J
J.-Y. Choi
Researcher at Chungbuk National University
Publications - 68
Citations - 2550
J.-Y. Choi is an academic researcher from Chungbuk National University. The author has contributed to research in topics: Gravitational microlensing & Light curve. The author has an hindex of 33, co-authored 67 publications receiving 2478 citations.
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Journal ArticleDOI
MOA-2011-BLG-293Lb: A TEST OF PURE SURVEY MICROLENSING PLANET DETECTIONS
Jennifer C. Yee,Yossi Shvartzvald,Avishay Gal-Yam,Ian A. Bond,Andrzej Udalski,Szymon Kozłowski,Chang S. Han,Andrew Gould,Jan Skowron,Daisuke Suzuki,Fumio Abe,David P. Bennett,C. S. Botzler,Paul Chote,M. Freeman,Akihiko Fukui,K. Furusawa,Yoshitaka Itow,S. Kobara,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,N. Miyake,Yasushi Muraki,Kantaro Ohmori,K. Ohnishi,Nicholas J. Rattenbury,To. Saito,Denis J. Sullivan,Takahiro Sumi,Kazuyoshi Suzuki,Winston L. Sweatman,S. Takino,P. J. Tristram,K. Wada,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Igor Soszyński,Radosław Poleski,Krzysztof Ulaczyk,Łukasz Wyrzykowski,Łukasz Wyrzykowski,P. Pietrukowicz,William H. Allen,Leonardo A. Almeida,V. Batista,M. Bos,G. W. Christie,Darren L. DePoy,Subo Dong,Jack D. Drummond,I. Finkelman,B. S. Gaudi,Evgeny Gorbikov,Calen B. Henderson,D. Higgins,Francisco Jablonski,Shai Kaspi,Ilan Manulis,D. Maoz,Jennie McCormick,D. McGregor,L. A. G. Monard,D. Moorhouse,J. A. Muñoz,Tim Natusch,H. Ngan,Eran O. Ofek,Richard W. Pogge,R. Santallo,Thiam-Guan Tan,G. Thornley,In-Gu Shin,J.-Y. Choi,S.-Y. Park,C.-U. Lee,J.-R. Koo +78 more
TL;DR: In the Mathematical and Physical Sciences: 1st Place (The Ohio State University Edward F. Hayes Graduate Research Forum) as mentioned in this paper, the authors of the paper as mentioned in this paper presented a mathematical and physical sciences model.
Journal ArticleDOI
MOA-2011-BLG-262Lb: A Sub-Earth-Mass Moon Orbiting a Gas Giant Primary or a High Velocity Planetary System in the Galactic Bulge
David P. Bennett,V. Batista,Ian A. Bond,C. S. Bennett,C. S. Bennett,Daisuke Suzuki,J. P. Beaulieu,Andrzej Udalski,J. Donatowicz,Valerio Bozza,Valerio Bozza,Fumio Abe,C. S. Botzler,M. Freeman,D. Fukunaga,Akihiko Fukui,Yoshitaka Itow,Naoki Koshimoto,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Yasushi Muraki,S. Namba,Kouji Ohnishi,Nicholas J. Rattenbury,To. Saito,Denis J. Sullivan,Takahiro Sumi,Winston L. Sweatman,Paul J. Tristram,N. Tsurumi,K. Wada,Philip Yock,Michael D. Albrow,Etienne Bachelet,S. Brillant,J. A. R. Caldwell,Arnaud Cassan,Andrew A. Cole,E. Corrales,C. Coutures,S. Dieters,D. Dominis Prester,Pascal Fouqué,J. G. Greenhill,Keith Horne,J.-R. Koo,D. Kubas,J. B. Marquette,R. Martin,J. W. Menzies,Kailash C. Sahu,Joachim Wambsganss,Andrew Williams,M. Zub,J.-Y. Choi,Darren L. DePoy,Subo Dong,B. S. Gaudi,Andrew Gould,Chang S. Han,Calen B. Henderson,D. McGregor,C.-U. Lee,Richard W. Pogge,I.-G. Shin,Jennifer C. Yee,Jennifer C. Yee,Michał K. Szymański,Jan Skowron,Radek Poleski,Radek Poleski,S. Kozllowski,Lukasz Wyrzykowski,M. Kubiak,Paweł Pietrukowicz,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Igor Soszyński,Krzysztof Ulaczyk,Yiannis Tsapras,Yiannis Tsapras,Rachel Street,Martin Dominik,Martin Dominik,D. M. Bramich,P. Browne,M. Hundertmark,N. Kains,Colin Snodgrass,Iain A. Steele,I. Dékány,Oscar A. Gonzalez,D. Heyrovsky,Ryo Kandori,Eamonn Kerins,P. W. Lucas,Dante Minniti,Takahiro Nagayama,Marina Rejkuba,Annie C. Robin,R. Saito +101 more
TL;DR: In this paper, the first microlensing candidate for a free-floating exoplanet-exomoon system, MOA-2011-BLG-262, with a primary lens mass of M host ~ 4 Jupiter masses hosting a sub-Earth mass moon was presented.
