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

OGLE-2008-BLG-510: first automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?

The microlensing event OGLE-2008-BLG-510 is characterised by an evident asymmetric shape of the peak, promptly detected by the ARTEMiS system in real time. The skewness of the light curve appears to be compatible both with binary-lens and…

Earth and Planetary Astrophysics · Physics 2015-06-04 V. Bozza , M. Dominik , N. J. Rattenbury , U. G. Joergensen , Y. Tsapras , D. M. Bramich , A. Udalski , I. A. Bond , C. Liebig , A. Cassan , P. Fouque , A. Fukui , M. Hundertmark , I. -G. Shin , S. H. Lee , J. -Y. Choi , S. -Y. Park , A. Gould , A. Allan , S. Mao , L. Wyrzykowski , R. A. Street , D. Buckley , T. Nagayama , M. Mathiasen , T. C. Hinse , S. Calchi Novati , K. Harpsoee , L. Mancini , G. Scarpetta , T. Anguita , M. J. Burgdorf , K. Horne , A. Hornstrup , N. Kains , E. Kerins , P. Kjaergaard , G. Masi , S. Rahvar , D. Ricci , C. Snodgrass , J. Southworth , I. A. Steele , J. Surdej , C. C. Thoene , J. Wambsganss , M. Zub , M. D. Albrow , V. Batista , J. -P. Beaulieu , D. P. Bennett , J. A. R. Caldwell , A Cole , K. H. Cook , C. Coutures , S. Dieters , D. Dominis Prester , J. Donatowicz , J. Greenhill , S. R. Kane , D. Kubas , J. -B. Marquette , R. Martin , J. Menzies , K. R. Pollard , K. C. Sahu , A. Williams , M. K. Szymanski , M. Kubiak , G. Pietrzynski , I. Soszynski , R. Poleski , K. Ulaczyk , D. L. DePoy , S. Dong , C. Han , J. Janczak , C. -U. Lee , R. W. Pogge , F. Abe , K. Furusawa , J. B. Hearnshaw , Y. Itow , P. M. Kilmartin , A. V. Korpela , W. Lin , C. H. Ling , K. Masuda , Y. Matsubara , N. Miyake , Y. Muraki , K. Ohnishi , Y. C. Perrott , To. Saito , L. Skuljan , D. J. Sullivan , T. Sumi , D. Suzuki , W. L. Sweatman , P. J. Tristram , K. Wada , P. C. M. Yock , A. Gulbis , Y. Hashimoto , A. Kniazev , P. Vaisanen

Automated detection and modeling of binary microlensing events in OGLE-IV data. I. Events with well-separated bumps

Gravitational microlensing depends primarily on the lens mass and presents a larger occurrence rate in crowded regions, which makes it the best tool to uncover the initial mass function (IMF) of low-mass stars in the Galactic bulge. The…

Astrophysics of Galaxies · Physics 2025-06-12 R. A. P. Oliveira , R. Poleski , P. Mróz , A. Udalski , J. Skowron , M. Mróz , M. K. Szymański , I. Soszyński , K. Ulaczyk , P. Pietrukowicz , K. Rybicki , P. Iwanek , M. Wrona , M. Gromadzki

OGLE-2017-BLG-0482Lb: A Microlensing Super-Earth Orbiting a Low-mass Host Star

We report the discovery of a planetary system in which a super-earth orbits a late M-dwarf host. The planetary system was found from the analysis of the microlensing event OGLE-2017-BLG-0482, wherein the planet signal appears as a…

Earth and Planetary Astrophysics · Physics 2018-05-02 C. Han , Y. Hirao , A. Udalski , C. -U. Lee , V. Bozza , A. Gould , F. Abe , R. Barry , I. A. Bond , D. P. Bennett , A. Bhattacharya , M. Donachie , P. Evans , A. Fukui , 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 , P. Mróz , R. Poleski , S. Kozłowski , I. Soszyński , P. Pietrukowicz , J. Skowron , M. K. Szymańsk , K. Ulaczyk , M. Pawlak , K. Rybicki , P. Iwanek , M. D. Albrow , S. -J. Chung , K. -H. Hwang , Y. K. Jung , D. Kim , W. -T. Kim , H. -W. Kim , Y. -H. Ryu , I. -G. Shin , Y. Shvartzvald , J. C. Yee , W. Zhu , S. -M. Cha , S. -L. Kim , D. -J. Kim , D. -J. Lee , Y. Lee , B. -G. Park , R. W. Pogge

Black Hole, Neutron Star and White Dwarf Candidates from Microlensing with OGLE-III

