Related papers: Binary Lenses in OGLE III EWS Database. Season 200…

OGLE-2016-BLG-0613LABb: A Microlensing Planet in a Binary System

We present the analysis of OGLE-2016-BLG-0613, for which the lensing light curve appears to be that of a typical binary-lens event with two caustic spikes but with a discontinuous feature on the trough between the spikes. We find that the…

Earth and Planetary Astrophysics · Physics 2017-11-29 C. Han , A. Udalski , A. Gould , C. -U. Lee , Y. Shvartzvald , W. C. Zang , S. Mao , S. Kozłowski , M. D. Albrow , S. -J. Chung , K. -H. Hwang , Y. K. Jung , D. Kim , H. -W. Kim , Y. -H. Ryu , I. -G. Shin , J. C. Yee , W. Zhu , S. -M. Cha , S. -L. Kim , D. -J. Kim , Y. Lee , B. -G. Park , J. Skowron , P. Mróz , P. Pietrukowicz , R. Poleski , M. K. Szymański , I. Soszyński , K. Ulaczyk , M. Pawlak C. Beichman , G. Bryden , S. Calchi Novati , B. S. Gaudi , C. B. Henderson , S. B. Howell , S. Jacklin , M. T. Penny , P. Fouqué , T. S. Wang

Microlensing limits on numbers and orbits of extra-solar planets from the 1998-2000 OGLE events

We analyze three years (1998-2000) of OGLE observations of microlensing events to place limits on the abundance of planets with a planet-to-star mass ratio $q=10^{-3}$ at distances $\sim 1-4$AU from their host stars, i.e. `cool Jupiters'.…

Astrophysics · Physics 2009-11-07 Yiannis Tsapras , Keith Horne , Stephen Kane , Richard Carson

The Optical Gravitational Lensing Experiment. Variable Baseline Microlensing Events in the Galactic Bulge

We present the first systematic search for microlensing events with variability in their baselines using data from the third phase of the Optical Gravitational Lensing Experiment (OGLE-III). A total of 137 candidates (88 new) was discovered…

Astrophysics · Physics 2007-05-23 L. Wyrzykowski , A. Udalski , S. Mao , M. Kubiak , M. K. Szymanski , G. Pietrzynski , I. Soszynski , O. Szewczyk

Systematic KMTNet Planetary Anomaly Search, Paper III: One Wide-Orbit Planet And Two Stellar Binaries

Only a few wide-orbit planets around old stars have been detected, which limits our statistical understanding of this planet population. Following the systematic search for planetary anomalies in microlensing events found by the Korea…

Earth and Planetary Astrophysics · Physics 2021-12-22 Hanyue Wang , Weicheng Zang , Wei Zhu , Kyu-Ha Hwang , Andrzej Udalski , Andrew Gould , Cheongho Han , Michael D. Albrow , Sun-Ju Chung , Youn Kil Jung , Doeon Kim , Yoon-Hyun Ryu , In-Gu Shin , Yossi Shvartzvald , Jennifer C. Yee , Sang-Mok Cha , Dong-Jin Kim , Hyoun-Woo Kim , Seung-Lee Kim , Chung-Uk Lee , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Radoslaw Poleski , Przemek Mróz , Jan Skowron , Michał K. Szymański , Igor Soszyński , Paweł Pietrukowicz , Szymon Kozłowski , Krzysztof Ulaczyk , Krzysztof A. Rybicki , Patryk Iwanek , Marcin Wrona , Mariusz Gromadzki , Hongjing Yang , Shude Mao , Xiangyu Zhang

Identifying microlensing events using neural networks

Current gravitational microlensing surveys are observing hundreds of millions of stars in the Galactic bulge - which makes finding rare microlensing events a challenging tasks. In almost all previous works, microlensing events have been…

Instrumentation and Methods for Astrophysics · Physics 2021-01-06 Przemek Mroz

OGLE-2017-BLG-0039: Microlensing Event with Light from the Lens Identified from Mass Measurement

We present the analysis of the caustic-crossing binary microlensing event OGLE-2017-BLG-0039. Thanks to the very long duration of the event, with an event time scale $t_{\rm E}\sim 130$ days, the microlens parallax is precisely measured…