Journal ArticleDOI
The Second Multiple-planet System Discovered by Microlensing: OGLE-2012-BLG-0026Lb, c—A Pair of Jovian Planets beyond the Snow Line
C. Han,Andrzej Udalski,J.-Y. Choi,Jennifer C. Yee,Andrew Gould,G. W. Christie,Thiam-Guan Tan,Michał K. Szymański,M. Kubiak,Igor Soszyński,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Radosław Poleski,Krzysztof Ulaczyk,P. Pietrukowicz,S. Kozlowski,Jan Skowron,Łukasz Wyrzykowski,Łukasz Wyrzykowski,Leonardo A. Almeida,V. Batista,Darren L. DePoy,Subo Dong,Jack D. Drummond,B. S. Gaudi,K.-H. Hwang,Francisco Jablonski,Youn Kil Jung,C.-U. Lee,J.-R. Koo,Jennie McCormick,L. A. G. Monard,Tim Natusch,H. Ngan,H. Park,R. W. Pogge,I. Porritt,In-Gu Shin +37 more
TL;DR: In this article, the authors reported the discovery of a planetary system from observation of the high-magnification microlensing event OGLE-2012-BLG-0026.
Journal ArticleDOI
The second multiple-planet system discovered by microlensing: OGLE-2012-BLG-0026Lb, c, a pair of jovian planets beyond the snow line
C. Han,Andrzej Udalski,J.-Y. Choi,Jennifer C. Yee,Andrew Gould,G. W. Christie,Thiam-Guan Tan,Michał K. Szymański,M. Kubiak,Igor Soszyński,Grzegorz Pietrzyński,Radosław Poleski,K. Ulaczyk,P. Pietrukowicz,S. Kozlowski,Jan Skowron,Łukasz Wyrzykowski,Leonardo A. Almeida,V. Batista,Darren L. DePoy,Subo Dong,Jack D. Drummond,B. S. Gaudi,K.-H. Hwang,Francisco Jablonski,Y. K. Jung,C.-U. Lee,J.-R. Koo,Jennie McCormick,L. A. G. Monard,Tim Natusch,H. Ngan,Hyungmin Park,R. W. Pogge,I. Porritt,In-Gu Shin +35 more
TL;DR: In this paper, the authors reported the discovery of a planetary system from observation of the high-magnification microlensing event OGLE-2012-BLG-0026.
Journal ArticleDOI
Microlensing discovery of a tight, low-mass-ratio planetary-mass object around an old field brown dwarf
Chang S. Han,Youn Kil Jung,Andrzej Udalski,Takahiro Sumi,B. S. Gaudi,Andrew Gould,David P. Bennett,Yiannis Tsapras,Yiannis Tsapras,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Igor Soszyński,Jan Skowron,Szymon Kozłowski,Radosław Poleski,Radosław Poleski,Krzysztof Ulaczyk,Łukasz Wyrzykowski,Łukasz Wyrzykowski,Paweł Pietrukowicz,Fumio Abe,Ian A. Bond,C. S. Botzler,P. Chote,M. Freeman,Akihiko Fukui,K. Furusawa,P. Harris,Yoshitaka Itow,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Yasushi Muraki,Kouji Ohnishi,Nicholas J. Rattenbury,To. Saito,Denis J. Sullivan,Winston L. Sweatman,Daisuke Suzuki,Paul J. Tristram,K. Wada,Philip Yock,V. Batista,G. W. Christie,J.-Y. Choi,Darren L. DePoy,Subo Dong,K. H. Hwang,A. Kavka,C.-U. Lee,L. A. G. Monard,Tim Natusch,H. Ngan,H. Park,Richard W. Pogge,I. Porritt,In-Gu Shin,Thiam-Guan Tan,Jennifer C. Yee,Khalid Al-Subai,Valerio Bozza,D. M. Bramich,P. Browne,Martin Dominik,Keith Horne,M. Hundertmark,Sergei I. Ipatov,N. Kains,C. Liebig,Colin Snodgrass,Iain A. Steele,Rachel Street +73 more
TL;DR: The OGLE-2012-BLG-0358Lb system as discussed by the authors is a relatively tightly separated binary composed of a planetary-mass object with 1.9 ± 0.2 Jupiter masses orbiting a BD with a mass 0.022 M ☉.