Related papers: OGLE 2003-BLG-235/MOA 2003-BLG-53: A planetary mic…

A sub-Saturn Mass Planet, MOA-2009-BLG-319Lb

We report the gravitational microlensing discovery of a sub-Saturn mass planet, MOA-2009-BLG-319Lb, orbiting a K or M-dwarf star in the inner Galactic disk or Galactic bulge. The high cadence observations of the MOA-II survey discovered…

Earth and Planetary Astrophysics · Physics 2015-05-20 N. Miyake , T. Sumi , Subo Dong , R. Street , L. Mancini , A. Gould , D. P. Bennett , Y. Tsapras , J. C. Yee , M. D. Albrow , I. A. Bond , P. Fouque , P. Browne , C. Han , C. Snodgrass , F. Finet , K. Furusawa , K. Harpsoe , W. Allen , M. Hundertmark , M. Freeman , D. Suzuki , F. Abe , C. S. Botzler , D. Douchin , A. Fukui , F. Hayashi , J. B. Hearnshaw , S. Hosaka , Y. Itow , K. Kamiya , P. M. Kilmartin , A. Korpela , W. Lin , C. H. Ling , S. Makita , K. Masuda , Y. Matsubara , Y. Muraki , T. Nagayama , K. Nishimoto , K. Ohnishi , Y. C. Perrott , N. Rattenbury , To. Saito , L. Skuljan , D. J. Sullivan , W. L. Sweatman , P. J. Tristram , K. Wada , P. C. M. Yock , The MOA Collaboration , G. Bolt , M. Bos , G. W. Christie , D. L. DePoy , J. Drummond , A. Gal-Yam , B. S. Gaudi , E. Gorbikov , D. Higgins , K. -H. Hwang J. Janczak , S. Kaspi , C. -U. Lee , J. -R. Koo , S. Koz lowski , Y. Lee , F. Mallia , A. Maury , D. Maoz , J. McCormick , L. A. G. Monard , D. Moorhouse , J. A. Mu~noz , T. Natusch , E. O. Ofek , R. W. Pogge , D. Polishook , R. Santallo , A. Shporer , O. Spector , G. Thornley , The Micro FUN Collaboration , A. Allan , D. M. Bramich , K. Horne , N. Kains , I. Steele , The RoboNet Collaboration , V. Bozza , M. J. Burgdorf , S. Calchi Novati , M. Dominik , S. Dreizler , M. Glitrup , F. V. Hessman , T. C. Hinse , U. G. Jorgensen , C. Liebig , G. Maier , M. Mathiasen , S. Rahvar , D. Ricci , G. Scarpetta , J. Skottfelt , J. Southworth , J. Surdej , J. Wambsganss , F. Zimmer , The MiNDSTEp Consortium , V. Batista , J. P. Beaulieu , S. Brillant , A. Cassan , A. Cole , E. Corrales , Ch. Coutures , S. Dieters , J. Greenhill , D. Kubas , J. Menzies , The PLANET Collaboration

Three binary-source binary-lens microlensing events from the 2024 microlensing campaign

We investigated microlensing events detected by the OGLE and KMTNet surveys during the 2024 observing season, focusing on those that exhibit very complex anomaly features. Through this analysis, we found that the light curves of three…

Solar and Stellar Astrophysics · Physics 2025-09-16 Cheongho Han , Chung-Uk Lee , Andrzej Udalski , Michael D. Albrow , Sun-Ju Chung , Andrew Gould , Youn Kil Jung , Kyu-Ha Hwang , Yoon-Hyun Ryu , Yossi Shvartzvald , In-Gu Shin , Jennifer C. Yee , Weicheng Zang , Hongjing Yang , Doeon Kim , Dong-Jin Kim , Byeong-Gon Park , Przemek Mróz , Michał K. Szymański , Jan Skowron , Radosław Poleski , Igor Soszyński , Paweł Pietrukowicz , Szymon Kozłowski , Krzysztof A. Rybicki , Patryk Iwanek , Krzysztof Ulaczyk , Marcin Wrona , Mariusz Gromadzki , Mateusz J. Mróz

