K
Kyu-Ha Hwang
Researcher at Korea Astronomy and Space Science Institute
Publications - 126
Citations - 1465
Kyu-Ha Hwang is an academic researcher from Korea Astronomy and Space Science Institute. The author has contributed to research in topics: Gravitational microlensing & Planet. The author has an hindex of 16, co-authored 126 publications receiving 1114 citations. Previous affiliations of Kyu-Ha Hwang include Max Planck Society & Harvard University.
Papers
More filters
Journal ArticleDOI
An Earth-mass Planet in a 1 au Orbit around an Ultracool Dwarf
Yossi Shvartzvald,Jennifer C. Yee,S. Calchi Novati,S. Calchi Novati,Andrew Gould,Andrew Gould,Andrew Gould,C.-U. Lee,C.-U. Lee,C. A. Beichman,G. Bryden,Sean Carey,B. S. Gaudi,Calen B. Henderson,Wei Zhu,Spitzer Team,Michael D. Albrow,Sang-Mok Cha,Sang-Mok Cha,S. J. Chung,S. J. Chung,C. Han,Kyu-Ha Hwang,Y. K. Jung,D.-J. Kim,Hyoun-Woo Kim,Shinyoung Kim,Shinyoung Kim,Yongseok Lee,Yongseok Lee,Byeong-Gon Park,Byeong-Gon Park,Richard W. Pogge,Yoon-Hyun Ryu,I.-G. Shin +34 more
TL;DR: The OGLE-2016-BLG-1195Lb is the smallest known Earth-mass microlensing planet to date as mentioned in this paper at 3.91^(+0.42)_(-0.46) kpc.
Journal ArticleDOI
OGLE-2017-BLG-1522: A giant planet around a brown dwarf located in the Galactic bulge
Y. K. Jung,Andrzej Udalski,Andrew Gould,Andrew Gould,Andrew Gould,Yoon-Hyun Ryu,Jennifer C. Yee,C. Han,Michael D. Albrow,C.-U. Lee,C.-U. Lee,Shinyoung Kim,Shinyoung Kim,Kyu-Ha Hwang,S. J. Chung,S. J. Chung,In-Gu Shin,Wei Zhu,Sang-Mok Cha,Sang-Mok Cha,D.-J. Kim,Yongseok Lee,Yongseok Lee,Byeong-Gon Park,Byeong-Gon Park,Duk-Hang Lee,H.-W. Kim,Richard W. Pogge,Michał K. Szymański,P. Mróz,Radosław Poleski,Radosław Poleski,Jan Skowron,P. Pietrukowicz,Igor Soszyński,S. Kozlowski,Krzysztof Ulaczyk,Michał Pawlak,Krzysztof A. Rybicki +38 more
TL;DR: In this paper, the discovery of a giant planet in the OGLE-2017-BLG-1522 microlensing event was reported, which was clearly identified by high-cadence survey experiments despite the relatively short event timescale of 7.5 days.
Journal ArticleDOI
OGLE-2015-BLG-1482L: The First Isolated Low-mass Microlens in the Galactic Bulge
S. J. Chung,S. J. Chung,Wei Zhu,Andrzej Udalski,C.-U. Lee,C.-U. Lee,Yoon-Hyun Ryu,Y. K. Jung,In-Gu Shin,Jennifer C. Yee,Kyu-Ha Hwang,Andrew Gould,Andrew Gould,Andrew Gould,Michael D. Albrow,Sang-Mok Cha,Sang-Mok Cha,C. Han,D.-J. Kim,Hyoun-Woo Kim,Seung-Lee Kim,Seung-Lee Kim,Yun Hak Kim,Yun Hak Kim,Yongseok Lee,Yongseok Lee,Byeong-Gon Park,Byeong-Gon Park,Richard W. Pogge,Radosław Poleski,Radosław Poleski,P. Mróz,P. Pietrukowicz,Jan Skowron,Michał K. Szymański,Igor Soszyński,S. Kozlowski,Krzysztof Ulaczyk,Krzysztof Ulaczyk,Michał Pawlak,C. A. Beichman,G. Bryden,S. Calchi Novati,S. Calchi Novati,Sean Carey,Michael Fausnaugh,B. S. Gaudi,Calen B. Henderson,Yossi Shvartzvald,B. Wibking +49 more
TL;DR: In this paper, the authors analyzed OGLE-2015-BLG-1482 simultaneously observed from two ground-based surveys and from Spitzer and found that the degeneracy between the two solutions is severe (Δx^2 = 0.3).
