S
S. J. Chung
Researcher at Korea University of Science and Technology
Publications - 25
Citations - 572
S. J. Chung is an academic researcher from Korea University of Science and Technology. The author has contributed to research in topics: Gravitational microlensing & Planet. The author has an hindex of 12, co-authored 25 publications receiving 477 citations. Previous affiliations of S. J. Chung include Korea Astronomy and Space Science Institute.
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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
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.
Journal ArticleDOI
OGLE-2016-BLG-1190Lb: The First Spitzer Bulge Planet Lies Near the Planet/Brown-dwarf Boundary
Yoon-Hyun Ryu,Jennifer C. Yee,Andrzej Udalski,Ian A. Bond,Yossi Shvartzvald,Weicheng Zang,Weicheng Zang,R. Figuera Jaimes,R. Figuera Jaimes,U. G. Jørgensen,Wei Zhu,Chelsea X. Huang,Chelsea X. Huang,Y. K. Jung,Michael D. Albrow,S. J. Chung,S. J. Chung,Andrew Gould,Andrew Gould,Andrew Gould,Chang S. Han,Kyu-Ha Hwang,I.-G. Shin,Sang-Mok Cha,Sang-Mok Cha,D.-J. Kim,Hyoun-Woo Kim,Shinyoung Kim,Shinyoung Kim,C.-U. Lee,C.-U. Lee,Dong-Joo Lee,Yongseok Lee,Yongseok Lee,Byeong-Gon Park,Byeong-Gon Park,Richard W. Pogge,S. Calchi Novati,S. Calchi Novati,Sean Carey,Calen B. Henderson,C. A. Beichman,B. S. Gaudi,P. Mróz,Radosław Poleski,Radosław Poleski,Jan Skowron,Michał K. Szymański,Igor Soszyński,S. Kozlowski,P. Pietrukowicz,Krzysztof Ulaczyk,M. Pawlak,Fumio Abe,Yuichiro Asakura,Richard K. Barry,David P. Bennett,A. Bhattacharya,Martin Donachie,Phil Evans,Akihiko Fukui,Yuki Hirao,Yoshitaka Itow,Kohei Kawasaki,Naoki Koshimoto,Man Cheung Alex Li,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Shota Miyazaki,Yasushi Muraki,Masayuki Nagakane,Kouji Ohnishi,Clément Ranc,Nicholas J. Rattenbury,To. Saito,A. Sharan,Denis J. Sullivan,Takahiro Sumi,Daisuke Suzuki,Daisuke Suzuki,Paul J. Tristram,T. Yamada,Atsunori Yonehara,G. Bryden,Steve B. Howell,Savannah Jacklin,Matthew T. Penny,Shude Mao,Shude Mao,Shude Mao,Pascal Fouqué,Tianshu Wang,Rachel Street,Yiannis Tsapras,M. Hundertmark,M. Hundertmark,Etienne Bachelet,Martin Dominik,Z. Li,Simon Cross,Arnaud Cassan,Keith Horne,R. W. Schmidt,Joachim Wambsganss,S. K. Ment,D. Maoz,Colin Snodgrass,Iain A. Steele,Valerio Bozza,Valerio Bozza,Martin Burgdorf,Simona Ciceri,Giuseppe D'Ago,Daniel F. Evans,Tobias C. Hinse,Eamonn Kerins,Rosita Kokotanekova,Rosita Kokotanekova,P. Longa,J. MacKenzie,A. Popovas,Markus Rabus,Sohrab Rahvar,Sedighe Sajadian,Jesper Skottfelt,John Southworth,C. von Essen +127 more
TL;DR: The OGLE-2016-BLG-1190Lb is the first Spitzer microlensing planet in the Galactic bulge/bar, an assignation that can be confirmed by two epochs of high-resolution imaging of the combined source-lens baseline object as discussed by the authors.