Solar and Stellar Astrophysics · Physics 2018-11-28 C. Han , Y. K. Jung , A. Udalski , I. Bond , V. Bozza , M. D. Albrow , S. -J. Chung , A. Gould , K. -H. Hwang , D. Kim , C. -U. Lee , H. -W. Kim , Y. -H. Ryu , I. -G. Shin , J. C. Yee , Y. Shvartzvald , S. -M. Cha , S. -L. Kim , D. -J. Kim , D. -J. Lee , Y. Lee , B. -G. Park , R. W. Pogge , M. K. Szymański , P. Mróz , J. Skowron , R. Poleski , I. Soszyński , S. Kozłowski , P. Pietrukowicz , K. Ulaczyk , M. Pawlak , F. Abe , 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 , Y. Matsubara , S. Miyazaki , H. Munakata , Y. Muraki , M. Nagakane , K. Ohnishi , C. Ranc , N. Rattenbury , T. Saito , A. Sharan , D. J. Sullivan , T. Sumi , D. Suzuki , P. J. Tristram , T. Yamada , A. Yonehara

Brown-dwarf companions in microlensing binaries detected during the 2016--2018 seasons

With the aim of finding microlensing binaries containing brown-dwarf (BD) companions, we investigate the microlensing survey data collected during the 2016--2018 seasons. For this purpose, we first conducted modeling of lensing events with…

Solar and Stellar Astrophysics · Physics 2022-11-16 Cheongho Han , Yoon-Hyun Ryu , In-Gu Shin , Youn Kil Jung , Doeon Kim , Yuki Hirao , Valerio Bozza , Michael D. Albrow , Weicheng Zang , Andrzej Udalski , Ian A. Bond , Sun-Ju Chung , Andrew Gould , Kyu-Ha Hwang , Yossi Shvartzvald , Hongjing Yang , Sang-Mok Cha , Dong-Jin Kim , Hyoun-Woo Kim , Seung-Lee Kim , Chung-Uk Lee , Dong-Joo Lee , Jennifer C. Yee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , 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 , Hirosame Fujii , Akihiko Fukui , Stela Ishitani Silva , Rintaro Kirikawa , Iona Kondo , Naoki Koshimoto , Yutaka Matsubara , Sho Matsumoto , Shota Miyazaki , Yasushi Muraki , Arisa Okamura , Greg Olmschenk , Clément Ranc , Nicholas J. Rattenbury , Yuki Satoh , Takahiro Sumi , Daisuke Suzuki , Taiga Toda , Paul J. Tristram , Aikaterini Vandorou , Hibiki Yama , Yoshitaka Itow

An analysis of binary microlensing event OGLE-2015-BLG-0060

We present the analysis of stellar binary microlensing event OGLE-2015-BLG-0060 based on observations obtained from 13 different telescopes. Intensive coverage of the anomalous parts of the light curve was achieved by automated follow-up…

Earth and Planetary Astrophysics · Physics 2019-06-07 Y. Tsapras , A. Cassan , C. Ranc , E. Bachelet , R. Street , A. Udalski , M. Hundertmark , V. Bozza , J. P. Beaulieu , J. B. Marquette , E. Euteneuer , The RoboNet team , : , D. M. Bramich , M. Dominik , R. Figuera Jaimes , K. Horne , S. Mao , J. Menzies , R. Schmidt , C. Snodgrass , I. A. Steele , J. Wambsganss , The OGLE collaboration , : , P. Mróz , M. K. Szymański , I. Soszyński , J. Skowron , P. Pietrukowicz , S. Kozłowski , R. Poleski , K. Ulaczyk , M. Pawlak , The MiNDSTEp collaboration , : , U. G. Jørgensen , J. Skottfelt , A. Popovas , S. Ciceri , H. Korhonen , M. Kuffmeier , D. F. Evans , N. Peixinho , T. C. Hinse , M. J. Burgdorf , J. Southworth , R. Tronsgaard , E. Kerins , M. I. Andersen , S. Rahvar , Y. Wang , O. Wertz , M. Rabus , S. Calchi Novati , G. D'Ago , G. Scarpetta , L. Mancini , The MOA collaboration , : , F. Abe , Y. Asakura , 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 , Y. Muraki , S. Miyazaki , M. Nagakane , K. Ohnishi , N. Rattenbury , To. Saito , A. Sharan , H. Shibai , D. J. Sullivan , T. Sumi , D. Suzuki , P. J. Tristram , T. Yamada , A. Yonehara

Ambiguities in fits of binary lens galactic microlensing events

For observed galactic microlensing events only one fit is usually presented, though, especially for a binary lens, several fits may be possible. This has been shown for the MACHO LMC#1 event (Dominik & Hirshfeld 1996). Here I discuss the…