OGLE-2012-BLG-0455/MOA-2012-BLG-206: Microlensing event with ambiguity in planetary interpretations caused by incomplete coverage of planetary signal

Characterizing a microlensing planet is done from modeling an observed lensing light curve. In this process, it is often confronted that solutions of different lensing parameters result in similar light curves, causing difficulties in…

Earth and Planetary Astrophysics · Physics 2015-06-19 H. Park , C. Han , A. Gould , A. Udalski , T. Sumi , P. Fouqué , J. -Y. Choi , G. Christie , D. L. Depoy , Subo Dong , B. S. Gaudi , K. -H. Hwang , Y. K. Jung , A. Kavka , C. -U. Lee , L. A. G. Monard , T. Natusch , H. Ngan , R. W. Pogge , I. -G. Shin , J. C. Yee , M. K. Szymański , M. Kubiak , I. Soszyński , G. Pietrzyński , R. Poleski , K. Ulaczyk , P. Pietrukowicz , S. Kozłowski , J. Skowron , Ł. Wyrzykowski , F. Abe , D. P. Bennett , I. A. Bond , C. S. Botzler , P. Chote , M. Freeman , A. Fukui , D. Fukunaga , P. Harris , Y. Itow , N. Koshimoto , C. H. Ling , K. Masuda , Y. Matsubara , Y. Muraki , S. Namba , K. Ohnishi , N. J. Rattenbury , To. Saito , D. J. Sullivan , W. L. Sweatman , D. Suzuki , P. J. Tristram , K. Wada , N. Yamai , P. C. M. Yock , A. Yonehara

KMT-2024-BLG-0404L: A triple microlensing system consisting of a star, a brown dwarf, and a planet

We have investigated the lensing event KMT-2024-BLG-0404. The light curve of the event exhibited a complex structure with multiple distinct features, including two prominent caustic spikes, two cusp bumps, and a brief discontinuous feature…

Earth and Planetary Astrophysics · Physics 2025-07-11 Cheongho Han , Andrzej Udalski , Chung-Uk Lee , Yoon-Hyun Ryu , Michael D. Albrow , Sun-Ju Chung , Andrew Gould , Kyu-Ha Hwang , Youn Kil Jung , In-Gu Shin , Yossi Shvartzvald , Jennifer C. Yee , Hongjing Yang , Weicheng Zang , Doeon Kim , Dong-Jin Kim , Byeong-Gon Park , Richard W. Pogge , Przemek Mróz , Michał K. Szymański , Jan Skowron , Radosław Poleski , Igor Soszyński , Paweł Pietrukowicz , Szymon Kozłowski , Krzysztof A. Rybicki , Patryk Iwanek , Krzysztof Ulaczyk , Marcin Wrona , Mariusz Gromadzki , Mateusz J. Mróz , Michał Jaroszyński

Microlensing Binaries Discovered through High-Magnification Channel

Microlensing can provide a useful tool to probe binary distributions down to low-mass limits of binary companions. In this paper, we analyze the light curves of 8 binary lensing events detected through the channel of high-magnification…