Journal ArticleDOI
Interpretation of a short-term anomaly in the gravitational microlensing event MOA-2012-BLG-486
Kyu-Ha Hwang,J.-Y. Choi,Ian A. Bond,Takahiro Sumi,Chang S. Han,B. S. Gaudi,Andrew Gould,Valerio Bozza,J.-P. Beaulieu,Yiannis Tsapras,Fumio Abe,David P. Bennett,C. S. Botzler,P. Chote,M. Freeman,Akihiko Fukui,D. Fukunaga,P. Harris,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,Winston L. Sweatman,Daisuke Suzuki,Paul J. Tristram,K. Wada,N. Yamai,Philip Yock,Atsunori Yonehara,L. Andrade de Almeida,Darren L. DePoy,Subo Dong,Francisco Jablonski,Youn Kil Jung,A. Kavka,C.-U. Lee,H. Park,Richard W. Pogge,In-Gu Shin,Jennifer C. Yee,Michael D. Albrow,Etienne Bachelet,V. Batista,S. Brillant,John A. R. Caldwell,Arnaud Cassan,Andrew A. Cole,E. Corrales,Ch. Coutures,S. Dieters,D. Dominis Prester,J. Donatowicz,P. Fouqué,J. G. Greenhill,U. G. Jørgensen,S. R. Kane,D. Kubas,J.-B. Marquette,R. Martin,P. J. Meintjes,J. W. Menzies,K. R. Pollard,Andrew Williams,D. Wouters,D. M. Bramich,Martin Dominik,Keith Horne,P. Browne,M. Hundertmark,Sergei I. Ipatov,N. Kains,Colin Snodgrass,Iain A. Steele,Rachel Street +80 more
TL;DR: In this paper, the analysis of the microlensing event MOA-2012-BLG-486 is presented, for which the light curve exhibits a short-lived perturbation.
Journal ArticleDOI
OGLE-2017-BLG-0173Lb: Low-mass-ratio Planet in a “Hollywood” Microlensing Event
Kyu-Ha Hwang,Andrzej Udalski,Yossi Shvartzvald,Yoon-Hyun Ryu,Michael D. Albrow,S. J. Chung,S. J. Chung,Andrew Gould,Andrew Gould,Andrew Gould,C. Han,Y. K. Jung,In-Gu Shin,Jennifer C. Yee,Wei Zhu,Sang-Mok Cha,Sang-Mok Cha,D.-J. Kim,H.-W. Kim,Shinyoung Kim,Shinyoung Kim,C.-U. Lee,C.-U. Lee,Dong-Joo Lee,Yongseok Lee,Yongseok Lee,Byeong-Gon Park,Byeong-Gon Park,R. W. Pogge,Jan Skowron,P. Mróz,Radek Poleski,Radek Poleski,S. Kozlowski,Igor Soszyński,P. Pietrukowicz,Michał K. Szymański,Krzysztof Ulaczyk,Michał Pawlak,G. Bryden,C. A. Beichman,S. Calchi Novati,B. S. Gaudi,Calen B. Henderson,Savannah Jacklin,Matthew T. Penny +45 more
TL;DR: In this paper, the authors present a microlensing planet OGLE-2017-BLG-0173Lb with a mass ratio of 2.5 x 10^(-5) or 6.5 × 10^(5), the lowest or among the lowest known.