Most stellar remnants so far have been found in binary systems, where they interact with matter from their companions. Isolated neutron stars and black holes are difficult to find as they are dark, yet they are predicted to exist in our…

Solar and Stellar Astrophysics · Physics 2016-03-16 L. Wyrzykowski , Z. Kostrzewa-Rutkowska , J. Skowron , K. A. Rybicki , P. Mroz , S. Kozlowski , A. Udalski , M. K. Szymanski , G. Pietrzynski , I. Soszynski , K. Ulaczyk , P. Pietrukowicz , R. Poleski , M. Pawlak , K. Ilkiewicz , N. J. Rattenbury

Ultra-Short-Period Binary Systems in the OGLE Fields Toward the Galactic Bulge

We present a sample of 242 ultra-short-period (P < 0.22 d) eclipsing and ellipsoidal binary stars identified in the OGLE fields toward the Galactic bulge. Based on the light curve morphology, we divide the sample into candidates for contact…

Solar and Stellar Astrophysics · Physics 2015-03-20 I. Soszynski , K. Stepien , B. Pilecki , P. Mroz , A. Udalski , M. K. Szymanski , G. Pietrzynski , L. Wyrzykowski , K. Ulaczyk , R. Poleski , S. Kozlowski , P. Pietrukowicz , J. Skowron , M. Pawlak

A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071

We report the discovery of a several-Jupiter mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (<1%) photometry at the peak of the event yields an extremely high signal-to-noise ratio…

Astrophysics · Physics 2009-11-11 A. Udalski , M. Jaroszynski , B. Paczynski , M. Kubiak , M. K. Szymanski , I. Soszynski , G. Pietrzynski , K. Ulaczyk , O. Szewczyk , L. Wyrzykowski , G. W. Christie , D. L. DePoy , S. Dong , A. Gal-Yam , B. S. Gaudi , A. Gould , C. Han , S. Lepine , J. McCormick , B. -G. Park , R. W. Pogge , D. P. Bennett , I. A. Bond , Y. Muraki , P. J. Tristram , P. C. M. Yock , J. P. Beaulieu , D. M. Bramich , S. W. Dieters , J. Greenhill , K. Hill , K. Horne , D. Kubas

Faint source star planetary microlensing: the discovery of the cold gas giant planet OGLE-2014-BLG-0676Lb

We report the discovery of a planet --- OGLE-2014-BLG-0676Lb --- via gravitational microlensing. Observations for the lensing event were made by the MOA, OGLE, Wise, RoboNET/LCOGT, MiNDSTEp and $\mu$FUN groups. All analyses of the light…

Earth and Planetary Astrophysics · Physics 2016-12-13 N. J. Rattenbury , D. P. Bennett , T. Sumi , N. Koshimoto , I. A. Bond , A. Udalski , Y. Shvartzvald , D. Maoz , U. G. Jorgensen , M. Dominik , R. A. Street , Y. Tsapras , F. Abe , Y. Asakura , R. Barry , A. Bhattacharya , M. Donachie , P. Evans , M. Freeman , A. Fukui , Y. Hirao , Y. Itow , M. C. A. Li , C. H. Ling , K. Masuda , Y. Matsubara , Y. Muraki , M. Nagakane , K. Ohnishi , H. Oyokawa , To. Saito , A. Sharan , D. J. Sullivan , D. Suzuki , P. J. Tristram , A. Yonehara , R. Poleski , J. Skowron , P. Mroz , M. K. Szymanski , I. Soszynski , P. Pietrukowicz , S. Kozlowski , K. Ulaczyk , L. Wyrzykowski , M. Friedmann , S. Kaspi , K. Alsubai , P. Browne , J. M. Andersen , V. Bozza , S. Calchi Novati , Y. Damerdji , C. Diehl , S. Dreizler , A. Elyiv , E. Giannini , S. Hardis , K. Harpsoe , T. C. Hinse , C. Liebig , M. Hundertmark , D. Juncher , N. Kains , E. Kerins , H. Korhonen , L. Mancini , R. Martin , M. Mathiasen , M. Rabus , S. Rahvar , G. Scarpetta , J. Skottfelt , C. Snodgrass , J. Surdej , J. Taylor , J. Tregloan-Reed , C. Vilela , J. Wambsganss , A. Williams , G. D'Ago , E. Bachelet , D. M. Bramich , R. Figuera Jaimes , K. Horne , J. Menzies , R. Schmidt , I. A. Steele

OGLE-2019-BLG-0825: Constraints on the Source System and Effect on Binary-lens Parameters arising from a Five Day Xallarap Effect in a Candidate Planetary Microlensing Event