Solar and Stellar Astrophysics · Physics 2015-05-30 I. -G. Shin , J. -Y. Choi , S. -Y. Park , C. Han , A. Gould , T. Sumi , A. Udalski , J. -P. Beaulieu , M. Dominik , W. Allen , M. Bos , G. W. Christie , D. L. Depoy , S. Dong , J. Drummond , A. Gal-Yam , B. S. Gaudi , L. -W. Hung , J. Janczak , S. Kaspi , C. -U. Lee , F. Mallia , D. Maoz , A. Maury , J. McCormick , L. A. G. Monard , D. Moorhouse , J. A. Muñoz , T. Natusch , C. Nelson , B. -G. Park , R. W. Pogge , D. Polishook , Y. Shvartzvald , A. Shporer , G. Thornley , J. C. Yee , F. Abe , D. P. Bennett , I. A. Bond , C. S. Botzler , A. Fukui , K. Furusawa , F. Hayashi , J. B. Hearnshaw , S. Hosaka , Y. Itow , K. Kamiya , P. M. Kilmartin , S. Kobara , A. Korpela , W. Lin , C. H. Ling , S. Makita , K. Masuda , Y. Matsubara , N. Miyake , Y. Muraki , M. Nagaya , K. Nishimoto , K. Ohnishi , T. Okumura , K. Omori , Y. C. Perrott , N. Rattenbury , To. Saito , L. Skuljan , D. J. Sullivan , D. Suzuki , W. L. Sweatman , P. J. Tristram , K. Wada , P. C. M. Yock , M. K. Szymański , M. Kubiak , G. Pietrzyński , I. Soszyński , R. Poleski , K. Ulaczyk , Ł. Wyrzykowski , S. Kozłowski , P. Pietrukowicz , M. D. Albrow , V. Batista , D. M. Bramich , S. Brillant , J. A. R. Caldwell , J. J. Calitz , A. Cassan , A. Cole , K. H. Cook , E. Corrales , Ch. Coutures , S. Dieters , D. Dominis Prester , J. Donatowicz , P. Fouqué , J. Greenhill , M. Hoffman , U. G. Jørgensen , S. R. Kane , D. Kubas , J. -B. Marquette , R. Martin , P. Meintjes , J. Menzies , K. R. Pollard , K. C. Sahu , J. Wambsganss , A. Williams , C. Vinter , M. Zub , A. Allan , P. Browne , K. Horne , C. Snodgrass , I. Steele , R. Street , Y. Tsapras , K. A. Alsubai , V. Bozza , P. Browne , M. J. Burgdorf , S. Calchi Novati , P. Dodds , S. Dreizler , F. Finet , T. Gerner , M. Glitrup , F. Grundahl , S. Hardis , K. Harpsøe , F. V. Hessman , T. C. Hinse , M. Hundertmark , N. Kains , E. Kerins , C. Liebig , G. Maier , L. Mancini , M. Mathiasen , M. T. Penny , S. Proft , S. Rahvar , D. Ricci , G. Scarpetta , S. Schäfer , F. Schönebeck , J. Skottfelt , J. Surdej , J. Southworth , F. Zimmer

Microlensig Binaries with Candidate Brown Dwarf Companions

Brown dwarfs are important objects because they may provide a missing link between stars and planets, two populations that have dramatically different formation history. In this paper, we present the candidate binaries with brown dwarf…

