett, D. P., Sumi, T., Koshimoto, N., et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 466 Issue: 3 Pages: 2710-2717
  • DOI: 10.1093/mnras/stw3185
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] OGLE-2016-BLG-1003: First Resolved Caustic-crossing Binary-source Event Discovered by Second-generation Microlensing Surveys (2017)
  • Author(s): Jung Y. K.、et al.
  • Journal Title: The Astrophysical Journal Volume: 841 Issue: 2 Pages: 75-75
  • DOI: 10.3847/1538-4357/aa7057
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2013-BLG-1761Lb: A Massive Planet around an M/K Dwarf (2017)
  • Author(s): Hirao Y.、et al.
  • Journal Title: The Astronomical Journal Volume: 154 Issue: 1 Pages: 1-1
  • DOI: 10.3847/1538-3881/aa73da
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MOA-2016-BLG-227Lb: A Massive Planet Characterized by Combining Light-curve Analysis and Keck AO Imaging (2017)
  • Author(s): Koshimoto N.、et al.
  • Journal Title: The Astronomical Journal Volume: 154 Issue: 1 Pages: 3-3
  • DOI: 10.3847/1538-3881/aa72e0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MOA-2012-BLG-505Lb: A Super-Earth-mass Planet That Probably Resides in the Galactic Bulge (2017)
  • Author(s): Nagakane M.、et al.
  • Journal Title: The Astronomical Journal Volume: 154 Issue: 1 Pages: 35-35
  • DOI: 10.3847/1538-3881/aa74b2
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2016-BLG-1469L: Microlensing Binary Composed of Brown Dwarfs (2017)
  • Author(s): Han C.、et al.
  • Journal Title: The Astrophysical Journal Volume: 843 Issue: 1 Pages: 59-59
  • DOI: 10.3847/1538-4357/aa740e
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A companion on the planet/brown dwarf mass boundary on a wide orbit discovered by gravitational microlensing (2017)
  • Author(s): Poleski R.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 604 Pages: A103-A103
  • DOI: 10.1051/0004-6361/201730928
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MOA Data Reveal a New Mass, Distance, and Relative Proper Motion for Planetary System OGLE-2015-BLG-0954L (2017)
  • Author(s): Bennett D. P.、et al.
  • Journal Title: The Astronomical Journal Volume: 154 Issue: 2 Pages: 68-68
  • DOI: 10.3847/1538-3881/aa7aee
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ground-based Parallax Confirmed by Spitzer: Binary Microlensing Event MOA-2015-BLG-020 (2017)
  • Author(s): Wang Tianshu、et al.
  • Journal Title: The Astrophysical Journal Volume: 845 Issue: 2 Pages: 129-129
  • DOI: 10.3847/1538-4357/aa813b
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The lowest mass ratio planetary microlens: OGLE 2016?BLG?1195Lb (2017)
  • Author(s): Bond I. A.、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 469 Issue: 2 Pages: 2434-2440
  • DOI: 10.1093/mnras/stx1049
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars (2017)
  • Author(s): Bensby T.、et al.
  • Journal Title: Astronomy & Astrophysics Volume: 605 Pages: A89-A89
  • DOI: 10.1051/0004-6361/201730560
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The first eclipsing binary catalogue from the MOA-II data base (2017)
  • Author(s): Li M. C. A.、et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 470 Issue: 1 Pages: 539-550
  • DOI: 10.1093/mnras/stx1280
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2016-BLG-0263Lb: Microlensing Detection of a Very Low-mass Binary Companion through a Repeating Event Channel (2017)
  • Author(s): Han C.、et al.
  • Journal Title: The Astronomical Journal Volume: 154 Issue: 4 Pages: 133-133
  • DOI: 10.3847/1538-3881/aa859a
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multi-messenger Observations of a Binary Neutron Star Merger (2017)
  • Author(s): Abbott B. P., Abbott, R., Abbott, T. D., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R. X., Adya, V. B., Affeldt, C., Afrough, M., Agarwal, B., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O. D., Aiello, L., Ain, A., Ajith, P. 他 Negoro, H. 含む 3656 名
  • Journal Title: The Astrophysical Journal Letters Volume: 848 Issue: 2 Pages: 1-59
  • DOI: 10.3847/2041-8213/aa91c9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2013-BLG-0132Lb and OGLE-2013-BLG-1721Lb: Two Saturn-mass Planets Discovered around M-dwarfs (2017)
  • Author(s): Mr?z Przemek、et al.
