Related papers: Accurate stellar parameters and distance to two ev…

Chemical evolution of high-mass stars in close binaries. II. The evolved component of the eclipsing binary V380 Cygni

The eclipsing and double-lined spectroscopic binary V380 Cyg is an extremely important probe of stellar evolution: its primary component is a high-mass star at the brink of leaving the main sequence whereas the secondary star is still in…

Solar and Stellar Astrophysics · Physics 2015-05-13 K. Pavlovski , E. Tamajo , P. Koubsky , J. Southworth , S. Yang , V. Kolbas

Masses and Orbital Constraints for the OGLE-2006-BLG-109Lb,c Jupiter/Saturn Analog Planetary System

We present a new analysis of the Jupiter+Saturn analog system, OGLE-2006-BLG-109Lb,c, which was the first double planet system discovered with the gravitational microlensing method. This is the only multi-planet system discovered by any…

Earth and Planetary Astrophysics · Physics 2014-11-20 D. P. Bennett , S. H. Rhie , S. Nikolaev , B. S. Gaudi , A. Udalski , A. Gould , G. W. Christie , D. Maoz , S. Dong , J. McCormick , M. K. Szymanski , P. J. Tristram , B. Macintosh , K. H. Cook , M. Kubiak , G. Pietrzynski , I. Soszynski , O. Szewczyk , K. Ulaczyk , L. Wyrzykowski , D. L. DePoy , C. Han , S. Kaspi , C. -U. Lee , F. Mallia , T. Natusch , B. -G. Park , R. W. Pogge , D. Polishook , F. Abe , I. A. Bond , C. S. Botzler , A. Fukui , J. B. Hearnshaw , Y. Itow , K. Kamiya , A. V. Korpela , P. M. Kilmartin , W. Lin , K. Masuda , Y. Matsubara , M. Motomura , Y. Muraki , S. Nakamura , T. Okumura , K. Ohnishi , Y. C. Perrott , N. J. Rattenbury , T. Sako , To. Saito , S. Sato , L. Skuljan , D. J. Sullivan , T. Sumi , W. L. Sweatman , P. C. M. Yock , M. Albrow , A. Allan , J. -P. Beaulieu , D. M. Bramich , M. J. Burgdorf , C. Coutures , M. Dominik , S. Dieters , P. Fouque , J. Greenhill , K. Horne , C. Snodgrass , I. Steele , Y. Tsapras , B. Chaboyer , A. Crocker , S. Frank

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

Confronting uncertainties in stellar physics: calibrating convective overshooting with eclipsing binaries

As part of a larger program aimed at better quantifying the uncertainties in stellar computations, we attempt to calibrate the extent of convective overshooting in low to intermediate mass stars by means of eclipsing binary systems. We…

Solar and Stellar Astrophysics · Physics 2015-03-11 Richard J. Stancliffe , Luca Fossati , Jean-Claude Passy , Fabian R. N. Schneider

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

OGLE-2011-BLG-0265Lb: a Jovian Microlensing Planet Orbiting an M Dwarf

We report the discovery of a Jupiter-mass planet orbiting an M-dwarf star that gave rise to the microlensing event OGLE-2011-BLG-0265. Such a system is very rare among known planetary systems and thus the discovery is important for…

Earth and Planetary Astrophysics · Physics 2015-06-23 J. Skowron , I. -G. Shin , A. Udalski , C. Han , T. Sumi , Y. Shvartzvald , A. Gould , D. Dominis-Prester , R. A. Street , U. G. Jørgensen , D. P. Bennett , V. Bozza , M. K. Szymański , M. Kubiak , G. Pietrzyński , I. Soszyński , R. Poleski , S. Kozłowski , P. Pietrukowicz , K. Ulaczyk , Ł. Wyrzykowski , F. Abe , A. Bhattacharya , I. A. Bond , C. S. Botzler , M. Freeman , A. Fukui , D. Fukunaga , Y. Itow , C. H. Ling , N. Koshimoto , K. Masuda , Y. Matsubara , Y. Muraki , S. Namba , K. Ohnishi , L. C. Philpott , N. Rattenbury , T. Saito , D. J. Sullivan , D. Suzuki , P. J. Tristram , P. C. M. Yock , D. Maoz , S. Kaspi , M. Friedman , L. A. Almeida , V. Batista , G. Christie , J. -Y. Choi , D. L. DePoy , B. S. Gaudi , C. Henderson , K. -H. Hwang , F. Jablonski , Y. K. Jung , C. -U. Lee , J. McCormick , T. Natusch , H. Ngan , H. Park , R. W. Pogge , J. Yee , M. D. Albrow , E. Bachelet , J. -P. Beaulieu , S. Brillant , J. A. R. Caldwell , A. Cassan , A. Cole , E. Corrales , Ch. Coutures , S. Dieters , J. Donatowicz , P. Fouqué , J. Greenhill , N. Kains , S. R. Kane , D. Kubas , J. -B. Marquette , R. Martin , J. Menzies , K. R. Pollard , C. Ranc , K. C. Sahu , J. Wambsganss , A. Williams , D. Wouters , Y. Tsapras , D. M. Bramich , K. Horne , M. Hundertmark , C. Snodgrass , I. A. Steele , K. A. Alsubai , P. Browne , M. J. Burgdorf , S. Calchi Novati , P. Dodds , M. Dominik , S. Dreizler , X. -S. Fang , C. -H. Gu , Hardis , K. Harpsøe , F. V. Hessman , T. C. Hinse , A. Hornstrup , J. Jessen-Hansen , E. Kerins , C. Liebig , M. Lund , M. Lundkvist , L. Mancini , M. Mathiasen , M. T. Penny , S. Rahvar , D. Ricci , G. Scarpetta , J. Skottfelt , J. Southworth , J. Surdej , J. Tregloan-Reed , O. Wertz