Solar and Stellar Astrophysics · Physics 2015-06-11 I. -G. Shin , C. Han , A. Gould , A. Udalski , T. Sumi , M. Dominik , J. -P. Beaulieu , Y. Tsapras , V. Bozza , M. K. Szymański , M. Kubiak , I. Soszyński , G. Pietrzyński , R. Poleski , K. Ulaczyk , P. Pietrukowicz , S. Kozłowski , J. Skowron , Ł. Wyrzykowski , F. Abe , D. P. Bennett , I. A. Bond , C. S. Botzler , M. Freeman , A. Fukui , K. Furusawa , F. Hayashi , J. B. Hearnshaw , S. Hosaka , Y. Itow , K. Kamiya , P. M. Kilmartin , S. Kobara , A. Korpela , W. Lin , C. H. Ling , S. Makita , K. Masuda , Y. Matsubara , N. Miyake , Y. Muraki , M. Nagaya , K. Nishimoto , K. Ohnishi , T. Okumura , K. Omori , Y. C. Perrott , N. Rattenbury , To. Saito , L. Skuljan , D. J. Sullivan , D. Suzuki , W. L. Sweatman , P. J. Tristram , K. Wada , P. C. M. Yock , G. W. Christie , D. L. Depoy , S. Dong , A. Gal-Yam , B. S. Gaudi , L. -W. Hung , J. Janczak , S. Kaspi , D. Maoz , J. McCormick , D. McGregor , D. Moorhouse , J. A. Muñoz , T. Natusch , C. Nelson , R. W. Pogge , T. -G. Tan , D. Polishook , Y. Shvartzvald , A. Shporer , G. Thornley , U. Malamud , J. C. Yee , J. -Y. Choi , Y. -K. Jung , H. Park , C. -U. Lee , B. -G. Park , J. -R. Koo , D. Bajek , D. M. Bramich , P. Browne , K. Horne , S. Ipatov , C. Snodgrass , I. Steele , R. Street , K. A. Alsubai , M. J. Burgdorf , S. Calchi Novati , P. Dodds , S. Dreizler , X. -S. Fang , F. Grundahl , C. -H. Gu , S. Hardis , K. Harpsøe , T. C. Hinse , M. Hundertmark , J. Jessen-Hansen , U. G. Jørgensen , N. Kains , E. Kerins , C. Liebig , M. Lund , M. Lundkvist , L. Mancini , M. Mathiasen , A. Hornstrup , M. T. Penny , S. Proft , S. Rahvar , D. Ricci , G. Scarpetta , J. Skottfelt , J. Southworth , J. Surdej , J. Tregloan-Reed , O. Wertz , F. Zimmer , M. D. Albrow , V. Batista , S. Brillant , J. A. R. Caldwell , J. J. Calitz , A. Cassan , A. Cole , K. H. Cook , E. Corrales , Ch. Coutures , S. Dieters , D. Dominis Prester , J. Donatowicz , P. Fouqué , J. Greenhill , K. Hill , M. Hoffman , S. R. Kane , D. Kubas , J. -B. Marquette , R. Martin , P. Meintjes , J. Menzies , K. R. Pollard , K. C. Sahu , J. Wambsganss , A. Williams , C. Vinter , M. Zub

OGLE-2012-BLG-0563Lb: a Saturn-mass Planet around an M Dwarf with the Mass Constrained by Subaru AO imaging

We report the discovery of a microlensing exoplanet OGLE-2012-BLG-0563Lb with the planet-star mass ratio ~1 x 10^{-3}. Intensive photometric observations of a high-magnification microlensing event allow us to detect a clear signal of the…

Earth and Planetary Astrophysics · Physics 2016-01-27 A. Fukui , A. Gould , T. Sumi , D. P. Bennett , I. A. Bond , C. Han , D. Suzuki , J. -P. Beaulieu , V. Batista , A. Udalski , R. A. Street , Y. Tsapras , M. Hundertmark , F. Abe , A. Bhattacharya , M. Freeman , Y. Itow , C. H. Ling , N. Koshimoto , K. Masuda , Y. Matsubara , Y. Muraki , K. Ohnishi , L. C. Philpott , N. Rattenbury , T. Saito , D. J. Sullivan , P. J. Tristram , A. Yonehara , J. -Y. Choi , G. W. Christie , D. L. DePoy , Subo Dong , J. Drummond , B. S. Gaudi , K. -H. Hwang , A. Kavka , C. U. Lee , J. McCormick , T. Natusch , H. Ngan , H. Park , R. W. Pogge , I-G. Shin , T. -G. Tan , J. C. Yee , M. K. Szymański , G. Pietrzyński , I. Soszyński , R. Poleski , S. Kozłowski , P. Pietrukowicz , K. Ulaczyk , Ł. Wyrzykowski D. M. Bramich , P. Browne , M. Dominik , K. Horne , S. Ipatov , N. Kains , C. Snodgrass , I. A. Steele

Ground-based parallax confirmed by Spitzer: binary microlensing event MOA-2015-BLG-020