  • Journal Title: The Astronomical Journal Volume: 154 Issue: 5 Pages: 205-205
  • DOI: 10.3847/1538-3881/aa8f98
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Pluto occultation on 2015 June 29 UTC with central flash and atmospheric spikes just before the New Horizons flyby (2017)
  • Author(s): Pasachoff Jay M.、Babcock Bryce A.、Durst Rebecca F.、Seeger Christina H.、Levine Stephen E.、Bosh Amanda S.、Person Michael J.、Sickafoose Amanda A.、Zuluaga Carlos A.、Kosiarek Molly R.、Abe Fumio、Nagakane Masayuki、Suzuki Daisuke、Tristram Paul J.、Arredondo Anicia
  • Journal Title: Icarus Volume: 296 Pages: 305-314
  • DOI: 10.1016/j.icarus.2017.05.012
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] J-GEM observations of an electromagnetic counterpart to the neutron star merger GW170817 (2017)
  • Author(s): Utsumi Yousuke , Tanaka Masaomi , Tominaga Nozomu , Yoshida Michitoshi , Barway Sudhanshu , Nagayama Takahiro , Zenko Tetsuya , Aoki Kentaro , Fujiyoshi Takuya , Furusawa Hisanori , et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 69 Issue: 6 Pages: 101-101
  • DOI: 10.1093/pasj/psx118
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Kilonova from post-merger ejecta as an optical and near-Infrared counterpart of GW170817 (2017)
  • Author(s): Tanaka Masaomi , Utsumi Yousuke , Mazzali Paolo A. , Tominaga Nozomu , Yoshida Michitoshi , Sekiguchi Yuichiro , Morokuma Tomoki , Motohara Kentaro , Ohta Kouji , Kawabata Koji S. , et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 69 Issue: 6 Pages: 102-102
  • DOI: 10.1093/pasj/psx121
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2016-BLG-1190Lb: The First Spitzer Bulge Planet Lies Near the Planet/Brown-dwarf Boundary (2017)
  • Author(s): Ryu Y.-H.、et al.
  • Journal Title: The Astronomical Journal Volume: 155 Issue: 1 Pages: 40-40
  • DOI: 10.3847/1538-3881/aa9be4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2012-BLG-0950Lb: The First Planet Mass Measurement from Only Microlens Parallax and Lens Flux (2017)
  • Author(s): Koshimoto, N.他
  • Journal Title: The Astronomical Journal Volume: 153 Issue: 1 Pages: 1-1
  • DOI: 10.3847/1538-3881/153/1/1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] J-GEM follow-up observations of the gravitational wave source GW151226* (2017)
  • Author(s): Yoshida, Michitoshi他
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 69 Issue: 1 Pages: 9-9
  • DOI: 10.1093/pasj/psw113
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Binary Source Microlensing Event OGLE-2016-BLG-0733: Interpretation of a Long-term Asymmetric Perturbation (2017)
  • Author(s): Jung, Y. K.他
  • Journal Title: The Astronomical Journal Volume: 153 Issue: 3 Pages: 129-129
  • DOI: 10.3847/1538-3881/aa5d07
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The frequency of snowline-region planets from four years of OGLE-MOA-Wise second-generation microlensing (2016)
  • Author(s): Shvartzvald, Y.他
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 457 Issue: 4 Pages: 4089-4113
  • DOI: 10.1093/mnras/stw191
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Revisiting the Microlensing Event OGLE 2012-BLG-0026: A Solar Mass Star with Two Cold Giant Planets (2016)
  • Author(s): Bealieu. J.-P.他
  • Journal Title: The Astrophysical Journal Volume: 824 Issue: 2 Pages: 83-83
  • DOI: 10.3847/0004-637x/824/2/83
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] OGLE-2012-BLG-0724Lb: A Saturn-mass Planet around an M Dwarf (2016)
  • Author(s): Hirao, Y.他
  • Journal Title: The Astrophysical Journal Volume: 824 Issue: 2 Pages: 139-139
  • DOI: 10.3847/0004-637x/824/2/139
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The First Neptune Analog or Super-Earth with a Neptune-like Orbit: MOA-2013-BLG-605Lb (2016)