Orbital and physical parameters of eclipsing binaries from the ASAS catalogue - VIII. The totally-eclipsing double-giant system HD 187669

We present the first full orbital and physical analysis of HD 187669, recognized by the All-Sky Automated Survey (ASAS) as the eclipsing binary ASAS J195222-3233.7. We combined multi-band photometry from the ASAS and SuperWASP public…

Solar and Stellar Astrophysics · Physics 2015-06-23 K. G. Hełminiak , D. Graczyk , M. Konacki , B. Pilecki , M. Ratajczak , G. Pietrzyński , P. Sybilski , S. Villanova , W. Gieren , G. Pojmański , P. Konorski , K. Suchomska , D. E. Reichart , K. M . Ivarsen , J. B. , Haislip , A. P. LaCluyze

Results from the Optical Gravitational Lensing Experiment (OGLE)

The analysis of the first three years of the OGLE data revealed 12 microlensing events of the Galactic bulge stars, with the characteristic time scales in the range $ 8.6 < t_0 < 80 $ days, where $ t_0 = R_E / V $. A complete sample of nine…

Astrophysics · Physics 2007-05-23 B. Paczynski , K. Z. Stanek , A. Udalski , M. Szymanski , J. Kaluzny , M. Kubiak , M. Mateo , W. Krzeminski , G. W. Preston

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

Testing blend scenarios for extrasolar transiting planet candidates. II. -- OGLE-TR-56

We re-examine the photometric and spectroscopic evidence available for the star OGLE-TR-56, recently discovered to harbor a giant planet presenting transits and orbiting with a period of 1.21 days. We investigate the possibility that the…

Astrophysics · Physics 2009-11-10 Guillermo Torres , Maciej Konacki , Dimitar D. Sasselov , Saurabh Jha , ;

OGLE-2013-BLG-0132Lb and OGLE-2013-BLG-1721Lb: Two Saturn-mass Planets Discovered around M-dwarfs

We present the discovery of two planetary systems consisting of a Saturn-mass planet orbiting an M-dwarf, which were detected in faint microlensing events OGLE-2013-BLG-0132 and OGLE-2013-BLG-1721. The planetary anomalies were covered with…

Earth and Planetary Astrophysics · Physics 2017-11-08 Przemek Mroz , A. Udalski , I. A. Bond , J. Skowron , T. Sumi , C. Han , M. K. Szymanski , I. Soszynski , R. Poleski , P. Pietrukowicz , S. Kozlowski , L. Wyrzykowski , K. Ulaczyk , F. Abe , Y. Asakura , R. K. Barry , D. P. Bennett , A. Bhattacharya , M. Donachie , P. Evans , A. Fukui , Y. Hirao , Y. Itow , N. Koshimoto , M. C. A. Li , C. H. Ling , K. Masuda , Y. Matsubara , Y. Muraki , M. Nagakane , K. Ohnishi , C. Ranc , N. J. Rattenbury , To. Saito , A. Sharan , D. J. Sullivan , D. Suzuki , P. J. Tristram , T. Yamada , T. Yamada , A. Yonehara

Apsidal motion and TESS light curves of two southern eclipsing binaries with high eccentricity: V1647 Sgr and V2283 Sgr

The study of apsidal motion rates in eccentric eclipsing binaries provides an important observational test of theoretical models of stellar structure and evolution. Precise physical parameters of the stellar components together with…

Solar and Stellar Astrophysics · Physics 2026-03-11 Marek Wolf , Petr Zasche , Miloslav Zejda , Martin Mašek

Photometric Solutions for Detached Eclipsing Binaries: selection of ideal distance indicators in the SMC

Detached eclipsing binary stars provide a robust one-step distance determination to nearby galaxies. As a by-product of Galactic microlensing searches, catalogs of thousands of variable stars including eclipsing binaries have been produced…