We present the analysis of the binary gravitational microlensing event MOA-2015-BLG-020. The event has a fairly long timescale (about 63 days) and thus the light curve deviates significantly from the lensing model that is based on the…

Solar and Stellar Astrophysics · Physics 2017-08-30 Tianshu Wang , Wei Zhu , Shude Mao , I. A. Bond , A. Gould , A. Udalski , T. Sumi , V. Bozza , C. Ranc , A. Cassan , J. C. Yee , C. Han , F. Abe , Y. Asakura , R. Barry , D. P. Bennett , A. Bhattacharya , M. Donachie , P. Evans , A. Fukui , Y. Hirao , Y. Itow , K. Kawasaki , N. Koshimoto , M. C. A. Li , C. H. Ling , K. Masuda , Y. Matsubara , S. Miyazaki , Y. Muraki , M. Nagakane , K. Ohnishi , N. Rattenbury , To. Saito , A. Sharan , H. Shibai , D. J. Sullivan , D. Suzuki , P. J. Tristram , T. Yamada , A. Yonehara , M. Pawlak , P. Pietrukowicz , R. Poleski , J. Skowron , I. Soszynski , S. KozLowski , P. Mroz , K. Ulaczyk , M. K. Szymanski , C. Beichman , G. Bryden , S. Calchi Novati , S. Carey , M. Fausnaugh , B. S. Gaudi , C. B. Henderson , Y. Shvartzvald , B. Wibking , M. D. Albrow , S. -J. Chung , K. -H. Hwang , Y. K. Jung , Y. -H. Ryu , I. -G. Shin , S. -M. Cha , D. -J. Kim , H. -W. Kim , S. -L. Kim , C. -U. Lee , Y. Yee , B. -G. Park , R. W. Pogge , R. A. Street , Y. Tsapras , M. Hundertmark , E. Bachelet , M. Dominik , K. Horne , R. Figuera Jaimes , J. Wambsganss , D. M. Bramich , R. Schmidt , C. Snodgrass , I. A. Steele , J. Menzies

Reconciling the predictions of microlensing analysis with radial velocity measurements for OGLE-2011-BLG-0417

Microlensing is able to reveal multiple body systems located several kilo-parsec away from the Earth. Since it does not require the measurement of light from the lens, microlensing is sensitive to a range of objects from free-floating…

Earth and Planetary Astrophysics · Physics 2018-10-17 E. Bachelet , J. -P. Beaulieu , I. Boisse , A. Santerne , R. A. Street

Planetary Detection Efficiency of the Magnification 3000 Microlensing Event OGLE-2004-BLG-343

OGLE-2004-BLG-343 was a microlensing event with peak magnification A_{max}=3000+/-1100, by far the highest-magnification event ever analyzed and hence potentially extremely sensitive to planets orbiting the lens star. Due to human error,…

Astrophysics · Physics 2009-11-13 Subo Dong , D. L. DePoy , B. S. Gaudi , A. Gould , C. Han , B. -G. Park , R. W. Pogge , A. Udalski , O. Szewczyk , M. Kubiak , M. K. Szymanski , G. Pietrzynski , I. Soszynski , L. Wyrzykowski , K. Zebrun

OGLE-2019-BLG-0960Lb: The Smallest Microlensing Planet

We report the analysis of OGLE-2019-BLG-0960, which contains the smallest mass-ratio microlensing planet found to date (q = 1.2--1.6 x 10^{-5} at 1-sigma). Although there is substantial uncertainty in the satellite parallax measured by…