  • Author(s): Sumi, T.他
  • Journal Title: The Astrophysical Journal Volume: 825 Issue: 2 Pages: 112-112
  • DOI: 10.3847/0004-637x/825/2/112
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Localization and Broadband Follow-up of the Gravitational-wave Transient GW150914 (2016)
  • Author(s): B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. and 1564 coauthors
  • Journal Title: Astrophysical Journal Letters Volume: 826 Issue: 1 Pages: L13-L13
  • DOI: 10.3847/2041-8205/826/1/l13
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Supplement: Localization and Broadband Follow-up of the Gravitational-wave Transient GW150914 (2016)
  • Author(s): Abbott B.P., Abbott R., Abbott T.D., Abernathy M.R., Acernese F., Ackley K., Adams C., Adams T., Addesso P., Adhikari R.X. and 1567 coauthors
  • Journal Title: Astrophysical Journal Supplement Series Volume: 225 Issue: 1 Pages: 8-8
  • DOI: 10.3847/0067-0049/225/1/8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] J-GEM follow-up observations to search for an optical counterpart of the first gravitational wave source GW150914 (2016)
  • Author(s): T Morokuma, M Tanaka, Y Asakura, F Abe, PJ. Tristram, Y Utsumi, M Doi, K Fujisawa, R Itoh, Y Itoh, K S. Kawabata, N Kawai, D Kuroda, K Matsubayashi, Yoshihiko Saito, Yoichi Yatsu, et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 68 Issue: 4
  • DOI: 10.1093/pasj/psw061
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The First Circumbinary Planet Found by Microlensing: OGLE-2007-BLG-349L(AB)c (2016)
  • Author(s): Bennett, D. P.他
  • Journal Title: The Astronomical Journal Volume: 152 Issue: 5 Pages: 125-125
  • DOI: 10.3847/0004-6256/152/5/125
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Discovery of a Gas Giant Planet in Microlensing Event OGLE-2014-BLG-1760 (2016)
  • Author(s): Bhattacharya, A.他
  • Journal Title: The Astronomical Journal Volume: 152 Issue: 5 Pages: 140-140
  • DOI: 10.3847/0004-6256/152/5/140
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The First Simultaneous Microlensing Observations by Two Space Telescopes: Spitzer and Swift Reveal a Brown Dwarf in Event OGLE-2015-BLG-1319 (2016)
  • Author(s): Shvartzvald, Y.他
  • Journal Title: The Astrophysical Journal Volume: 831 Issue: 2 Pages: 183-183
  • DOI: 10.3847/0004-637x/831/2/183
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Exoplanet Mass-ratio Function from the MOA-II Survey: Discovery of a Break and Likely Peak at a Neptune Mass (2016)
  • Author(s): Suzuki, D.他
  • Journal Title: The Astrophysical Journal Volume: 833 Issue: 2 Pages: 145-145
  • DOI: 10.3847/1538-4357/833/2/145
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Campaign 9 of the K2 Mission: Observational Parameters, Scientific Drivers, and Community Involvement for a Simultaneous Space- and Ground-based Microlensing Survey (2016)
  • Author(s): Henderson, Calen B.他
  • Journal Title: Publications of the Astronomical Society of Pacific Volume: 128 Issue: 970 Pages: 124401-124401
  • DOI: 10.1088/1538-3873/128/970/124401
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] MOA-II 望遠鏡を用いた低質量原始ブラックホールの探査 (2019)
  • Author(s): 藤井大翔, MOA コラボレーション
  • Organizer: 日本天文学会
• [Presentation] 深層学習を用いた MOA-II マイクロレンズサーベイ画像におけるリアルタイ ムイベント検出の高効率化 (2019)
  • Author(s): 末松春乃 , MOA コラボレーション
  • Organizer: 日本天文学会
• [Presentation] 重力マイクロレンズイベントに対する惑星(2L1S)モデルと公転軌道の効果を 含めた連星ソース (1L2S) モデルの検証 (2019)
  • Author(s): 宮崎翔太, MOA コラ ボレーション
  • Organizer: 日本天文学会
• [Presentation] 低質量比の惑星候補イベントOGLE-2018-BLG-1185/MOA-2018-BLG-228の解 析 (2019)
  • Author(s): 近藤依央菜 , MOA コラボレーション
  • Organizer: 日本天文学会
• [Presentation] 重力マイクロレンズ法による巨大ガス惑星周りの衛星存在確率に対する制限 (2019)