Astrophysics · Physics 2008-02-03 M. Dominik

OGLE-2016-BLG-1003: First Resolved Caustic-crossing Binary-source Event Discovered by Second-generation Microlensing Surveys

We report the analysis of the first resolved caustic-crossing binary-source microlensing event OGLE-2016-BLG-1003. The event is densely covered by the round-the-clock observations of three surveys. The light curve is characterized by two…

Solar and Stellar Astrophysics · Physics 2017-05-31 Y. K. Jung , A. Udalski , I. A. Bond , J. C. Yee , A. Gould , C. Han , M. D. Albrow , C. -U. Lee , S. -L. Kim , K. -H. Hwang , S. -J. Chung , Y. -H. Ryu , I. -G. Shin , W. Zhu , S. -M. Cha , D. -J. Kim , Y. Lee , B. -G. Park , R. W. Pogge , J. Skowron , M. K. Szymanski , R. Poleski , P. Mroz , S. Kozlowski , P. Pietrukowicz , I. Soszynski , K. Ulaczyk , M. Pawlak , F. Abe , D. P. Bennett , R. Barry , T. Sumi , Y. Asakura , A. Bhattacharya , M. Donachie , A. Fukui , Y. Hirao , Y. Itow , N. Koshimoto , M. C. A. Li , C. H. Ling , K. Masuda , Y. Matsubara , Y. Muraki , M. Nagakane , N. J. Rattenbury , P. Evans , A. Sharan , D. J. Sullivan , D. Suzuki , P. J. Tristram , T. Yamada , T. Yamada , A. Yonehara

MOA-2015-BLG-337: A Planetary System with a Low-mass Brown Dwarf/Planetary Boundary Host, or a Brown Dwarf Binary

We report the discovery and the analysis of the short timescale binary-lens microlensing event, MOA-2015-BLG-337. The lens system could be a planetary system with a very low mass host, around the brown dwarf/planetary mass boundary, or a…

Earth and Planetary Astrophysics · Physics 2018-09-05 S. Miyazaki , T. Sumi , D. P. Bennett , A. Gould , A. Udalski , I. A. Bond , N. Koshimoto , M. Nagakane , N. Rattenbury , F. Abe , A. Bhattacharya , R. Barry , M. Donachie , A. Fukui , Y. Hirao , Y. Itow , K. Kawasaki , M. C. Li , C. H. Ling , Y. Matsubara , T. Matsuo , Y. Muraki , K. Ohnishi , C. Ranc , T. Saito , A. Sharan , H. Shibai , H. Suematsu , D. Suzuki , D. J. Sullivan , P. J. Tristram , T. Yamada , A. Yonehara , S. owski , P. Mr'oz , M. Pawlak , R. Poleski , P. Pietrukowicz , J. Skowron , I. Soszy'nski , M. K. Szyma'nski , K. Ulaczyk , M. D. Albrow , S. -J. Chung , C. Han , Y. K. Jung , K. -H. Hwang , Y. -H. Ryu , I. -G. Shin , Y. Shvartzvald , J. C. Yee , W. Zang , 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

The OGLE Collection of Variable Stars. Over 450 000 Eclipsing and Ellipsoidal Binary Systems Toward the Galactic Bulge

We present a collection of 450 598 eclipsing and ellipsoidal binary systems detected in the OGLE fields toward the Galactic bulge. The collection consists of binary systems of all types: detached, semi-detached, and contact eclipsing…

Solar and Stellar Astrophysics · Physics 2017-01-13 I. Soszyński , M. Pawlak , P. Pietrukowicz , A. Udalski , M. K. Szymański , Ł. Wyrzykowski , K. Ulaczyk , R. Poleski , S. Kozlowski , D. M. Skowron , J. Skowron , P. Mróz , A. Hamanowicz

OGLE-2017-BLG-0537: Microlensing Event with a Resolvable Lens in $\lesssim 5$ years from High-resolution Follow-up Observations

We present the analysis of the binary-lens microlensing event OGLE-2017-BLG-0537. The light curve of the event exhibits two strong caustic-crossing spikes among which the second caustic crossing was resolved by high-cadence surveys. It is…