Earth and Planetary Astrophysics · Physics 2021-10-13 Jennifer C. Yee , Weicheng Zang , Andrzej Udalski , Yoon-Hyun Ryu , Jonathan Green , Steve Hennerley , Andrew Marmont , Takahiro Sumi , Shude Mao , Mariusz Gromadzki , Przemek Mróz , Jan Skowron , Radoslaw Poleski , Michał K. Szymański , Igor Soszyński , Paweł Pietrukowicz , Szymon Kozłowski , Krzysztof Ulaczyk , Krzysztof A. Rybicki , Patryk Iwanek , Marcin Wrona , Michael D. Albrow , Sun-Ju Chung , Andrew Gould , Cheongho Han , Kyu-Ha Hwang , Youn Kil Jung , Hyoun-Woo Kim , In-Gu Shin , Yossi Shvartzvald , Sang-Mok Cha , Dong-Jin Kim , Seung-Lee Kim , Chung-Uk Lee , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Etienne Bachelet , Grant Christie , Markus P. G. Hundertmark , Dan Maoz , Jennie McCormick , Tim Natusch , Matthew T. Penny , Rachel A. Street , Yiannis Tsapras , Charles A. Beichman , Geoffery Bryden , Sebastiano Calchi Novati , Sean Carey , B. Scott Gaudi , Calen B. Henderson , Samson Johnson , Wei Zhu , Ian A. Bond , Fumio Abe , Richard Barry , David P. Bennett , Aparna Bhattacharya , Martin Donachie , Hirosane Fujii , Akihiko Fukui , Yuki Hirao , Stela Ishitani Silva , Yoshitaka Itow , Rintaro Kirikawa , Iona Kondo , Naoki Koshimoto , Man Cheung Alex Li , Yutaka Matsubara , Yasushi Muraki , Shota Miyazaki , Greg Olmschenk , Clément Ranc , Nicholas J. Rattenbury , Yuki Satoh , Hikaru Shoji , Daisuke Suzuki , Yuzuru Tanaka , Paul J. Tristram , Tsubasa Yamawaki , Atsunori Yonehara

OGLE-2014-BLG-0257L: A Microlensing Brown Dwarf Orbiting a Low-mass M Dwarf

In this paper, we report the discovery of a binary composed of a brown dwarf and a low-mass M dwarf from the observation of the microlensing event OGLE-2014-BLG-0257. Resolution of the very short-lasting caustic crossing combined with the…

Solar and Stellar Astrophysics · Physics 2016-05-25 C. Han , Y. K. Jung , A. Udalski , A. Gould , V. Bozza , M. K. Szymański , I. Soszyński , R. Poleski , S. Kozłowski , P. Pietrukowicz , J. Skowron , K. Ulaczyk , Ł. Wyrzykowski

Mass Measurements of Isolated Objects from Space-based Microlensing

We report on the mass and distance measurements of two single-lens events from the 2015 \emph{Spitzer} microlensing campaign. With both finite-source effect and microlens parallax measurements, we find that the lens of OGLE-2015-BLG-1268 is…

Solar and Stellar Astrophysics · Physics 2016-07-06 Wei Zhu , S. Calchi Novati , A. Gould , A. Udalski , C. Han , Y. Shvartzvald , C. Ranc , U. G. Jorgensen , R. Poleski , V. Bozza , C. Beichman , G. Bryden , S. Carey , B. S. Gaudi , C. B. Henderson , R. W. Pogge , I. Porritt , B. Wibking , J. C. Yee , M. Pawlak , M. K. Szymanski , J. Skowron , P. Mroz , S. Kozlowski , L. Wyrzykowski , P. Pietrukowicz , G. Pietrzynski , I. Soszynski , K. Ulaczyk , J. Y. Choi , H. Park , Y. K. Jung , I. -G. Shin , M. D. Albrow , B. -G. Park , S. -L. Kim , C. -U. Lee , D. -J. Kim , Y. Lee , M. Friedmann , S. Kaspi , D. Maoz , M. Hundertmark , R. A. Street , Y. Tsapras , D. M. Bramich , A. Cassan , M. Dominik , E. Bachelet , Subo Dong , R. Figuera Jaimes , K. Horne , S. Mao , J. Menzies , R. Schmidt , C. Snodgrass , I. A. Steele , J. Wambsganss , J. Skottfelt , M. I. Andersen , M. J. Burgdorf , S. Ciceri , G. D'Ago , D. F. Evans , S. -H. Gu , T. C. Hinse , E. Kerins , H. Korhonen , M. Kuffmeier , L. Mancini , N. Peixinho , A. popovas , M. Rabus , S. Rahvar , R. T. Rasmussen , G. Scarpetta , J. Southworth , J. Surdej , C. von Essen , Y. -B. Wang , O. Wertz