We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap…

Earth and Planetary Astrophysics · Physics 2023-07-27 Yuki K. Satoh , Naoki Koshimoto , David P. Bennett , Takahiro Sumi , Nicholas J. Rattenbury , Daisuke Suzuki , Shota Miyazaki , Ian A. Bond , Andrzej Udalski , Andrew Gould , Valerio Bozza , Martin Dominik , Yuki Hirao , Iona Kondo , Rintaro Kirikawa , Ryusei Hamada , Fumio Abe , Richard Barry , Aparna Bhattacharya , Hirosane Fujii , Akihiko Fukui , Katsuki Fujita , Tomoya Ikeno , Stela Ishitani Silva , Yoshitaka Itow , Yutaka Matsubara , Sho Matsumoto , Yasushi Muraki , Kosuke Niwa , Arisa Okamura , Greg Olmschenk , Clément Ranc , Taiga Toda , Mio Tomoyoshi , Paul J. Tristram , Aikaterini Vandorou , Hibiki Yama , Kansuke Yamashita , Przemek Mróz , Radosław Poleski , Jan Skowron , Michał K. Szymański , Radek Poleski , Igor Soszyński , Paweł Pietrukowicz , Szymon Kozłowski , Krzysztof Ulaczyk , Krzysztof A. Rybicki , Patryk Iwanek , Marcin Wrona , Mariusz Gromadzki , Michael D. Albrow , Sun-Ju Chung , Cheongho Han , Kyu-Ha Hwang , Doeon Kim , Youn Kil Jung , Hyoun Woo Kim , Yoon-Hyun Ryu , In-Gu Shin , Yossi Shvartzvald , Hongjing Yang , Jennifer C. Yee , Weicheng Zang , Sang-Mok Cha , Dong-Jin Kim , Seung-Lee Kim , Chung-Uk Lee , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Uffe G. Jørgensen , Penélope Longa-Peña , Sedighe Sajadian , Jesper Skottfelt , Colin Snodgrass , Jeremy Tregloan-Reed , Nanna Bach-Møller , Martin Burgdorf , Giuseppe D'Ago , Lauri Haikala , James Hitchcock , Markus Hundertmark , Elahe Khalouei , Nuno Peixinho , Sohrab Rahvar , John Southworth , Petros Spyratos

The Optical Gravitational Lensing Experiment. the Early Warning System

The discoveries of 17 microlensing event candidates have been reported over the last year by three teams conducting unprecedented mass photometric searches in the direction of the Galactic bulge and the Magellanic Clouds. These include 10…

Astrophysics · Physics 2009-09-25 A. Udalski , M. Szymanski , J. Kaluzny , M. Kubiak , M. Mateo , W. Krzeminski , B. Paczynski

A New Channel for the Detection of Planetary Systems Through Microlensing: II. Repeating Events

In the companion paper we began the task of systematically studying the detection of planets in wide orbits ($a > 1.5 R_E$) via microlensing surveys. In this paper we continue, focusing on repeating events. We find that, if all planetary…

Astrophysics · Physics 2009-10-31 Rosanne Di Stefano , Richard A. Scalzo

OGLE-2005-BLG-018: Characterization of Full Physical and Orbital Parameters of a Gravitational Binary Lens

We present the analysis result of a gravitational binary-lensing event OGLE-2005-BLG-018. The light curve of the event is characterized by 2 adjacent strong features and a single weak feature separated from the strong features. The light…

Solar and Stellar Astrophysics · Physics 2015-05-28 I. -G. Shin , A. Udalski , C. Han , A. Gould , M. Dominik , P. Fouque , M. Kubiak , M. K. Szymanski , G. Pietrzynki , I. Soszynski , K. Ulaczyk , L. Wyrzykowski , D. L. DePoy , S. Dong , B. S. Gaudi , C. -U. Lee , B. -G. Park , R. W. Pogge , M. D. Albrow , A. Allan , J. P. Beaulieu , D. P. Bennett , M. Bode , D. M. Bramich , S. Brillant , M. Burgadorf , J. A. R. Caldwell , H. Calitz , A. Cassan , K. H. Cook , E. Corrales , Ch. Coutures , N. Desort , S. Dieters , D. Dominis Prester , J. Donatowicz , S. N. Fraser , J. Greenhill , K. Hill , M. Hoffman , K. Horne , U. G. Jorgensen , S. R. Kane , D. Kubas , J. B. Marquette , R. Martin , P. Meintjes , J. Menzies , C. Mottram , T. Naylor , K. R. Pollard , K. C. Sahu , C. Snodgrass , I. Steele , C. Vinter , J. Wambsganss , A. Williams , K. Woller