Astrophysics · Physics 2009-11-06 J. S. B. Wyithe , R. E. Wilson

Fundamental Properties and Distances of LMC Eclipsing Binaries: III. EROS 1044

We present results from a detailed analysis of a third eclipsing binary (EB) system in the Large Magellanic Cloud, EROS 1044 (~B2 IV-V + ~B2 III-IV). Our study combines the "classical" EB study of light and radial velocity curves with…

Astrophysics · Physics 2009-11-07 Ignasi Ribas , Edward L. Fitzpatrick , Frank P. Maloney , Edward F. Guinan , Andrzej Udalski

OGLE-2016-BLG-1195Lb: A Sub-Neptune Beyond the Snow Line of an M-dwarf Confirmed by Keck AO

We present the analysis of high resolution follow-up observations of OGLE-2016-BLG-1195 using Laser Guide Star Adaptive Optics with Keck, seven years after the event's peak. We resolve the lens, measuring its flux and the relative…

Earth and Planetary Astrophysics · Physics 2025-05-27 Aikaterini Vandorou , Lisa Dang , David P. Bennett , Naoki Koshimoto , Sean K. Terry , Jean-Phillipe Beaulieu , Christophe Alard , Aparna Bhattacharya , Joshua W. Blackman , Tarik Bouchoutrouch-Ku , Andrew A. Cole , Nicolas B. Cowan , Jean-Baptiste Marquette , Clément Ranc , Natalia Rektsini

OGLE-2019-BLG-0304: Competing Interpretations between a Planet-binary Model and a Binary-source + Binary-lens model

We analyze the microlensing event OGLE-2019-BLG-0304, whose light curve exhibits two distinctive features: a deviation in the peak region and a second bump appearing $\sim 61$~days after the main peak. Although a binary-lens model can…

Earth and Planetary Astrophysics · Physics 2021-10-27 Cheongho Han , Andrzej Udalski , Chung-Uk Lee , Doeon Kim , Yoon-Hyun Ryu , Michael D. Albrow , Sun-Ju Chung , Andrew Gould , Kyu-Ha Hwang , Youn Kil Jung , Hyoun-Woo Kim , In-Gu Shin , Yossi Shvartzvald , Jennifer C. Yee , Weicheng Zang , Sang-Mok Cha , Dong-Jin Kim , Seung-Lee Kim , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Przemek Mróz , Michał K. Szymański , Jan Skowron , Radosław Poleski , Igor Soszyński , Paweł Pietrukowicz , Szymon Kozłowski , Krzysztof Ulaczyk , Krzysztof A. Rybicki , Patryk Iwanek , Marcin Wrona , Mariusz Gromadzki

Eclipsing Binaries in the OGLE Variable Star Catalogs.V. Long-Period Beta Lyrae-type Systems in the Small Magellanic Cloud and the PLC-beta Relation

Thirty eight long-period (P>10 days), apparently contact binary stars discovered by the OGLE-II project in the SMC appear to be Beta Lyrae-type systems with ellipsoidal variations of the cool components dominating over eclipse effects in…

Astrophysics · Physics 2009-10-31 Slavek M. Rucinski , Carla Maceroni

Binary Lenses in OGLE-III EWS Database. Seasons 2002--2003

We present 15 binary lens candidates from OGLE-III Early Warning System database for seasons 2002-2003. We also found 15 events interpreted as single mass lensing of double sources. The candidates were selected by visual light curves…

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

OGLE-BLG182.1.162852: An Eclipsing Binary with a Circumstellar Disk

We present the discovery of a plausible disk-eclipse system OGLE-BLG182.1.162852. The OGLE light curve for OGLE-BLG182.1.162852 shows three episodes of dimming by $I \simeq 2 - 3$ magnitudes, separated by 1277 days. The shape of the light…

Solar and Stellar Astrophysics · Physics 2015-06-23 N. J. Rattenbury , Ł. Wyrzykowski , Z. Kostrzewa-Rutkowska , A. Udalski , S. Kozłowski , M. K. Szymański , G. Pietrzyński , I. Soszyński , R. Poleski , K. Ulaczyk , J. Skowron , P. Pietrukowicz , P. Mróz , D. Skowron

OGLE-2008-BLG-513Lb: The Orbital Solution for a Microlensing Planet

A static binary star solution for OGLE-2008-BLG-513 has been found. The mass ratio and separation for this solution are q~0.28, s~0.86. This model has a chi^2 comparable to the chi^2 of the model with a planetary mass ratio and orbital…

Earth and Planetary Astrophysics · Physics 2011-07-12 J. C. Yee , A. Udalski , Subo Dong , J. Greenhill , Y. Tsapras , I. A. Bond , A. Gould , S. Kozlowski , P. Fouque , M. D. Albrow , C. Han , L. A. G. Monard , J. McCormick , A. Williams , N. Kains , J. An , M. Dominik