Spectroscopic characterisation of microlensing events Towards a new interpretation of OGLE-2011-BLG-0417

The microlensing event OGLE-2011-BLG-0417 is an exceptionally bright lens binary that was predicted to present radial velocity variation at the level of several km/s. Pioneer radial velocity follow-up observations with the UVES spectrograph…

Earth and Planetary Astrophysics · Physics 2016-11-23 A. Santerne , J. -P. Beaulieu , B. Rojas Ayala , I. Boisse , E. Schlawin , J. -M. Almenara , V. Batista , D. Bennett , R. F. Díaz , P. Figueira , D. J. James , T. Herter , J. Lillo-Box , J. B. Marquette , C. Ranc , N. C. Santos , S. G. Sousa

OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star

Microlensing is the only known direct method to measure the masses of stars that lack visible companions. In terms of microlensing observables, the mass is given by M=(c^2/4G)\tilde r_E \theta_E and so requires the measurement of both the…

Astrophysics · Physics 2009-11-10 Guangfei Jiang , D. L. DePoy , A. Gal-Yam , B. S. Gaudi , A. Gould , C. Han , Y. Lipkin , D. Maoz , E. O. Ofek , B. -G. Park , R. W. Pogge , A. Udalski , M. Kubiak , M. K. Szymanski , O. Szewczyk , K. Zebrun , L. Wyrzykowski , I. Soszynski , G. Pietrzynski , M. D. Albrow , J. -P. Beaulieu , J. A. R. Caldwell , A. Cassan , C. Coutures , M. Dominik , J. Donatowicz , P. Fouque , J. Greenhill , K. Hill , K. Horne , S. F. Jorgensen , U. G. Jorgensen , S. Kane , D. Kubas , R. Martin , J. Menzies , K. R. Pollard , K. C. Sahu , J. Wambsganss , R. Watson , A. Williams

OGLE-2014-BLG-1112LB: A Microlensing Brown Dwarf Detected Through the Channel of a Gravitational Binary-Lens Event

Due to the nature depending on only the gravitational field, microlensing, in principle, provides an important tool to detect faint and even dark brown dwarfs. However, the number of identified brown dwarfs is limited due to the difficulty…

Solar and Stellar Astrophysics · Physics 2017-07-19 C. Han , A. Udalski , V. Bozza , M. K. Szymań ski , I. Soszyński , J. Skowron , P. Mróz , R. Poleski , P. Pietrukowicz , S. Kozłowski , K. Ulaczyk , Ł. Wyrzykowski , S. Calchi Novati , G. D'Ago , M. Dominik , M. Hundertmark , U. G. Jorgensen , G. Scarpetta

Limits on additional planetary companions to OGLE-2005-BLG-390L

We investigate constraints on additional planets orbiting the distant M-dwarf star OGLE-2005-BLG-390L, around which photometric microlensing data has revealed the existence of the sub-Neptune-mass planet OGLE-2005-BLG-390Lb. We specifically…

Astrophysics · Physics 2009-11-13 D. Kubas , A. Cassan , M. Dominik , D. Bennett

OGLE-2016-BLG-1266: A Probable Brown-Dwarf/Planet Binary at the Deuterium Fusion Limit

We report the discovery, via the microlensing method, of a new very-low-mass binary system. By combining measurements from Earth and from the Spitzer telescope in Earth-trailing orbit, we are able to measure the microlensing parallax of the…