The frequency of snowline-region planets from four-years of OGLE-MOA-Wise second-generation microlensing

We present a statistical analysis of the first four seasons from a "second-generation" microlensing survey for extrasolar planets, consisting of near-continuous time coverage of 8 deg$^2$ of the Galactic bulge by the OGLE, MOA, and Wise…

Earth and Planetary Astrophysics · Physics 2016-03-16 Y. Shvartzvald , D. Maoz , A. Udalski , T. Sumi , M. Friedmann , S. Kaspi , R. Poleski , M. K. Szymański , J. Skowron , S. Kozłowski , Ł. Wyrzykowski , P. Mróz , P. Pietrukowicz , G. Pietrzyński , I. Soszyński , K. Ulaczyk , F. Abe , R. K. Barry , D. P. Bennett , A. Bhattacharya , I. A. Bond , M. Freeman , K. Inayama , Y. Itow , N. Koshimoto , C. H. Ling , K. Masuda , A. Fukui , Y. Matsubara , Y. Muraki , K. Ohnishi , N. J. Rattenbury , To. Saito , D. J. Sullivan , D. Suzuki , P. J. Tristram , Y. Wakiyama , A. Yonehara

Detached Red Giant Eclipsing Binary Twins: Rosetta Stones to the Galactic Bulge

We identify 34 highly-probable detached, red giant eclipsing binary pairs among 315 candidates in Devor's catalog of $\sim$10,000 OGLE-II eclipsing binaries. We estimate that there should be at least 200 such systems in OGLE-III. We show…

Astrophysics of Galaxies · Physics 2012-06-14 David M. Nataf , Andrew Gould , Marc H. Pinsonneault

The second multiple-planet system discovered by microlensing: OGLE-2012-BLG-0026Lb, c, a pair of jovian planets beyond the snow line

We report the discovery of a planetary system from observation of the high-magnification microlensing event OGLE-2012-BLG-0026. The lensing light curve exhibits a complex central perturbation with multiple features. We find that the…

Earth and Planetary Astrophysics · Physics 2015-06-11 C. Han , A. Udalski , J. -Y. Choi , J. C. Yee , A. Gould , G. Christie , T. -G. Tan , M. K. Szymański , M. Kubiak , I. Soszyński , G. Pietrzyński , R. Poleski , K. Ulaczyk , P. Pietrukowicz , S. Kozłowski , J. Skowron , Ł. Wyrzykowski , L. A. Almeida , V. Batista , D. L. Depoy , Subo Dong , J. Drummond , B. S. Gaudi , K. -H. Hwang , F. Jablonski , Y. -K. Jung , C. -U. Lee , J. -R. Koo , J. McCormick , L. A. G. Monard , T. Natusch , H. Ngan , H. Park , R. W. Pogge , Ian Porritt , I. -G. Shin

Two Stars Two Ways: Confirming a Microlensing Binary Lens Solution with a Spectroscopic Measurement of the Orbit

Light curves of microlensing events involving stellar binaries and planetary systems can provide information about the orbital elements of the system due to orbital modulations of the caustic structure. Accurately measuring the orbit in…

Solar and Stellar Astrophysics · Physics 2016-04-27 Jennifer C. Yee , John Asher Johnson , Jan Skowron , Andrew Gould , J. Sebastian Pineda , Jason Eastman , Andrew Vanderburg , Andrew Howard

OGLE-2017-BLG-1130: The First Binary Gravitational Microlens Detected From Spitzer Only

We analyze the binary gravitational microlensing event OGLE-2017-BLG-1130 (mass ratio q~0.45), the first published case in which the binary anomaly was only detected by the Spitzer Space Telescope. This event provides strong evidence that…

Earth and Planetary Astrophysics · Physics 2018-06-13 Tianshu Wang , S. Calchi Novati , A. Udalski , A. Gould , Shude Mao , W. Zang , C. Beichman , G. Bryden , S. Carey , B. S. Gaudi , C. B. Henderson , Y. Shvartzvald , J. C. Yee , P. Mroz , R. Poleski , J. Skowron , M. K. Szymanski , I. Soszynski , S. Kozlowski , P. Pietrukowicz , K. Ulaczyk , M. Pawlak , M. D. Albrow , S. -J. Chung , 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

Microlensing brown-dwarf companions in binaries detected during the 2022 and 2023 seasons

Building on previous works to construct a homogeneous sample of brown dwarfs in binary systems, we investigate microlensing events detected by the Korea Microlensing Telescope Network (KMTNet) survey during the 2022 and 2023 seasons. Given…