Solar and Stellar Astrophysics · Physics 2018-08-15 Y. K. Jung , C. Han , A. Udalski , A. Gould , M. D. Albrow , S. -J. Chung , K. -H. Hwang , C. -U. Lee , Y. -H. Ryu , I. -G. Shin , Y. Shvartzvald , J. C. Yee , W. Zang , W. Zhu , S. -M. Cha , D. -J. Kim , H. -W. Kim , S. -L. Kim , D. -J. Lee , Y. Lee , B. -G. Park , R. W. Pogge , W. -T. Kim , P. Mróz , R. Poleski , J. Skowron , M. K. Szymański , I. Soszyński , S. Kozłowski , P. Pietrukowicz , K. Ulaczyk , M. Pawlak

OGLE-2018-BLG-0022: A Nearby M-dwarf Binary

We report observations of the binary microlensing event OGLE-2018-BLG-0022, provided by the ROME/REA Survey, which indicate that the lens is a low-mass binary star consisting of M3 (0.375+/-0.020 Msun) and M7 (0.098+/-0.005 Msun)…

Earth and Planetary Astrophysics · Physics 2019-05-15 R. A. Street , E. Bachelet , Y. Tsapras , M. P. G. Hundertmark , V. Bozza , M. Dominik , D. M. Bramich , A. Cassan , K. Horne , S. Mao , A. Saha , J. Wambsganss , Weicheng Zang , U. G. Jorgensen , P. Longa-Pena , N. Peixinho , S. Sajadian , M. J. Burgdorf , J. Campbell-White , S. Dib , D. F. Evans , Y. I. Fujii , T. C. Hinse , E. Khalouei , S. Lowry , S. Rahvar , M. Rabus , J. Skottfelt , C. Snodgrass , J. Southworth , J. Tregloan-Reed

A possible binary system of a stellar remnant in the high magnification gravitational microlensing event OGLE-2007-BLG-514

We report the extremely high magnification (A > 1000) binary microlensing event OGLE-2007-BLG-514. We obtained good coverage around the double peak structure in the light curve via follow-up observations from different observatories. The…

Earth and Planetary Astrophysics · Physics 2015-06-05 N. Miyake , A. Udalski , T. Sumi , D. P. Bennett , S. Dong , R. A. Street , J. Greenhill , I. A. Bond , A. Gould , M. Kubiak , M. K. Szymanski , G. Pietrzynski , I. Soszynski , K. Ulaczyk , L. Wyrzykowski , F. Abe , A. Fukui , K. Furusawa , S. Holderness , Y. Itow , A. Korpela , C. H. Ling , K. Masuda , Y. Matsubara , Y. Muraki , T. Nagayama , K. Ohnishi , N. Rattenbury , To. Saito , T. Sako , D. J. Sullivan , W. L. Sweatman , P. J. Tristram , P. C. M. Yock , W. Allen , G. W. Christie , D. L. DePoy , B. S. Gaudi , C. Han , C. -U. Lee , J. McCormick , B. Monard , T. Natusch , B. -G. Park , R. W. Pogge , A. Allan , M. Bode , D. M. Bramich , N. Clay , M. Dominik , K. D. Horne , N. Kains , C. Mottram , C. Snodgrass , I. Steele , Y. Tsapras , M. D. Albrow , V. Batista , J. P. Beaulieu , S. Brillant , M. Burgdorf , J. A. R. Caldwell , A. Cassan , A. Cole , K. H. Cook , Ch. Coutures , S. Dieters , D. Dominis Prester , J. Donatowicz , P. Fouque , U. G. Jorgensen , S. Kane , D. Kubas , J. B. Marquette , R. Martin , J. Menzies , K. R. Pollard , K. C. Sahu , J. Wambsganss , A. Williams , M. Zub

Eclipsing Binary Stars in the OGLE-III Galactic Disk Fields

We present the analysis of 11 589 eclipsing binary stars identified in twenty-one OGLE-III Galactic disk fields toward constellations of Carina, Centaurus, and Musca. All eclipsing binaries but 402 objects are new discoveries. The binaries…

Astrophysics of Galaxies · Physics 2013-08-05 P. Pietrukowicz , P. Mroz , I. Soszynski , A. Udalski , R. Poleski , M. K. Szymanski , M. Kubiak , G. Pietrzynski , L. Wyrzykowski , K. Ulaczyk , S. Kozlowski , J. Skowron

Spitzer as Microlens Parallax Satellite: Mass and Distance Measurements of Binary Lens System OGLE-2014-BLG-1050L

We report the first mass and distance measurement of a caustic-crossing binary system OGLE-2014-BLG-1050L using the space-based microlens parallax method. \emph{Spitzer} captured the second caustic-crossing of the event, which occurred…