Solar and Stellar Astrophysics · Physics 2018-05-23 M. D. Albrow , J. C. Yee , A. Udalski , S. Calchi Novati , S. Carey , C. B. Henderson , C. Beichman , G. Bryden , B. S. Gaudi , Y. Shvartzvald , M. K. Szymanśki , P. Mroź , J. Skowron , R. Poleski , I. Soszynśki , S. Kozlowski , . Pietrukowicz , K. Ulaczyk , M. Pawlak , S. -J. Chung , A. Gould , C. Han , K. -H. Hwang , Y. K. Jung , Y. -H. Ryu , I. -G. Shin , W. Zhu , S. -M. Cha , D. -J. Kim , H. -W. Kim , S. -L. Kim , C. -U. Lee , D. -J. Lee , Y. Lee , B. -G. Park , R. W. Pogge

OGLE-2016-BLG-0693LB: Probing the Brown Dwarf Desert with Microlensing

We present an analysis of microlensing event OGLE-2016-BLG-0693, based on the survey-only microlensing observations by the OGLE and KMTNet groups. In order to analyze the light curve, we consider the effects of parallax, orbital motion, and…

Earth and Planetary Astrophysics · Physics 2017-12-06 Y. -H. Ryu , A. Udalski , J. C. Yee , M. D. Albrow , S. -J. Chung , A. Gould , C. Han , K. -H. Hwang , Y. K. Jung , I. -G. Shin , W. Zhu , S. -M. Cha , D. -J. Kim , H. -W. Kim , S. -L. Kim , C. -U. Lee , Y. Lee , B. -G. Park , R. W. Pogge , P. Pietrukowicz , S. Kozlowski , R. Poleski , J. Skowron , P. Mroz , M. K. Szymanski , I. Soszynski , M. Pawlak , K. Ulaczyk

Spectroscopic Mass and Host-star Metallicity Measurements for Newly Discovered Microlensing Planet OGLE-2018-BLG-0740Lb

We report the discovery of the microlensing planet OGLE-2018-BLG-0740Lb. The planet is detected with a very strong signal of $\Delta\chi^2\sim 4630$, but the interpretation of the signal suffers from two types of degeneracies. One type is…

Earth and Planetary Astrophysics · Physics 2019-08-14 Cheongho Han , Jennifer C. Yee , Andrzej Udalski , Ian A. Bond , Valerio Bozza , Arnaud Cassan , Yuki Hirao , Subo Dong , Juna A. Kollmeier , Nidia Morrell , Konstantina Boutsia , Michael D. Albrow , Sun-Ju Chung , Andrew Gould , Kyu-Ha Hwang , Chung-Uk Lee , Yoon-Hyun Ryu , In-Gu Shin , Yossi Shvartzvald , Youn Kil Jung , Doeon Kim , Woong-Tae Kim , Sang-Mok Cha , Dong-Jin Kim , Hyoun-Woo Kim , Kyeongsoo Hong , Seung-Lee Kim , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Weicheng Zang , Przemek Mróz , Michał K. Szymański , Jan Skowron , Radek Poleski , Igor Soszyński , Paweł Pietrukowicz , Szymon Kozłowski , Krzysztof Ulaczyk , Krzysztof A. Rybicki , Patryk Iwanek , Marcin Wrona , Fumio Abe , Richard Barry , David P. Bennett , Aparna Bhattacharya , Martin Donachie , Akihiko Fukui , Yoshitaka Itow , Kohei Kawasaki , Iona Kondo , Naoki Koshimoto , Man Cheung Alex Li , Yutaka Matsubara , Yasushi Muraki , Shota Miyazaki , Masayuki Nagakane , Clément Ranc , Nicholas J. Rattenbury , Haruno Suematsu , Denis J. Sullivan , Takahiro Sumi , Daisuke Suzuki , Paul J. Tristram , Atsunori Yonehara