Solar and Stellar Astrophysics · Physics 2024-08-22 Cheongho Han , Ian A. Bond , Andrzej Udalski , Chung-Uk Lee , Andrew Gould , Michael D. Albrow , Sun-Ju Chung , Kyu-Ha Hwang , Youn Kil Jung , Yoon-Hyun Ryu , Yossi Shvartzvald , In-Gu Shin , Jennifer C. Yee , Hongjing Yang , Weicheng Zang , Sang-Mok Cha , Doeon Kim , Dong-Jin Kim , Seung-Lee Kim , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Fumio Abe , Ken Bando , Richard Barry , David P. Bennett , Aparna Bhattacharya , Hirosame Fujii , Akihiko Fukui , Ryusei Hamada , Shunya Hamada , Naoto Hamasaki , Yuki Hirao , Stela Ishitani Silva , Yoshitaka Itow , Rintaro Kirikawa , Naoki Koshimoto , Yutaka Matsubara , Shota Miyazaki , Yasushi Muraki , Tutumi Nagai , Kansuke Nunota , Greg Olmschenk , Clément Ranc , Nicholas J. Rattenbury , Yuki Satoh , Takahiro Sumi , Daisuke Suzuki , Mio Tomoyoshi , Paul J. Tristram , Aikaterini Vandorou , Hibiki Yama , Kansuke Yamashita , 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

The Optical Gravitational Lensing Experiment. OGLE #7: Binary Microlens or a New Unusual Variable?

We present the light curve of an unusual variable object, OGLE #7, detected during the OGLE search for microlensing events. After one season of being in a low, normal state, the star brightened by more than 2~mag with a characteristic…

Astrophysics · Physics 2009-10-22 A. Udalski , M. Szymanski , S. Mao , R. Di Stefano , J. Kaluzny , M. Kubiak , M. Mateo , W. Krzeminski

Spitzer Observations of OGLE-2015-BLG-1212 Reveal a New Path to Breaking Strong Microlens Degeneracies

Spitzer microlensing parallax observations of OGLE-2015-BLG-1212 decisively breaks a degeneracy between planetary and binary solutions that is somewhat ambiguous when only ground-based data are considered. Only eight viable models survive…

Earth and Planetary Astrophysics · Physics 2016-04-06 V. Bozza , Y. Shvartzvald , A. Udalski , S. Calchi Novati , I. A. Bond , C. Han , M. Hundertmark , R. Poleski , M. Pawlak , M. K. Szymański , J. Skowron , P. Mróz , S. Kozłowski , Ł. Wyrzykowski , P. Pietrukowicz , I. Soszyński , K. Ulaczyk , C. Beichman , G. Bryden , S. Carey , M. Fausnaugh , B. S. Gaudi , A. Gould , C. B. Henderson , R. W. Pogge , B. Wibking , J. C. Yee , W. Zhu , F. Abe , Y. Asakura , R. K. Barry , D. P. Bennett , A. Bhattacharya , M. Donachie , M. Freeman , A. Fukui , Y. Hirao , K. Inayama , Y. Itow , N. Koshimoto , M. C. A. Li , C. H. Ling , K. Masuda , Y. Matsubara , Y. Muraki , M. Nagakane , T. Nishioka , K. Ohnishi , H. Oyokawa , N. Rattenbury , T. Saito , A. Sharan , D. J. Sullivan , T. Sumi , D. Suzuki , P. J. Tristram , Y. Wakiyama , A. Yonehara , J. -Y. Choi , H. Park , Y. K. Jung , I. -G. Shin , M. D. Albrow , B. -G. Park , S. -L. Kim , C. -U. Lee , S. -M. Cha , D. -J. Kim , Y. Lee , M. Dominik , U. G. Jørgensen , M. I. Andersen , D. M. Bramich , M. J. Burgdorf , S. Ciceri , G. D'Ago , D. F. Evans , R. Figuera Jaimes , S. -H. Gu , T. C. Hinse , N. Kains , E. Kerins , H. Korhonen , M. Kuffmeier , L. Mancini , A. Popovas , M. Rabus , S. Rahvar , R. T. Rasmussen , G. Scarpetta , J. Skottfelt , C. Snodgrass , J. Southworth , J. Surdej , E. Unda-Sanzana , C. von Essen , Y. -B. Wang , O. Wertz , D. Maoz , M. Friedmann , S. Kaspi

On the Selection of Photometric Planetary Transits

We present a new method for differentiating between planetary transits and eclipsing binaries based on the presence of the ellipsoidal light variations. These variations can be used to detect stellar secondaries with masses ~0.2 M_sun…

Astrophysics · Physics 2008-11-26 A. J. Drake