Solar and Stellar Astrophysics · Physics 2015-05-27 Wei Zhu , A. Udalski , A. Gould , M. Dominik , V. Bozza , C. Han , J. C. Yee , S. Calchi Novati , C. A. Beichman , S. Carey , R. Poleski , J. Skowron , S. Kozlowski , P. Mroz , P. Pietrukowicz , G. Pietrzynski , M. K. Szymanski , I. Soszynski , K. Ulaczyk , L. Wyrzykowski , C. Han , B. S. Gaudi , R. W. Pogge , D. L. DePoy , Y. K. Jung , J. -Y. Choi , K. -H. Hwang , I. -G. Shin , H. Park , J. Jeong

OGLE-2019-BLG-1470LABc: Another Microlensing Giant Planet in a Binary System?

We report the discovery and analysis of a candidate triple-lens single-source (3L1S) microlensing event, OGLE-2019-BLG-1470. This event was first classified as a normal binary-lens single-source (2L1S) event, but a careful 2L1S modelling…

Earth and Planetary Astrophysics · Physics 2022-09-08 Renkun Kuang , Weicheng Zang , Youn Kil Jung , Andrzej Udalski , Hongjing Yang , Shude Mao , Michael D. Albrow , Sun-Ju Chung , Andrew Gould , Cheongho Han , Kyu-Ha Hwang , Yoon-Hyun Ryu , In-Gu Shin , Yossi Shvartzvald , Jennifer C. Yee , Sang-Mok Cha , Dong-Jin Kim , Hyoun-Woo Kim , Seung- Lee Kim , Chung-Uk Lee , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Przemek Mróz , Jan Skowron , Radoslaw Poleski , Michał K. Szymański , Igor Soszyński , Paweł Pietrukowicz , Szymon Kozłowski , Krzysztof Ulaczyk , Krzysztof A. Rybicki , Patryk Iwanek , Marcin Wrona , Mariusz Gromadzki , Hanyue Wang , Shuo Huang , Wei Zhu

Discovery and photometry of the binary-lensing caustic-crossing event EROS-BLG-2000-5

The EROS collaboration has developed a real time alert system, which was operational in 1999 and 2000. A very long binary-lensing caustic crossing event, EROS-BLG-2000-5, was found in the 2000 season and monitored by EROS. EROS photometric…

Astrophysics · Physics 2007-05-23 C. Afonso

Binary microlensing event OGLE-2009-BLG-020 gives a verifiable mass, distance and orbit predictions

We present the first example of binary microlensing for which the parameter measurements can be verified (or contradicted) by future Doppler observations. This test is made possible by a confluence of two relatively unusual circumstances.…

Solar and Stellar Astrophysics · Physics 2015-05-27 J. Skowron , A. Udalski , A. Gould , Subo Dong , L. A. G. Monard , C. Han , C. R. Nelson , J. McCormick , D. Moorhouse , G. Thornley , A. Maury , D. M. Bramich , J. Greenhill , S. Kozlowski , I. Bond , R. Poleski , L. Wyrzykowski , K. Ulaczyk , M. Kubiak , M. K. Szymanski , G. Pietrzynski , I. Soszynski , B. S. Gaudi , J. C. Yee , L. -W. Hung , R. W. Pogge , D. L. DePoy , C. -U. Lee , B. -G. Park , W. Allen , F. Mallia , J. Drummond , G. Bolt , A. Allan , P. Browne , N. Clay , M. Dominik , S. Fraser , K. Horne , N. Kains , C. Mottram , C. Snodgrass , I. Steele , R. A. Street , Y. Tsapras , F. Abe , D. P. Bennett , C. S. Botzler , D. Douchin , M. Freeman , A. Fukui , K. Furusawa , 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 , N. Miyake , K. Nishimoto , K. Ohnishi , Y. C. Perrott , N. Rattenbury , To. Saito , L. Skuljan , D. J. Sullivan , T. Sumi , D. Suzuki , W. L. Sweatman , P. J. Tristram , K. Wada , P. C. M. Yock , J. -P. Beaulieu , P. Fouque , M. D. Albrow , V. Batista , S. Brillant , J. A. R. Caldwell , A. Cassan , A. Cole , K. H. Cook , Ch. Coutures , S. Dieters , D. Dominis Prester , J. Donatowicz , S. R. Kane , D. Kubas , J. -B. Marquette , R. Martin , J. Menzies , K. C. Sahu , J. Wambsganss , A. Williams , M. Zub