  • Author(s): 山川竹玄 (名古屋大学), MOA コラボレーション
  • Organizer: 日本天文学会
• [Presentation] Massive black hole search by MOA (2019)
  • Author(s): 阿部文雄
  • Organizer: 23rd International Microlensing Conference
  • Int'l Joint Research
• [Presentation] MOA 望遠鏡を用いた大質量ブラックホールの探索 (2018)
  • Author(s): 宗像恒
  • Organizer: 日本天文学会2018年秋季年会
• [Presentation] Follow-up observations of GW events and search for black holes by MOA (2018)
  • Author(s): 阿部文雄
  • Organizer: The Second Annual Area Symposium of innovative area Gravitational wave physics and astronomy: nenesis
  • Int'l Joint Research
• [Presentation] Follow up observations with B&C telescope (2018)
  • Author(s): 亀井悠平
  • Organizer: The Second Annual Area Symposium of innovative area Gravitational wave physics and astronomy: nenesis
  • Int'l Joint Research
• [Presentation] Gravitational wave followup by the MOA collaboration (2018)
  • Author(s): Fumio Abe
  • Organizer: Microlensing 22
  • Int'l Joint Research
• [Presentation] Update on the MOA project (2018)
  • Author(s): Ian Bond
  • Organizer: Microlensing 22
  • Int'l Joint Research
• [Presentation] Using the MOA database and the eclipse time variation 27 Jan method (2018)
  • Author(s): Man Cheung Alex Li
  • Organizer: Microlensing 22
  • Int'l Joint Research
• [Presentation] Planet formation theory (2018)
  • Author(s): Daisuke Suzuki
  • Organizer: Microlensing 22
  • Int'l Joint Research
• [Presentation] MOA-2015-BLG-404 : 低質量星周りの巨大ガス惑星 (2018)
  • Author(s): 永金昌幸
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] 巨大ガス惑星に付随するスーパーネプチューンの衛星系、または褐色矮星連 星: MOA-2015-BLG-337 (2018)
  • Author(s): 宮崎翔太
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] 重力マイクロレンズ観測結果と惑星形成モデルとの比較 (2018)
  • Author(s): 鈴木大介
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] 低増光率マイクロレンズイベントにおける複数惑星系の初検出：OGLE-2014- BLG-1722 (2018)
  • Author(s): 鈴木大介
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] MOA グループによる重力波天体 GW170817/AT2017gfo の観測 (2018)
  • Author(s): 阿部文雄
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] LIGO O2におけるMOA望遠鏡を用いた重力波天体の探索 (2017)
  • Author(s): 朝倉悠一郎, MOA共同研究, J-GEM共同研究
  • Organizer: 日本天文学会２０１７年春季年会
  • Place of Presentation: 九州大学
  • Year and Date: 2017-03-15
• [Presentation] 重力マイクロレンズ天体の星像内のコンタミの確率のベイズ推定法の確立 (2017)
  • Author(s): 越本直季
  • Organizer: 日本天文学会2017年秋季年会
• [Presentation] Follow-up observations by MOA in LIGO O1 and prospect for O2 (2016)
  • Author(s): Abe, Fumio, MOA Collaboration
  • Organizer: Symposium on "New development in astrophysics through multimessenger observations of gravitational wave sources"
  • Place of Presentation: YITP, Kyoto University
  • Year and Date: 2016-12-26
  • Int'l Joint Research
• [Presentation] EM follow-up observation with MOA telescope (2016)
  • Author(s): Yuichiro, Asakura, MOA Collaboration
  • Organizer: Symposium on "New development in astrophysics through multimessenger observations of gravitational wave sources"
  • Place of Presentation: YITP, Kyoto University
  • Year and Date: 2016-12-26
  • Int'l Joint Research
• [Presentation] MOA望遠鏡を使った重力波フォローアップシステムの開発及び運用 (2016)
  • Author(s): 朝倉悠一郎, MOA共同研究, J-GEM共同研究
  • Organizer: 日本天文学会２０１６年秋季年会
  • Place of Presentation: 愛媛大学
  • Year and Date: 2016-09-14
• [Book] 天文月報第１１０号第３巻２２７ページ「重力レンズとアマチュア」 (2017)
  • Author(s): 阿部 文雄
  • Total Pages: 7
  • Publisher: 日本天文学会
• [Remarks] MOA project homepage
  • URL: http://www.phys.canterbury.ac.nz/moa/
• [Remarks] Microlansing Observations in Astrophysics
  • URL: http://www.phys.canterbury.ac.nz/moa/
• [Remarks] Microlensing Observations in Astrophysics
  • URL: http://www.phys.canterbury.ac.nz/moa/
• [Remarks] MOA, Microlensing Observations in Astrophysics
  • URL: http://www.phys.canterbury.ac.nz/moa/